The Kyosho 1-E040 is a handy parts pack for hobbyists who service models regularly. It contains 10 E-Rings made to seat in 4mm grooves, providing secure retention for critical shafts and rotating parts.
These E4.0 rings are commonly used on suspension link pins, drive shafts and small gearbox components to prevent slippage and misalignment while running. They are a simple way to keep moving parts behaving correctly.
Align the ring with the groove on the shaft and press it into place. Using small pliers or a dedicated clip tool reduces the chance of damaging the ring or surrounding components. Store a pack with your spares to speed up repairs trackside.
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