- For Diamond Drive snowmobiles
- Uses a torsion spring conversion kit in the secondary for optimum performance
- Amazing all-around performance gains
- Wicked acceleration
- Quicker back-shifting
- More efficiently transfers power to the track
- Better belt life
- Holds RPM much better in deep snow conditions
- Adjustable weights to dial in your setup
- Adjustable secondary spring tension for those that like to tune
- Includes torsion conversion kit, helix, secondary spring, primary spring and Goldstar adjustable magnetic weights
- '09 or newer models with electronic engine reverse may have issues going into reverse under heavy load situations. When going into reverse, try to engage the clutch as smoothly as possible.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2010-2011 | Arctic Cat | M6 153in | |
| 2006 | Arctic Cat | M6 Challenger EFI 141in | |
| 2006 | Arctic Cat | M6 Challenger EFI 153in | |
| 2005 | Arctic Cat | M6 EFI 141in | |
| 2007 | Arctic Cat | M6 EFI 141in | |
| 2005 | Arctic Cat | M6 EFI 153in | |
| 2007-2009 | Arctic Cat | M6 EFI 153in | |