Yokomo YOKBMS1260 Front Shock Spring — BMax4 Front Spring 1260 Hard Purple  [YOKBMS1260]

Front shock spring for BMax4

The Yokomo YOKBMS1260 is an RC-scale front shock spring supplied for BMax4 front dampers, offered in a hard purple rate marked 1260. Its purpose is straightforward: provide a stiffer front spring option to adjust roll and pitch balance on 1/10 touring electric models without altering shock bodies or pistons.

Installation is standard for coil-over style shocks — remove the shock cap, compress the shock shaft, slide the spring over the shaft, seat it against the spring retainer and reassemble. Use matching springs on both sides to retain symmetric handling, and check spring seating to avoid binding on the shock shaft.

Tuning notes: a harder front spring like this raises front roll stiffness and reduces dive under braking, which shifts handling toward increased understeer in many setups. Compensate with shock oil, bleed rates, or rear spring adjustments to restore balance. Make incremental changes and test on the same track surface to evaluate effects.