Yokomo YOKD170BK Drift Tuning Spring Set 1.1 x 9.5 Coils (2pcs) Black  [YOKD170BK]

Spring specs for precise drift tuning

This Yokomo YOKD170BK spring set is an accessory for drivers refining suspension behaviour for drift setups. Supplied as two black coil springs, they are specified at 1.1mm wire and 9.5 coils with a regular pitch, attributes that change spring rate and installed length inside matching shock bodies.

Installation involves sliding the spring over the correct shock shaft or onto the spring retainer, setting preload, and checking travel limits. Compare handling by swapping springs incrementally, since coil count and pitch influence compression and rebound timing.

Use these springs alongside adjustments to shock oil, piston selection, and swaybar rates for a coordinated tuning approach. Make one change at a time and log lap or run notes to judge whether the 1.1 x 9.5 springs give the desired mid-slide and exit behavior.