Fits only 2022-Up Pro-R 4 Cylinder Models
Part number: 108-1067
- These will NOT fit the regular Turbo & Ranger P90X models
- 2 washers stacked in the helix allow for less spring bind and smoother shifting
- Less harmonic noise from the spring
- Increases spring rate by 10-15lbs peak on average, this can help eliminate slipping if more spring tension was needed
- See instructions HERE