Gear Reduction 219 Primary Chain Drive Kit Gold Series kit
Primary gear reduction allows you to run a smaller final drive sprocket reducing reciprocating mass and unsprung weight.
| SUR-RON LB GEAR RATIOS |
| Rear Sprocket | Final Drive Ratio/1 | Standard PCD Overall Ratio/1 | Gear Reduction PCD Overall Ratio/1 |
| 48 | 3.42 | 8.4 | 9.08 |
| 52 | 3.71 | 9.1 | 9.84 |
| 54 | 3.8 | 9.45 | 10.22 |
| 56 | 4.0 | 9.8 | 10.6 |
| 58 | 4.1 | 10.15 | 10.97 |
| 60 | 4.28 | 10.5 | 11.35 |
- One-piece, steel sprockets with improved heat treatment for reduced wear
- KMC 219H chain that is extremely stretch resistant
- Sprockets are improved to provide more adjustment for longer life
- 20% lighter than the stock belt system