With our forearm training device, you can improve grip strength, treat forearm and elbow pain, increase flexibility and durability, and prevent arm pump! 4Arm Strong comes with a 30-day money back guarantee!

  • Great for any athlete who uses their arms
  • Easy to use
  • Fits easily in your gym bag
  • Durable and made to last

At 4ARM STRONG, we wanted to help athletes of all types find a better way to improve forearm flexibility and function, relieve elbow pain, Carpal Tunnel Symptoms, reduce the risk of elbow injuries and also avoid performance killing arm pump. Arm pump happens when too much blood gathers in the forearm, which can cause you to lose grip strength. The 4ARM STRONG is designed to help you enjoy freer, less restrictive movement while you’re training or competing.


  • Weight: 0.65 lbs
  • Dimensions: 8 x 10 x 10 cm
  • Transparent injection-molded thermoplastic polymers
  • Delrin® high-performance acetal resin
  • Lightweight medical grade 6061 aluminum
  • Velcro fastening system.
  • Sizing: Measure your forearm at its widest point

Sizing based on your forearm size in inches:

Less than 11" = SMALL
11"-13" = LARGE

Xtra Lager = For forearms greater than 13" make sure to pick up a LARGE device AND the supplementary XTRA LARGE strap.


Order yours today!

Related Items

Customer Reviews

Based on 56 reviews

Definitely works! Mahalo!

It’s a miracle!

I’d been struggling with arm pump since the age of 14 when I started racing. I’d train in the gym, tons of cardio and ride three times a week but every ride I could only last about 7 minutes. Everyone knows you can’t win in 7 minutes. I’m now 20 an still racing an dealing with tremendous arm pump until I purchased the 4 arm strong device a couple weeks ago. I was able to do 2 25min Motos the first time using it with no arm pump, I only got hand cramps. I use 4 arm strong every day an before rides and I’m looking to make this year the best ever all thanks to 4 arm strong 💪🏾

First ride

First ride at an actual track this season, I used it all the way there (45 min). I was able to do about 3 laps. Used 4arm strong again for about 30 min, relaxed, then went back out and was able to do about 25 min at a pretty good pace. It was still tough to hang on but I had no arm pump. A crazy feeling, I can tell it will be very beneficial.

Get a grip

Grip stength increased. Recovery time decreased. Nuff said!

4ARM Strong Stretching Device

I really can’t say enough good things about this device and stretching techniques! Literally every ride I am blown away with how much better I focus on riding. Honestly I can’t remember the last time I had “arm pump”... I recommend using the 4ARM Strong device and stretching techniques to anyone serious about racing...