The 3RACING Damper Cartridge Liners 3RAC-DP03 provide a low-friction internal surface that helps stabilise piston movement and preserves seal condition, giving tuners a cleaner baseline when adjusting valving and oil weight.
These liners are engineered to suit many standard cartridge configurations, allowing racers to reduce internal hysteresis and dial in more predictable damping. Use them as part of a controlled setup routine to evaluate valving changes reliably.
Fitting the liners during scheduled shock rebuilds reduces cumulative wear and helps maintain consistent lap to lap performance. They are an efficient upgrade for teams seeking repeatability without extensive shock remanufacture.