Adapt Clutch Weights for the Arctic Cat 858
Regular price $300.00
Unit price per
The Boondocker Adapt Clutch Kit for Arctic Cat 858 is calibrated to provide optimal performance. This kit delivers the best out of the box throttle response, “rippy” feel, powerful midrange acceleration , and highest overall track speeds. This kit utilizes the patented Boondocker Easy-Adjust Adapt weights for best performance.
Summary
For the Arctic Cat snowmobile enthusiast that demands the highest performance, the Adapt Clutch Kit from Boondocker is a configurable and tuneable system that includes the revolutionary Boondocker weights.
- Rippier on the bottom end
- Pulls harder through the mid-range
- Higher overall track speeds
- 30-day love them or we'll take them back guarantee.
Note: We guarantee that you'll love the BoonDocker Adapt weights or well take them back. But used springs, helixes or belts are not returnable or refundable.
We've done the hard work for you, refer to our Weight Chart below for your recommended weight and buy with confidence.
Weight Chart
UPDATED 11-5-2025
| Elev. | Power | Base | Capsules |
|---|---|---|---|
| 0-5,000 | Stock | 62 | 8-10-12 |
| 5-10,000 | Stock | 60 | 8-10-12 |
| 0-5,000 | Muffler/injector relocate | 66 | 8-10-12 |
| 5-10,000 | Muffler/injector relocate | 64 | 8-10-12 |
| 0-5,000 | Turbo | 70 | 8-10-12 |
| 5-10,000 | Turbo | 68 | 8-10-12 |
The chart below is given to you to help decipher what each capsule is.
Kit Configurations:
Base Kit
-This option is appropriate for any rider that wants to wake-up their sled. These kits are available across all the base weights
- Three base weights, figured from the chart above
- Three sets of our weight capsules.
Fit and Compatibility
- 2025+ Arctic Cat 858 ✔
Stats and Specs
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-
- Weight / Capsule Stats & Specs
- Adjustability is focused on fine-tuning based on power level and elevation (ie, the same base weight is not appropriate for different power levels or widely different elevations)
- Adjustable / Tuneable while weights are installed in your sled
- Preferred weight of factory race teams and industry professionals
- Machined, stainless steel construction
- Precisely machined capsules thread in easily and securely
- Hardened for durability and longevity
- Replaceable fiber bushings are pre-installed
- Weight / Capsule Stats & Specs
-
Frequently Asked Questions
What is the optimal RPM range for my sled?
Target RPM for the Arctic Cat 858 is Between 8200-8400 RPM's
How long does it take to install?
- Base Clutch Kit: 15 minutes
Can BoonDocker install this product?
Where are the installation instructions?
The installation instructions are provided below. Please click on the image to download the PDF. We suggest you browse the instructions before you determine if you want to install this product yourself or if you want a dealer to install.
How do I need to configure my adjustable weights?
Please refer to the user manual, which is outlined in the first few pages of the installation instructions (posted below).
Can I install this product myself?
This product is easy to install. A mechanically inclined person can easily tackle this project. We suggest that you look at the instructions and determine if you need assistance from one of our dealers.
Are any specialty tools required?
See Below:
- Base Clutch Kit: Simple hand tools only. A primary clutch compression tool is helpful, though
- Premium Clutch Kit: As above plus a secondary compression tool is REQUIRED
Is the Kit complete
The BoonDocker Adapt Clutch Kit is complete, with everything you need to increase the performance and fun-factor of your snowmobile.
Instructions
**Instructions are coming soon**
(click image for instructions)
MADE IN THE USA
Hand crafted products built in Idaho