Yokomo RP-077 Racing Performer Ultra Shock Spring Progressive 3.0~3.2, progressive touring car damper spring for on-road tuning  [RP-077]

Progressive touring car shock spring

This RP-077 is a progressive shock spring designed for 1/10 on-road touring car dampers. The coil pitch changes along the spring to deliver a combination of initial compliance and increasing stiffness under larger compressions, useful when tuning bump response and mid-to-end travel behavior in damper setups.

The spring is finished in black and the hardness rating is laser engraved on the end for quick identification during setup. It is supplied in a protective plastic case for storage and transport.

Installation is standard for touring car shock springs: fit inside the damper assembly, re-check spring preload and damper travel after replacement, and evaluate changes in handling across lap runs rather than relying on a single measurement.