Deciding on the best kids golf driver for your junior or teen can be complicated. This article provides some helpful information to make that transition from a kids golf driver to an adult golf driver and provides an overview of some of the best kids golf drivers currently on the market.
If you are looking for irons for juniors that are transitioning from kids golf clubs (e.g. US Kids or Flynn Golf) to adult irons, we recommend this post: "Best Golf Clubs for Juniors Transitioning to Adult Irons".
Since proper fitting of kids golf clubs is very different to fitting adult clubs, we will first provide you with a basic understanding of club fitting factors that go into selecting and fitting a kids golf driver.
If you are in a rush or already know about driver fitting (and why it’s important to junior golf club purchasing), and want to go straight to our recommended list of best junior golf drivers, refer to the quick links in the navigation table below.
Junior golf drivers fall into two main categories:
Golf drivers for younger junior golfers, approx. 6-10 years old, with driver swing speeds of less than ~90 mph.
Golf drivers for junior golfers approx. 9 to 13 years old with driver swing speeds of ~80 to 100 mph that could benefit from adult club technology but still need a lighter weight driver than the standard adult drivers. This is a transitional age between a kids golf driver and true full size adult drivers and therefore we spend most of this post on this age group that is more difficult to fit.
Note that size and strength vary greatly in the 9-13 year old range and you will find some people advocating for 10 year old's to use full size adult drivers. While this is completely up to each individual, unless driver club head speeds are above approx. 85 mph it does not do juniors much good by putting them into an adult driver too early just to try get a few more yards of distance - i.e. instead of focusing on an appropriately weighted driver that will benefit the junior's swing in the long term.
The following are the most important factors to be considered in fitting kids golf clubs including drivers:
Many variables affect the performance of a driver including shaft weight, club head weight, shaft length, total club balance and weight (including shaft, club head and grip), shaft flex, shaft kick point (flex point) etc. This can be extremely technical and very confusing but don’t worry, we’re going to boil it down to the most important factors in choosing the best kids golf driver and getting a reasonably good fit without having a professional fitting.
Since so there are so many factors and they inter-relate to each other as well as the individualism of each players swing, club fitting is as much an art as a science. Below are reliable “rules of thumb” that we can use to simplify the process. Note that we highly recommend professional club fitting for juniors once their driver club head speeds start reaching the mid 90 mph range.
Ultimately the goal is to engineer the driver in a way that will help your junior golfer to swing the club more efficiently so they can deliver the club more quickly to the ball – i.e. generate the most club head speed thus maximizing driving distance from the same swing while also hitting the ball in the center of the club face.
Look for a driver club head that is lighter than the weight found in most regular adult drivers. A lighter weight will contribute to increased club head speed. It will also make it easier for your junior to keep the club on the right swing plane (as opposed to being head heavy) thus helping with desired club head position at impact and more center face strikes.
Shaft length will be determined primarily by your junior’s height. Note that a longer shaft will generate more club head speed but may also lead to more off-center strikes (i.e. not struck in the club head sweet spot) and may also negatively impact the swing plane (a longer club generally leads to a flatter swing plane).
If in doubt always go for a shorter shaft than a longer one. It will help with center face strikes, swing plane and tempo. This is supported by the recent trend on the PGA Tour with top ranked players opting for shorter shafts. Both Jimmy Walker and Rickie Fowler shortened their drivers down to 42 and 43.5 inches (tour average is approx. 45 inches). Rickie Fowler then proceeded to win the Honda Classic with his shorter Cobra driver thanks to increase accuracy and marginal loss of distance.
In general, the heavier the total club weight the more difficult it will be for juniors to get the ball in the air. A graphite shaft should be used where possible to keep the shaft weight down. Average driver shafts for men are approx. 55-60 grams and 45-50 grams for ladies (add 10-15 grams for PGA and LPGA tour players).
The best junior golf drivers have light weight graphite shafts. Cobra’s extensive fitting and research has resulted in their junior driver shafts ranging from 46g to 52g for approximate ages of 8 through 14. Some companies like Callaway and Taylormade offer even lighter shafts of 40 grams and up.
Optimal shaft flex is dependent on both swing speed and tempo.
A slower swing speed benefits from a more flexible shaft. A lightweight junior, senior or ladies flex shaft is often a good option for juniors with swing speeds of less than approx. 85 mph.
A slower tempo also benefits from a more flexible shaft whereas a faster tempo requires a stiffer shaft.
The folks at True Temper shafts have provided some very useful general guidelines for swing speed and tempo in the chart below.
Shaft flex point / kick point is the part of the shaft that bends the most in the downswing and at impact. A shaft with a low kick point bends near the head of the club, resulting in a higher ball flight and is better for slower swing speeds.
The club balance point that is the equilibrium point of the finished club (including the head, shaft and grip). The balance point impacts the swing weight - i.e. how the club “feels” when swung. This is relevant to junior clubs as you don’t want a heavy club head and light shaft and grip which is what happens if an adult driver is simply cut down – not a good idea.
Make sure the grip is a junior size or undersized grip. Once junior’s hands are large enough to use a men’s regular golf glove or ladies large golf glove they can transition into a standard size grip.
A general rule of thumb is the younger the junior the more loft they should have on their driver. As swing speeds get higher juniors can transition into lower loft drivers.
For example, juniors under 4 feet (48 inches) should use a driver with more loft (e.g. 20 degrees). As their swing speed increases, juniors from 4 feet to 5+ feet tall, will transition into drivers with less loft – e.g. starting with 18 degrees and move up to 12 degrees or less.
Note that certain shafts promote a high ball launch and thus can have lower lofts. It is unusual for a junior golfer under the age of approx. 12 to play anything less than approx. 12 degrees of loft.
Many modern drivers including some of the junior specific drivers in our review below have adjustable lofts which are a very convenient as a junior grows and their swing changes. Adjustable lofts, however, do usually result in a slightly heavier club.
Modern technology definitely helps – e.g. with accuracy and distance on off center shots. In recent years some of the major manufacturers have begun making junior specific drivers (e.g. lighter club heads, appropriately matched flex and weight shafts, low kick point, junior grips, adjustable weights etc.) that also use the same technology employed in the high-end drivers used on the PGA and LPGA Tour. We will look at some of these below.
The two junior golf club manufacturers reviewed below are our favorite high-quality golf clubs for youth golfers under the age of approx. 10 years old with driver swing speeds of less than approx. 90 mph. In Part 2 below we touch on other junior golf club sets for this age group that are generally for entry level junior golfers.
Although both U.S.Kids and Flynn Golf make drivers for juniors older than 10 years old, we see many juniors start transitioning into light weight adult drivers around 9 to 11 years old. Very recently we have also seen juniors as young as 6 to 8 years old starting to use adult drivers with lighter weight heads and light weight, flexible shafts.
If you do decide to move a very young junior (e.g. age 6-8) into an adult driver, make sure to have the driver properly fitted and not just chase a few extra yards at the potential downside of negatively affecting your junior's swing.
If your junior is between the ages of 6 and 10 years old then we highly U.S.Kids clubs. U.S.Kids makes two series of club sets and drivers, the Ultralight and the Tour Series.
These are excellent quality clubs and there is a reason they are used by most of the top young kids in the USA. At the kids world championships in Pinehurst NC, the majority of kids 10 years of age and under use U.S.Kids Tour Series clubs.
U.S.Kids has a great fitting system that lets you know exactly what club(s) are best suited for your child. You can buy direct from their website and they have a nice program whereby every 6th club you buy is free. We have tested their fitting system and found it to be a very good guide.
The Ultralight Series is designed for beginner to intermediate players who have played some golf, but need a lighter club to improve club head speed. They are available for junior golfers ranging in height from 39” through 66”, so really for any age child. Their sets are appropriate for both boys golf clubs sets and girls golf club sets.
Ultralight (junior height from 30” to 66”):
At less than $40 new, these are great first driver for kids getting into golf.
The Tour Series is designed for intermediate-to-advanced junior golfers who play competitive golf events and have higher than average swing speeds. The Tour Series is a great bridge that prepares a junior player for adult clubs. They are available for kids ranging in height from 51” through 66”, so for any age child.
Tour Series (junior height from 51” to 66”):
In 2018 U.S.Kids introduced the Tour Series 3 (TS3) that includes new technologies and was optimized using trackman feedback from thousands of data points.
The 3 new models of drivers are (i) for younger kids - V15: 17° Loft / 420cc, (ii) V10: 15° Loft / 440cc and (iii) for older juniors - V5: 13° Loft / 460cc. The V15/V10/V5 denotes the difference in weight compared to the average adult driver - i.e. V15 is approx. 15% lighter, V10 is 10% lighter and V5 is 5% lighter.
Mike Flynn of Flynn Golf produces junior clubs exclusively for younger golfers. Their premade sets are for kids from 48 inches to 66 inches tall. Their customized individual clubs, including drivers, can be made for any age/size youth golfer.
Reviews of these clubs are generally very favorable and they seem to be very comparable to the U.S.Kids Tour Series (reviewed above) with some people preferring the Tour Series and some preferring the VT Max.
The VT Max clubs are highly customizable including selection of colors for shafts, grips etc., something which is sometimes particularly attractive for some younger juniors. If this helps get kids out on the golf course then it might worth it.
The VT Max drivers have a 430cc size head with a 12 degree or 14 degree loft and a head weight of 187 grams. The heads are available in white or black and the custom-built drivers sell for approx. $140. The specs for the shaft and grip are determined by Flynn Golf based on various factors that the customer provides to Flynn Golf on their webform, including: age, weight, height, wrist to floor length, hand size, experience level, swing tempo, average drive distance etc.
One popular option for juniors that are "in between" the younger junior drivers (like the U.S.Kids Tour Series and the VT Max) and light weight adult drivers, is to get an appropriately fitted shaft from Flynn Golf and attach it to one of the lighter weight adult drivers such as those reviewed in this article (see below).
Note – Flynn Golf sells quality light weight UST Mamiya shafts that are compatible with the major OEM drivers listed in this article including most adapter sleeves. The price of shafts including OEM adapter is approx. $60. UST Mamiya shafts including the very popular recoil shafts, can also be purchased on Amazon though you will need to search a little more to find exactly what you are looking for. Check Price of UST Mamiya Shafts on Amazon
The golf drivers reviewed below are recommended high-quality golf drivers for accomplished competitive youth golfers ranging in age from approx. 9 to 13 years old. This is the age when juniors grow out of kid specific golf clubs but are not yet strong enough and have enough swing speed for adult golf clubs. These junior golfers typically will have driver swing speeds of ~80 to 100 mph and they can thus benefit from adult club technology in a lighter weight driver than standard adult drivers.
Note that since kids develop at very different ages this is a general age categorization but juniors can move into heavier drivers much earlier or later depending on their size and strength. Always test any potential new "heavier driver" against your child's current driver before making a change just because you see other juniors with adult drivers. "Moving up" very often does not add much distance and often hurts ball dispersion.
That said, if your junior is ready to transition into slightly heavier drivers, the ones below are great choices.
COBRA has been leading the way in making some of the best junior golf drivers that have all the technology of adult tour level drivers but are lighter and have been expertly fitted with shafts for junior golfers in that range between kids clubs and adult clubs. Knowing that junior golfers grow out of shafts quickly they also have a free shaft upgrade program for your junior driver when you purchase it from their website.
The COBRA junior drivers are designed with a higher loft range and a lighter head weight to help promote a higher launch and more club head speed for junior golfers. The new drivers include movable weights and the MyFly8 Technology allows juniors to manage distance and trajectory as their game develops. COBRA also sells full junior iron set, individual clubs, shafts etc. (including junior one-length irons!) on the COBRA website.
New for 2018 is the COBRA KING F8 Junior Driver. It introduces COBRA's first CNC milled driver face and their new 360° Aero™ Technology bringing you all of COBRA’s best technology in a junior driver. Great junior driver but comes with the higher price of new technology!
The 2017 COBRA KING F7 Junior driver is also a very good option and can be purchased new for approx. $100 less than both the original price and the price of the Junior KING F8 Driver. At less than $200 this is a great junior driver at a decent price.
The COBRA Bio Cell junior drivers from a few years ago are also a great option if you are looking for a really nice quality junior driver for less than $100 with a matched junior shaft. These junior drivers are still popular options for junior golfers younger than approx. 10 years old and we see these drivers in use in junior golf tournaments. These are no longer sold new but can sometimes be found on eBay.
Callaway has been producing junior golf clubs for some time and offers a 7-club youth golf set called the XJ Hot. They have four standard XJ Hot junior golf sets, one designed for ages 5-8 and one for ages 9-12, each in a boy's and a girl's option.
The driver in the 5-8 age set has a 16 degree loft, a 34 inch club length and a total club weight of 303 grams. The driver in the 9-12 age set has a 16 degree loft, 40 inch club length and a total club weight of 318 grams. In our opinion these driver weights are on the heavy side compared to other junior drivers and are actually heavier than even the adult Callaway drivers reviewed below!
Our take on the XJ Hot is that they are decent quality clubs and are an ok option for a beginner junior golfer. At $300 for the set they are an acceptable value. We do not see many of XJ Hot golf club sets being used at the larger regional and national junior tournaments. One downside is that they are not a complete set and therefore for more advanced junior golfers there is too large a gap in distances.
More exciting is that Callaway does produce some far more technologically advanced drivers that are actually lighter weight than the XJ Hot. These very good lightweight Callaway adult drivers are great option for junior golfers with faster swings.
Introduced in 2018, the Callaway Rogue driver comes in 3 models; Standard, Sub Zero, and Draw. The Rogue Standard driver is a good option for juniors and is reviewed here. The Epic driver, introduced in 2017, was (and still is) a fantastic driver - so why a new driver so soon? Thanks to the use of lightweight materials the Standard Rogue is more forgiving than the Epic (by approx. 16%). This will be attractive to many junior golfers. It should be noted that the Epic, Rogue and Rogue Sub Zero are all in use on the PGA Tour.
The Rogue continues the use of the great technology introduced in the Epic, including the jailbreak bars (which are 25% lighter in the Rogue) and VFT (Variable Face Thickness), for a faster ball speed across a wider face. The triaxial carbon crown is now lighter, at under 10 grams. All this contributes to a wider, deeper club face with an MOI that is 8% higher than the Epic and 16% higher than the XR16.
The Rogue driver has the option to adjust loft and lie but does not have movable weights like the Epic. You have the choice of four stock shafts, with the lightest being the fantastic Aldila Quaranta at 40g, an excellent light weight option for juniors.
The Standard Rogue head weighs 200 grams, which together with a 40 gram shaft and 41 gram grip result in a super light weight, forgiving driver at just over 280 grams. Note that the standard rear weight is 5 grams. If you order the club with a shorter shaft there is a good chance that they will equip your junior's driver with the heavier 14 gram weight to maintain the swing weight. Most juniors do not need a heavier weight and most actually prefer the lighter feel/swing weight - so you can easily swap out the weight if you prefer.
The first is the GBB Epic Star Driver. The Epic Star driver utilizes all the latest Callaway technology (Jailbreak Technology, carbon crown, Exo-cage construction, advanced aerodynamics etc.) and delivers "Epic" performance and distance in an ultra-premium lightweight package.
The Epic Star is popular in Japan and Callaway decided to offer it to golfers in the United States looking for a premium, lightweight option. Since it is engineered to enhance speed and power for players with lower swing speeds, it is ideal for juniors who are looking for Tour level performance. However, this also comes at a premium price with the current MSRP of $700! Occasionally these are available at Callaway Pre-Owned at a more reasonable price.
The EPIC Star total club weight is only 286 grams and is paired with a 39 gram Mitsubishi Grand Bassara shaft. Even the tour proven grip (Golf Pride J200) is 25% lighter than standard grips and weighs just 41 grams. Note – for juniors you may need to replace the grip anyway due to smaller hand size. The adjustable perimeter weight is 6 grams lighter than the GBB Epic and the driver does not have the adjustable hosel that is found on the GBB Epic, thus saving even more weight.
The second of our recommended Callaway drivers for juniors golfers is the Big Bertha V Series. This club is not very well known but is a great option for youth golfers. The Big Bertha V Series has a light-headed design that helps get the ball in the air and has adjustable loft and lie options. It has a lightweight composite crown and Callaway’s "Hyper Speed" club face which results in more weight being located lower and deeper in the club head for increased MOI and greater forgiveness.
Paired with the 42 gram standard lightweight shaft results in a club that is significantly lighter than the standard Big Bertha driver and weighs only approx. 290 grams. The V-series is available in a base 9, 10.5 and 13 degree loft.
As stated, this is a lesser known option for juniors but is a great one for your youth golfer to try out. We have seen this driver in use at various regional and national tournaments in the 8 to 10-year-old age groups. For good deals check out the Callaway pre-owed site or check pricing at the Amazon link below.
The third of our recommended Callaway driver options is the Callaway XR 16. The “R-MOTO Face Technology” is 19% thinner than earlier drivers and the body is lighter too, resulting in more ball speed across the face and redistributed weight for more MOI.
When it debuted, the XR 16 driver head was up to 15g lighter than comparative drivers by using lighter 8-1-1 Titanium (that has more aluminum in it to reduce weight) whilst maintaining strength. The 9, 10.5 and 12 degree drivers are adjustable 3 degrees (1 down, 2 up) and there is also a draw setting. The XR-16 pro is a low spin driver option that has a smaller head, lower launch, less forgiving face and not ideal for most juniors younger than 10. You could pair the XR-16 with a ladies, senior flex graphite shaft or Flynn Golf junior shaft for a junior who has higher than average strength and swing speed.
Like Callaway and Taylormade, Ping has developed a series of entry level junior club sets, called the Ping Moxie. The Ping Moxie K is for ages 6-7, the Moxie G is for ages 8-9 and the Moxie i is for ages 10-11. Note that the K-series does not have a driver. The G and i-series both have a driver with 16 degrees of loft. The Ping moxie clubs are suitable for beginner juniors and we have not seen Ping Moxie clubs being used in the highly competitive arena of regional and national junior golf tournaments.
In summer 2018 Ping announced the launch of a new line of juniors clubs designed to fit juniors from 4.5" to 5.2" or approximately ages 7 to 13 years old. The Prodi G junior golf sets have similar technology to Ping's very good adult clubs. What's more is that, if you buy a set of at least 5 clubs, Ping will provide a one-time free fitting to re-shaft, lengthen, re-weight or regrip the set of junior clubs. They have called this the "Get Golf Growing" program.
Ping claims that juniors will see up to 15 yards extra distance off the tee compared to other top-selling junior drivers. The driver is a 460cc titanium driver and has the forgiving technology of Ping's adult drivers. It also has the speed-inducing turbulators on the top of the driver head and comes fitted with a lightweight graphite shaft.
The graphite shaft has 2 options, a kids regular flex and a kids stiffer flex. The standard length is 39.5 inches. The regular flex can be ordered in either 39.5 inches or 37.5 inches. The still flex has 39.5, 41 and 42.5 inch options. The loft is 15 degrees which is suitable for younger juniors.
It is great to see another major equipment manufacturer start to develop a junior specific driver. Priced at $210 we expect this to be a very popular and competitive driver for younger juniors. As of July 2018 this driver was available for pre-order at WorldWide Golf Shops.
Ping has also has developed a junior specific Ping driver that incorporates a lot of the technology of their adult clubs. The Ping G812 is designed for ages 8-12 and kids that are approx. 48” to 60” (4 feet to 5 feet) tall. Ping has incorporated a lightweight 40 gram junior shaft that is counterbalanced to offset the swing weight feel of a shorter shaft.
The loft is 15 degrees, length is 41” and the 460cc club head weighs 195 grams. Add a junior sized 45 gram grip and you get a junior driver that weighs just 280 grams. The Ping G812 has a similar look as the Ping G series adult drivers. This is a good intermediate driver to bridge the gap between a kids golf driver and an adult driver. At a little over $200 new, this is a good deal for a quality club.
The Ping G400 was introduced in late 2017 and is a great driver for juniors as the club head weighs only 206 grams. This is the exact same weight as the Callaway Epic Star and combined with a light weight shaft and junior grip it weighs in at only 286 grams and it costs significantly less than the Epic Star. We have found the Ping G400 for less than $300 on Ebay.
The Ping G400 is packed with the latest technology and has rave reviews. The slightly smaller head looks good at address and is great for juniors where sometimes a full size 460 head looks huge on a junior shaft. The G400 driver is more forgiving than the G drivers they replace even with a smaller head. The new face material is T9S+ titanium which generates more ball speed by being thinner and more flexible. The Ping G400 drivers look, feel and sound great!
The Ping G400 is consistently one the best fits for juniors golfers and we highly recommend including it in your list of drivers to test or buy for juniors.
The Ping G400 Max is the 460cc version of the G400 which is only 445cc in size. The 460cc is more similar in size to the old Ping G drivers. Both drivers have the same adjustable hosel and excellent stock shaft. For most players, the G400 Max will launch the ball slightly higher with more spin as compared to the G400. Both drivers are in use on the PGA Tour although in general, players with higher swing speeds will favor the G400 to keep spin down.
At only 260 grams the 2015 CG Black Driver is one of the lightest full-size drivers on the market. The Cleveland CG Black performed very well in recent fitting tests with a junior. These drivers are priced at less than 1/3 of the cost of these other drivers and they usually comes fitted with a wonderful high launch, light-weight, Mitsubishi Bassara shaft (the shaft alone usually cost about as much as the entire club). We recently found a 12 degree loft, 45 gram Bassara shaft, CG Black on Amazon for $150.
The reason this driver is suited well to juniors is that Cleveland designed it specifically for players with a swing speed of less than approx. 90 mph. The CG Black club head weighs in at just 187 grams, lighter than even the U.S.Kids Tour Series 460cc driver. Note that there is also a CG Black Custom driver that has an adjustable loft. It is slightly heavier than the standard CG Black and designed for slightly higher swing speeds (approx. 90-105 mph).
The matte black color and understated design of these drivers is a good look and they have a great sound at impact.This is a great option for a junior driver if the junior has a swing speed of less than approx. 90 mph and you are looking for a super-lightweight driver that will provide plenty of speed. The Callaway pre-owned site has these for sale at around $100. Our recommendation is to shop both the CPO site and Amazon to find the loft and a light weight shaft.
TaylorMade has also recently started selling an entry level junior set of clubs. The TaylorMade Junior Phenom clubs were introduced by the company in 2016. Both sets include a driver that is suited for beginner junior golfers. The approx. age range for these sets is 5-8 years old (6-piece set) and 9-12 years old (8-piece set). These are appropriately priced for a partial set of entry level clubs. These are fairly similar in concept to the Ping Moxie clubs. We have not seen these clubs in use at any regional or national junior tournaments.
Taylormade previously marketed the 2016 M2 as a junior driver. Interestingly, the 2017 M2 is actually lighter than the 2016 M2 by about 10 grams, so the 2017 M2 is definitely an option worth looking at. The Speed Pocket in the 2017 was redesigned and is three times as flexible as the 2016 M2 and is similar to the AeroBurner below, resulting in more ball speed.
You won't be able to buy this as an "junior M2 driver" but you can have a shaft fitted for your junior. They do also sell them with a ladies flex shaft (marketed as a "ladies M2 driver"). Save $100+ on this driver and get it custom fitted directly from the Taylormade site.
The 2018 M4 driver replaces the 2017 M2. Similar to the 2017 M2, Taylormade do not advertise or sell a junior M4 driver. However, this is a relatively light weight adult club with great distance. It is very forgiving on off center strikes thanks to the twist face technology (that you have no doubt heard about).
The ladies M4 driver comes standard with a very nice Platinum White Tie 45 gram shaft that can be easily customized (see picture below) on the TM site for length, grip size and tipping.
The lighter materials used in this driver allowed TM to increase the rear weight from 18 to 40 grams for better launch and the hammerhead slot also increases the sweet spot. It is lighter weight and a little more forgiving than the M3 driver, but is not as adjustable. It is also less expensive compared to the M3. This is a great driver for slightly older or stronger juniors. If your junior has a higher swing speed and likes drivers with some adjustability then we recommend looking at the M3 driver also.
A good less expensive option to look at is the TaylorMade AeroBurner which is a lightweight, high launch, and very forgiving driver. It is available in both the original white head and now also in black. The club face is slightly less than 200 grams so this driver with a lightweight shaft and junior grips weighs about 280-290 grams. It is slightly heavier than some of the other drivers reviewed in this article but we’ve included it here as we have seen it used very effectively by juniors in the 9-11 year old age range. We have found the Aero Burner Driver with a senior flex shaft on Amazon for $110 with free shipping - a great deal!
Younger juniors (swing speeds of less than approx. 80 mph and ages 9 and under): The U.S.Kids or VT Max (Flynn Golf) driver are specifically made for these juniors and we highly recommend them.
Juniors that are "in between" kids and adult clubs (swing speeds of approx. 80 to 95 mph and ages 8 to 12): Fitting starts to become more important in this age group but not essential, especially at the younger end. If you do buy a driver without fitting make sure to get a light weight club (such as those reviewed above) with a junior shaft (or at least a ladies or senior flex). Use the Flynn Golf shaft ordering if need be or if you know what you are looking for you can usually find a good deal on eBay. You can use the U.S.Kids fitting guidelines to determine the optimal length of the shaft. Be careful not to fall into the trap of being tempted to go too long with the shaft as this can result in your junior forming bad swing habits. In addition, although some drives will certainly be longer with a longer shaft, there will most likely also be more off center strikes resulting in less distance.
Older juniors - swing speeds 95 mph and above: For competitive golfers in this group (generally ages 13 and up), professional fitting is highly recommended for all the reasons set out above.