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This is a set of optional Motonica white soft rate rear shock springs, and are intended for use with the Motonica P-81 1/8 on road race chassis. This part is also compatible with the Motonica P8.0R 08 chassis.

Effects of Shock Spring Changes

Shock Spring	Characteristic
Softer	Increased Chassis Roll Increased Traction Better in Bumpy Conditions More Likely to Bottom Out
Stiffer	Decreased Chassis Roll Decreased Traction Increased Responsiveness