Yokomo YOKD170BK Standard Drift Springs 9.5 Coil 1.1mm (2pcs) Black  [YOKD170BK]

Specification and fitment notes

This Yokomo YOKD170BK spring set suits drivers who need predictable suspension response for drifting. Delivered as two black coil springs, the 1.1mm wire and 9.5 coils with regular pitch determine the spring rate and the installed length when used in compatible shock units.

Fit the springs by sliding them over a matching shock shaft or onto a spring retainer, set a measured preload and confirm end-of-travel, then trial the setup by swapping springs one at a time. Coil geometry and pitch will affect how quickly a shock compresses and returns, so these springs influence lateral grip and rebound during slides.

Integrate the springs into a systematic tuning plan alongside shock oil, piston type, and anti-roll adjustments. Make single changes and record observations to verify whether the 1.1 x 9.5 profile improves your chassis balance for drifting.