Clutch Kit STG2 Torsion Clutch Kits / AC ('12-15)
Transform your Arctic Cat's power delivery and eliminate costly belt failure with the Bikeman Performance Stage 2 Torsion Clutch Kit. Designed specifically for 2012–2015 Arctic Cat Procross and Proclimb models, this kit delivers massive gains in acceleration, higher track speeds, and razor-sharp backshifting while slashing drive belt operating temperatures.
Factory Arctic Cat secondary clutches suffer from severe coil bind, preventing the sheaves from fully shifting into a 1:1 drive ratio and trapping destructive heat. Our Stage 2 package replaces the stock driven setup with a fully adjustable torsion helix and spring system, allowing your clutches to reach complete overdrive while extending belt life dramatically.
Key Performance Features
- Massive Acceleration & Track Speed: Unlocks full shift-out and overdrive for explosive punch off the line and higher top-end speeds.
- Drastic Belt Temperature Reduction: Eliminates heat-soak and belt slippage, saving you from premature belt shredding and high replacement costs.
- Lightning-Quick Backshifting: Superior downshift response when chopping the throttle into sharp turns or deep powder.
- Goldstar Magnetic Adjustable Weights: Features up to 22 grams of adjustment per arm with a unique 4-position magnet system for precise tuning across altitude and power modifications.
- Consistent Peak RPM Hold: Holds target engine RPM under heavy load without power fading.
- Works Stock or Tuned: 1100 Turbo applications perform exceptionally well on stock calibration or high-horsepower ECU tunes.
Recommended Installation Tools & Upgrades
- Primary Clutch Puller: Required for primary clutch removal and servicing.
- Floating Belt Deflection Tool: Lower belt temperatures even further with our deflection adjuster.
- Secondary Spring Tool: Black Diamond Spring Tool (Highly recommended for installing and adjusting the torsion secondary spring safely).
How It Works: Torsion Secondary & Goldstar Weights
Full Overdrive Torsion Conversion: Stock secondary clutches utilize a compression-style spring that coil-binds before reaching full shift. Our kit replaces this with a custom-machined billet adjustable end cap, progressive multi-angle helix, and a torsion-style driven spring. This setup enables complete shift-out and allows you to adjust spring tension for your exact riding style.
BMP Goldstar Adjustable Weights: Our Goldstar primary weights hit hard down low for incredible hole-shots while offering smooth trail cruising. With 4 magnet locations per arm (heel to tip), you can quickly adjust weight distribution to match horsepower upgrades, pipes, big bores, or high-altitude riding.
2-STROKE ENGINE REVERSE NOTICE: 2-stroke models equipped with electronic engine reverse require gentle throttle application when engaging reverse drive. Only engage reverse under light load situations (e.g., backing off a trailer or on flat hard-pack). Harsh engagement or high-load situations can cause the clutch to miss the reverse notch and drop the belt between the sheaves. If reverse usage is critical to your riding, we highly recommend switching to our White Primary Spring (120-310 Rate) to lower engagement RPM.
Vehicle Fitment & Part Numbers
2014–2015 Models:
- 06-13-101: ZR / XF 6000
- 06-13-116: ZR / XF 7000
2012–2015 Models:
- 06-13-102: F / ZR / XF 8000
- 06-13-104: HCR / M 8000
- 06-13-108: F / ZR / XF 1100 (Naturally Aspirated)
- 06-13-109: F / ZR / XF 1100 Turbo
- 06-13-110: M 1100 Turbo
Installation & Video Setup Guide
Setup Documentation: Click here to view/download Arctic Cat Torsion Secondary Setup Instructions.
BMP Stage 2 clutch kits have many benefits over stock. Not only does it produce excellent performance gains, but the belt life is also increased dramatically. The Arctic Cats are known for a short belt life and at almost 200 dollars each that's a hard pill to swallow. The Stage 2 kit fixes that problem and gains big performance in the mean time!
- Huge acceleration and track speed gains
- Some may see top speed gains
- Much better all around clutching performance and "feel"
- Quicker back shifting (down shift)
- More consistent clutching that holds RPM
- Lower clutch temps and longer belt life
- Includes setup guidelines for your model and modifications
- 1100 Turbo clutch kits work with or without tuning
- Easily adjustable for fine-tuning
- Includes our Goldstar magnetic adjustable clutch weights, primary spring, adjustable torsion conversion helix, and a torsion secondary spring.
- Need a primary clutch puller? Click here.
- Lower belt temps further with our floating belt deflection tool.
- We HIGHLY RECOMMEND purchasing this spring tool for installing and adjusting your secondary.
- Fitment:
2014-15:
- 06-13-101 ZR/XF 6000
- 06-13-116 ZR/XF 7000
2012-15:
- 06-13-102 F/ZR/XF 8000
- 06-13-104 HCR/M 8000
- 06-13-108 F/ZR/XF 1100-NON-TURBO
- 06-13-109 F/ZR/XF 1100-TURBO
- 06-13-110 M 1100-TURBO
These kits allow the clutches to go into full overdrive, unlike stock, which doesn't even reach a full one to one ratio! We achieve this by changing the stiff, stock driven spring with a torsion style spring. The stock driven spring actually coil binds which stops the shift. With the torsion spring full shift out is achieved. The torsion spring will also allow you to adjust the driven spring tension for quicker upshift or backshift if you desire, even though we supply recommended specifications with the kits. The helix and adjustable billet end cap is machined from aluminum with our custom cut progressive multi-angles.
The primary clutch utilizes the BMP Goldstar magnetic adjustable weights. These weights hit hard on the bottom end, yet are very smooth for cruising and provide quick throttle response. The weights are adjustable with a unique magnet design allowing up to 22 grams of adjustment per arm. We provide specifications of how to set up the clutch arm weight with each kit. The adjustable weights allow you to precisely fine tune your sled or adjust for modifications and different altitudes. For example, if you add a performance pipe, big bore, or turbo, you can simply add more weight to the Goldstar clutch arms. The 4 positions per side allow you to put more weight towards the heel or tip if you want to change your shift pattern for a harder hit out of the gate or more top end pull. Lastly, we change the primary clutch spring to increase the engagement slightly and help for quicker back shifting.
**2 stroke models with engine reverse may have an issue when engaging reverse drive. You must slowly and easily engage the clutch when in reverse. Only try to use reverse under light load situations like off the trailer, or on flat ground. Harsh engagement or high load situations can cause the clutch to miss the revese notch and drop the belt to the bottom of the sheaves. If reverse is a big concern, you may want to also purchase our white primary spring to lower engagement.**
The Stage 2 clutch kits are simply the best modification for performance and longevity on your Arctic Cat snowmobile. Great performance, cooler clutches, and much longer belt life. This truly is a must have modification!
Click here for the torsion secondary instructions
