Form Bikefitting Leg Length Shim Kit Speedplay

Leg length shim - Speedplay (kit)

Leg length shims are used to increase the effective leg length on a shorter leg in cases where a cyclist suffers from a leg length discrepancy. Signs of a discrepancy can be:

• overreaching on one side at the bottom of the pedal stroke
• pelvis tilted or rider leaning to one side of the saddle in order to retain connection with the pedals through the bottom of the stroke
• one leg feeling under-extended whilst the other feels just right

Assuming the rider's position is correct, and their legs have been assessed to have a discrepancy, the issues above could be solved with the use of leg length shims. Shimming, with the correct amount of rise, can create a more equal leg extension, stabilise the pelvis and lead to a smoother and more controlled pedal stroke on the shorter side.

In some cases shims can be used to solve a functional leg length difference. This is when a rider has no physical difference in leg length, but shows a marked difference in leg extension when riding. In cases like these it’s always advisable to see a bikefitter first, prior to making assumptions about what is required.

Technical Info

The FORM Speedplay leg length shim provides an easy way to add stack height to Speedplay pedals in the case of a leg length discrepancy. The shims come in 2mm and 3mm variants and can be stacked up to 15mm. The product is made with a non-slip textured surface and is compatible with Speedplay / Wahoo Nano, Zero, Walkable, Aero and Powrlink power pedals. 

Kit Includes: 2mm / 3mm / screws

Note: The screws are not compatible with older V1 & V2 options cleats, please get in touch if you are still using these.