Description
Fork springs are the foundation of suspension tuning—get them wrong, and your bike won’t handle predictably regardless of what else you upgrade. The RACE TECH 0.42 kg/mm delivers precise spring rates with shot-peened, heat-treated chrome silicon steel that maintains accuracy within 2%, ensuring consistent performance lap after lap. If you’re building a race bike or dialing in your suspension for track days, this is the spring rate engineered for precision.
- Spring Rate: 0.42 kg/mm
- Material: Chrome silicon steel
- Heat Treatment: Yes
- Shot-Peened: Yes
- Rate Accuracy: ±2%
- High stiffness-to-mass ratio
- MPN: FRSP 454742
- Fitment: Universal fork application
- Installation: Bolt-on replacement









