3RACING 3RAC-SW12 Racing Shim Spacer Kit 12mm 0.1/0.2/0.3mm  [3RAC-SW12]

3RACING 12mm Shim Spacer 0.1/0.2/0.3m Thickness 10pcs Each - 3RAC-SW12
Price:
USD$3.80
Brand:
3Racing
Model:
3RAC-SW12
Condition:
Brand New
Write a review

Race-Grade Shim Selection for Tuning

The 3RACING 3RAC-SW12 12mm shim kit provides concise thickness steps for racers who need repeatable adjustments to suspension and drivetrain geometry. The 0.1mm, 0.2mm and 0.3mm options allow you to tune end float and gear engagement with minimal disruption to setup balance.

Setup-Focused Applications

Use these shims to correct axle play, set bearing preload or refine pinion-spur clearance. The controlled increments are useful during incremental setup sessions where predictable outcomes matter.

Practical Pack for Track Tuning

Supplying 10 pieces per thickness gives enough quantity for iterative testing and spares during race weekends. Keep a set in the pit for quick mesh checks and last-minute clearances.

How do I use shims to set pinion to spur mesh?

Fit a thin shim on the bearing face or gearbox spacer to move the pinion slightly; test rotation under load and increase shim thickness in small steps until noise and play are minimised.

Are specific shim thicknesses recommended for front or rear adjustments?

There is no universal rule; experiment with 0.1mm steps for steering or diff preload and use larger steps where greater correction is required. Document changes for repeatability.

How do I verify a shim change improved performance?

Compare lap times, steering feel and drivetrain noise before and after the change. Revert if handling worsens and proceed with smaller increments.