Leg length shim - universal 3-hole (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 leg length shim provides users with an easy to use, modular shimming system which connects your choice of stack height into one piece. Additionally, the shim system can accommodate the FORM 3-hole wedges, allowing you to build an all-in-one stack of shims and wedges. Features of this product are:

• A curved shape to match the shape of the sole of a cycling shoe
• A chamfered front to facilitate easy clipping in, particularly when shims are stacked
• A “pinning” system to connect multiple shims or FORM wedges together
• Cleat position markers to help with cleat alignment on the shim
• Made from impact resistant nylon to reduce damage due to repeated clip-ins

Kit Includes: 2mm / 3mm / pins / screws