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Review on Grin Technologies Universal REAR Ebike Torque Arm: Robust 1/4 inch Stainless Steel to Safeguard Ebikes from Axle Spinout by Rob Madden

Revainrating 5 out of 5

Good product. Rescuer.

After purchasing three sets of rear hub motors for three different frames. The brake rod solved my problem of axle slippage from cheap rear dropouts on the cheap Walmart bikes I keep buying. Your torsion bars should be included in all motor kits shipped from China, whether the bike needs them or not.

Pros
  • Free for educational purposes
Cons
  • Update availability