HEAVY-BALL PRO
Introducing the "AccelBooster," an evolved attachment that unleashes the full potential of Accelerators .
Heavy-Ball Pro has developed a "new weapon" to take the training effect of Accelerators to new heights . The goal was to eliminate the boundary between training and actual competition.
Features of the AccelBooster
Heavy-Ball Pro The AccelBooster is the key to acceleration, taking your swing to the next level.
The AccelBooster is not just a weight. It was developed to further deepen the design philosophy of the Accelerator and to push players beyond their limits.
The extra 100g of weight, and the meticulously calculated weight distribution— all of this is designed not simply to increase the load, but to translate the training effect of the Accelerator into "destructive power in actual play." The centrifugal force changes the moment you put it on, and the otherworldly head speed you experience the moment you take it off.
The AccelBooster brings unprecedented sharpness and power to your swing.
Recommended for people like you!
Accel Booster is used by players of various levels and backgrounds.
For those struggling to increase their swing speed
For athletes who feel they've reached their limits with their current training and want to reach a higher level of speed.
For those who don't want to be overpowered in actual combat
For those who want to gain the power to make contact at the moment of impact so they don't get late on fast balls.
For those aiming for efficient power-ups
For those who want to restore the sharpness of their swing by applying intensive, short-term training within a limited practice time.
How to use the AccelBooster
An AccelBooster is not simply a weight to increase the load.
This is a boost tool designed to directly translate the training effects of the Accelerator into "real-world situations," maximizing the quality of your swing.
Specifically, it can be used in the following situations:
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Pursuing the ultimate swing-through sensation, attach the Accelerator and swing a few times. Then, remove the AccelBooster and swing, or switch back to a regular racquet, to train your brain and muscles to remember an unprecedented "head speed" and "acceleration."
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The added 100g of weight enhances the "pushing" power at impact, increasing inertia before and after impact. This helps develop the power to push the ball after striking it, creating a powerful swing that won't be overpowered by heavier balls.
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"Tuning your senses" right before the match: By wearing it and practicing your swing during court changes or pre-match waiting times, you can activate the muscles and nerves necessary for a good swing in a short amount of time. This allows you to play at top gear from the moment you step onto the court.
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On-court gradual load training: During ball-feeding practice, players hit the ball in the order of "with AccelBooster attached → without AccelBooster attached → with a regular racquet," and by checking the difference in feel in each case, they efficiently learn the ideal way to use their body.
Even a short amount of time can make a big difference—that "100g difference." Just adding a few minutes to your daily practice will steadily improve your swing speed and accuracy.
User feedback
"The feeling of acceleration the moment you release the AccelBooster is on a whole other level."
The Accelerator alone was quite effective, but using it in conjunction with the AccelBooster further increased the sharpness of my swing when I switched back to my regular racquet.
- Japan's top junior player
"My reaction to heavy balls has changed."
The added 100g of weight sharpens your concentration at impact.
It's the perfect partner for hitting high-quality egg balls without being overpowered.
- Japan's top veteran player
"It can instantly solve students' problems with their swing."
The feeling of "letting the head move" is difficult to convey in words. Using this AccelBooster, students can grasp that feeling on their own, which has dramatically increased the speed of instruction.
- Coach in charge of strengthening/development
* Accelerators are used in a variety of settings, including by competitive athletes, amateur players, coaches, and academies.
Frequently Asked Questions
Can beginners use it?
Yes, you can use it.
However, if you attach the AccelBooster (100g) to the Accelerator (400g), the total weight will be 500g. First, get used to the Accelerator without the AccelBooster, and once you have confirmed that you can swing with the correct form, start attaching it for short periods of 1-2 minutes.
Can juniors use it too?
Yes, it is available.
However, considering the strain on a growing body, please use it under the supervision of an instructor or guardian. We recommend starting with practice swings and gradually adjusting the frequency of use while checking that no undue strain is being placed on the wrists or elbows.
How much should I use at once?
As a guideline, you can expect to experience significant effects with just 3 to 5 minutes of use per session.
The most effective training method is alternating between high-intensity training that stimulates the senses and then removing the load to recreate those sensations.
Can it be attached to racquets other than the Accelerator?
The AccelBooster is designed to be optimized for the frame shape and weight balance of the Heavy-Ball Pro Accelerator, but it can of course be attached to regular racquets as well. Please use it as an attachment to ensure safe use and maximize your training effectiveness.