Fox Racing Shox Factory Race Series Float 3 Evol QS Shocks 853-21-249

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Part Number: FXX-853-21-249

$1,599.95

REAR TRACK SHOCKS FLOAT 3 LW FT QSL LW RT EVOL QSL-R LW POL
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Fox Racing Shox Factory Race Series Float 3 Evol QS Shocks 853-21-249

Fox Racing Shox Factory Race Series Float 3 Evol QS Shocks 853-21-249

FXX-853-21-249

Not Yet Reviewed

Part Number: FXX-853-21-249

Estimated Ship Date: Oct 22, 2026

$1,599.95

Estimated Ship Date: Oct 22, 2026 Would you rather pick it up?

Overview

Brand:
Manufacturer's Part Number:
853-21-249
Part Type:
Product Line:
Summit Racing Part Number:
FXX-853-21-249
Powersports Shock Position:
Rear
Powersports Shock Type:
Double-adjustable
Shock Body Material:
Aluminum
Shock Body Finish:
Black
Adjustable Valving:
Yes
Low Speed Compression Adjustable:
Yes
High Speed Compression Adjustable:
No
Rebound Adjustable:
Yes
High Flow Valving:
Yes
Upper Mount:
Eyelet
Lower Mount:
Eyelet
Bushing Material:
Aluminum
Bushing Color:
Black
Internal Design:
Air
Gas Charged:
No
Reservoir Included:
Yes
Coilover Springs Included:
No
Spring Preload Adjustable:
No
Shock Linkage Included:
No
Shock Linkage Bearings Included:
No
Quantity:
Sold as a pair.

Fox Racing Shox Factory Race Series Float 3 Evol QS Shocks

Fox Racing Shox offers Factory Race Series Float 3 Evol QS shocks for a variety of applications, including many Polaris, Lynx, and Ski-Doo snowmobiles from 2015 and up. They are the lightest mountain sled suspension packages available. Ride harder in the backcountry with less fatigue without a compromise of durability. Experience a new sense of control on the snow due to less outboard weight. Fox designed the air-sprung mountain shocks with two primary objectives: weight reduction and ride performance. The shocks are optimized through material reduction without a sacrifice of ride quality or structural integrity. Engineers shaved weight from the reservoir walls and mounting hardware to save weight where it counts. The result is an air shock package in a league of its own.

Fox's position-sensitive damping technology, with origins in desert truck racing, is now applied to the Factory Race Series coil-sprung shocks. Spiral grooves inside the shock allow the oil to flow around the main piston, reducing damping force in the ride zone for a plush feel. The bypass grooves terminate through the final 30 percent of the travel, forcing oil to only flow through the main piston—and providing a significant increase of bottom-out resistance to cushion any hard hits. Fox's QS technology allows you to adjust the compression and rebound damping with ease to suit the snow conditions. Three positions keep the adjustment simple, so you focus on the ride instead of counting clicks. The Float air spring and Evol air chamber have an infinite range of spring adjustment. The air spring enables you to tailor the suspension specifically to your ride style or terrain. When the shock compresses through the travel, the spring force ramps up due to the progressive nature of air springs. If you ride aggressively and want a bottomless feel, the Float 3 Evol QS shock package is for you. Maximize the power-to-weight ratio of your sled by bolting on Fox's new mountain shocks.

Applications

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