YZ-4 Compatible Front Spacer - Yokomo Z4-300FS 1.0m Non-Chamfer  [Z4-300FS]

Tuning impact of a front roll-center spacer

This spacer fits between the YZ-4 front suspension mount and the chassis to alter roll-center placement. It is a purpose-made shim that adjusts the suspension geometry without modifying the mount or chassis attachment points.

Marked as Non-Chamf and noted 1.0m in the listing, the component slips under the front mount to change the pivot height, which affects body roll and the car's initial turn-in behaviour on track.

To fit, place the spacer under the front suspension mount and secure using the stock fasteners. After installation, confirm suspension travel and wheel alignment to ensure proper clearance and even behaviour.

Tuning advice: small roll-center changes influence weight transfer and front grip. Introduce this spacer as a controlled variable while keeping the rest of the setup constant to judge its effect.