Yokomo YOKCS20000 Super Blend Silicone Shock Oil 20000cSt 30cc for 1/10 RC Dampers  [YOKCS20000]

High-viscosity oil for precise shock tuning

Supplied in a 30cc bottle, this silicone shock oil carries a 20000 viscosity rating and is intended for tuning damper cartridges and shock absorbers on electric or nitro 1/10 scale models. It is a single-component silicone fluid used to alter compression and rebound response in a predictable way when combined with the correct piston and shock geometry.

Perform oil changes using standard shock service technique: detach the shock from the chassis, disassemble the shaft and piston, empty the old oil, inspect internal parts for wear, refill to the selected volume, and bleed air by cycling the shaft before final assembly. Keep notes of fill levels and settings during testing.

Tuning effect: this heavy oil increases damping force and slows both compression and rebound versus lighter grades. Viscosity shifts change how quickly the shock returns after compression and can alter chassis behavior over bumps; adjust progressively and do controlled test laps to dial in handling. Different piston hole sizes and shock designs will produce different outcomes.

Safety and handling: keep the cap on when not in use, store away from heat and strong sunlight, avoid skin contact and prolonged inhalation, and keep out of reach of children. Remove spilled oil from components before resealing to avoid leaks.