Yokomo R12-10LSU lower A arm spring ultra soft for R12 front suspension tuning  [R12-10LSU]

Front lower A-arm ultra soft spring for R12

This is an ultra soft lower A-arm spring designed for front suspension setup on Yokomo R12 and related GT series RC cars. The component is intended as an RC-scale tuning part to alter front-end compliance and feel without modifying other suspension geometry.

Use this spring when you need softer front support for smoother weight transfer and increased mechanical grip on low-traction surfaces. Being an ultra soft option, it reduces initial spring rate at the lower A-arm, which can affect roll onset and steering response; adjust together with ride height and damping for predictable results.

Installation is straightforward on compatible R12/GT lower A-arm assemblies, swap the stock lower A-arm spring for this unit and verify clearance through suspension travel. Check preload and damper settings after fitment to rebalance front-to-rear behaviour.

Compatibility: GT5-R35, GT5-SC430, GT3-REA, GT3-IS350, GT3-B4, GT3-CAX, GT3-BRZ, GT3-AHP, GT-B, GT5-R2, GT5-RS2, YR-R12C3, YR-R12C31.