QS3 shocks from FOX represent a breakthrough in performance and adjustability. Think of it as three performance shocks in one. Giving you performance akin to the LXR, the Sno Pro, and the RR. How? Set the clicker to number 1. Like the LXR, the ride is smooth, comfortable, confident. Click it up a notch to setting 2, and you’ll straighten out the corners like a Sno Pro. When the competition heats up, click to number 3 and go head to head with an RR. This remarkable shock represents the first time you’ll actively adjust your shocks to suit the riding conditions (without removing your gloves). Top-of-the-line FOX quality is apparent.
Calibrated for mountain performance riding
Fully rebuildable and revalveable
Ultra quick, super simple shock adjustability
A 3-position adjustment knob located on the remote reservoir allows instant compression tuning for riding conditions and/or intensity
Fine tune ride height and plushness with the infinitely adjustable air spring main air chamber
Patented FOX Ice Scraper Technology eliminates moisture from entering the shock by scraping off snow and ice before it ever interfaces with the seals
Center to center extended length is 16.33" (160.78mm)
These shocks come stock on 2019-2023 M Mountain Cat & Alpha One models
Includes two 3703-938/939 shocks, 0641-257 air pump, four 3603-261 8mm eyelet sleeves, eight 3603-260 bushings, four 8437-804 nuts, and 2653-260 instructions
Fits the following models with 36" wide Arctic Mountain Suspension:
2016-2024 M 6000, 7000, 8000, 9000
(Excludes 2024 M 600)
Will also fit all 2012-2024 ZR, F, XF, Riot, & M if they have had Arctic Cat 36" Arctic Mountain Suspension kit installed. Some models require larger 10mm eyelet bushings (Sold separately)
| SKU | 8639-312 |
|---|---|
| Color | Black |
| Prop 65: |

Country Cat is an Arctic Cat, E-Z-GO, Kawasaki, and Textron off Road dealer that opened it's doors in November 1991. We started small and over the years have grown to become one of the largest powersports dealers in the United States. We believe this success has been attributed to living by the motto: "Commitment to Service, Passion for Excellence."





