This is an RC-scale rear shock spring intended for use on the rear dampers of compatible Yokomo B-MAX43 series chassis. The BM-S12110 carries the SSS 12110 identifier and is supplied as a single replacement spring for rear shock assemblies.
Use this spring when exchanging rear coil inserts during damper maintenance or basic setup changes. It integrates with the existing damper internals and alters spring force contribution within the shock assembly, so expect changes in rear end support and rebound feel after swapping springs.
Installation is a standard spring swap at the rear shock: remove the shock from the car, decompress the spring from the retainer, and replace with the BM-S12110, then reassemble and check ride height and damper travel. Fine-tune suspension by adjusting preload and damping settings to match track conditions.
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