Serpent 401729 Project 4X Touring Car Service Kit  [SER401729]

Key Replacement Parts for Project 4X

The Serpent 401729 Starter Pack provides a curated selection of spare components intended for Project 4X touring cars. The set helps racers and enthusiasts keep their car race ready with genuine style parts.

Spares for Suspension and Wheel Location

The kit supplies front and rear upper and lower wishbones to maintain correct suspension geometry and stability. Wheel hubs are produced to tight tolerances to reduce runout and ensure dependable wheel mounting.

Colour-Coded Springs to Adjust Balance

Included are four spring variants identified by colour: yellow C4.9, red C6.3, blue C7.6 and green C9.5. Swapping springs lets you dial in roll stiffness and mid corner balance for different surfaces and conditions.

Ball Joints to Preserve Steering Geometry

Also provided are ball joints in 4.5 and 4.5 short lengths to retain accurate steering geometry. Correct ball joint selection helps maintain predictable turn in and tyre life.