Yokomo R12-18FSP Front Shock Spring for R12 front suspension, single-piece spring, for R12 chassis tuning  [R12-18FSP]

Front shock spring for R12

This is an OEM replacement front shock spring designed for 1/12 scale RC use on Yokomo R12-series setups. The part is supplied as a single pcs and is intended purely as an RC-scale accessory for front-end suspension tuning. It helps adjust front roll characteristics and rebound response by changing spring rate or swapping springs to suit track conditions.

Installation is straightforward for anyone familiar with R12-style dampers: remove the shock from the car, disassemble the shock cap and shaft as required, swap the spring onto the shock cup or retainer, and reassemble using the original shock oil and spring preload settings. Keep bearings and seals clean to avoid binding during reassembly.

Tuning role: use this spring to fine-tune front-end balance and turn-in behavior. Pair with appropriate shock oil and preload changes rather than altering multiple variables at once, so you can isolate the spring's effect during setup sessions.