Serpent 500914 Rear 13mm Shock Spring rr Pink 2.1lbs  [SER500914]

Rear shock spring overview

The Serpent 500914 is a rear shock spring designed for RC-scale suspension tuning, sized at 13mm with a 2.1lbs spring rate and finished in pink. This dedicated rear (rr) spring is used to change ride height, initial stiffness, and weight transfer behavior in small-scale RC cars.

Compatibility guidance: this spring fits applications that require a 13mm diameter coil spring for rear shock assemblies. Do not assume fitment with proprietary retainers or unusual shock designs without checking physical dimensions; confirm inner diameter and seat type on your shocks before installation.

Installation notes: remove the shock from the chassis, compress the shock body to relieve preload, and swap springs while noting orientation and the spring seats. Reassemble and set initial preload so the spring engages the shock caps without excessive compression at static ride height. After installation, perform test rolls and adjust preload in small increments to find the balance between traction and roll stiffness.

Tuning role: a 2.1lbs rear spring raises rear roll stiffness compared with softer rates, which can reduce rear squat under acceleration and alter mid-corner balance. Pair spring changes with damper oil viscosity and piston selection to reach the desired damping response rather than relying on spring swaps alone.