Yokomo YOKD171BL Soft Blue 1.1 x 10.5 Progressive Drift Springs, 2pcs  [YOKD171BL]

Precision progressive springs for drift setups

This pair of progressive drift springs from Yokomo, model YOKD171BL, is made for 1/10-scale drift RC cars and provides fine suspension adjustment. The springs are soft blue, wound 1.1 x 10.5 turns with a progressive profile, and are supplied as two pieces for use in drift shock assemblies.

How they work: the effective spring rate increases as compression grows, offering a gentle initial response that firms up under heavier loads to help control weight transfer and lateral traction when sliding. Use them to shift balance between front and rear, tweak throttle-on versus throttle-off behaviour, and influence how quickly the car recovers after a drift entry.

Fitment guidance: check shock shaft diameter and spring cup clearance before assembly, use appropriate collars or preload adjusters when compressing the springs, and do not force springs onto undersized shafts. Make incremental changes and evaluate one end of the car at a time to judge handling differences.

Tuning advice: make small setup steps in spring placement or preload, match springs with stable damping and tyre selection, and log changes so you can return to a reliable baseline. These springs are designed for RC drift practice and competition use only.