Yokomo YOKYF14SH Hard Spring for YRF001 Kingpin Suspension  [YOKYF14SH]

Hard spring for kingpin suspension

The Yokomo YOKYF14SH hard spring is an RC-scale replacement spring designed to work with the YRF001 kingpin suspension setup. It serves as a direct tuning option to increase spring rate where a stiffer response is needed without changing shock bodies or pistons.

Fitment and installation are straightforward: compress the spring onto the shock shaft in place of the existing spring, confirm correct seating on the spring perch, and verify preload and travel clearance before running. Use matching springs on left and right corners to keep balance, and pair changes with shock oil or piston adjustments if finer control is required.

Tuning role: choosing this hard-rate option reduces body roll and increases steering response at mid-to-high cornering loads, making it suitable when you want crisper handling on high-grip surfaces or when compensating for softer chassis setups. Observe tire wear and steering feedback after installation to dial in additional settings.