The FOX Factory Float 3 QS3 rear track coil shock is a lightweight, fully rebuildable suspension upgrade designed for select 2023 and 2024 Ski-Doo snowmobiles. Featuring FOX Factory Race Series technology, this shock provides refined damping performance, convenient compression adjustment, and improved control across changing trail and backcountry riding conditions. Its QS3 system offers three compression settings, allowing riders to quickly adjust the suspension for comfort, traction, and handling.
Built with a rifle-bore body and position-sensitive damping, the FOX Float 3 QS3 helps deliver controlled suspension response throughout the stroke. A lightweight piston and shaft reduce overall component weight, while the optimized reservoir length, high-volume bearing, double-digressive aluminum piston, and high-pitch spring design support consistent performance. Aluminum and injection-molded polymer mounting hardware further contribute to the weight-optimized design.
The shock features black Type III anodized body components with orange reservoir caps and an updated MY26 styling treatment. It is engineered for the rear track position and is fully rebuildable and revalveable for long-term serviceability and personalized suspension tuning. The FOX manufacturer and vendor part number is 853-21-254.
Fitment: This FOX shock fits 2023 Ski-Doo Freeride 850 E-TEC models with 146-inch or 154-inch tracks, including 2.5-inch configurations; 2023 Ski-Doo Summit SP 850 E-TEC models with 146-inch or 154-inch tracks; 2023 Ski-Doo Summit X 850 E-TEC models with Expert Package or standard configurations and 154-inch, 3.0-inch tracks; 2023 Ski-Doo Freeride 850 E-TEC Turbo R models with 146-inch or 154-inch tracks; and 2024 Ski-Doo Summit X 850 E-TEC models with Expert Package or standard configurations and 154-inch, 3.0-inch tracks. Verify the exact application before installation.
Features:
- Brand: FOX Factory
- Manufacturer part number: 853-21-254
- Vendor part number: 853-21-254
- Model: Float 3 QS3 rear track coil shock
- Application: Rear track suspension for select Ski-Doo snowmobiles
- QS3 adjustment: Three-position compression adjustment
- Damping design: Rifle-bore body with position-sensitive damping
- Weight reduction: Lightweight piston and shaft help reduce overall shock weight
- Construction: Double-digressive aluminum piston, high-pitch spring design, and high-volume bearing
- Mounting hardware: Aluminum and injection-molded polymer components
- Serviceability: Fully rebuildable and revalveable
- Finish: Black Type III anodized body with orange reservoir caps
- Fitment: Select 2023 and 2024 Ski-Doo Freeride and Summit 850 E-TEC models with 146-inch and 154-inch tracks
Fitment:
2023 Ski-Doo Freeride 850 E-TEC 146"
2023 Ski-Doo Freeride 850 E-TEC 154" Turbo
2023 Ski-Doo Freeride 850 E-TEC 154"/2.5"
2023 Ski-Doo Freeride 850 E-TEC 165"
2023 Ski-Doo Freeride 850 E-TEC 165" Turbo
2023 Ski-Doo Freeride 850 E-TEC Turbo R 146"
2023 Ski-Doo Freeride 850 E-TEC Turbo R 154"
2023 Ski-Doo Summit Edge 850 E-TEC 154" 2.5
2023 Ski-Doo Summit Edge 850 E-TEC 165"
2023 Ski-Doo Summit SP 850 E-TEC 146"
2023 Ski-Doo Summit SP 850 E-TEC 154"
2023 Ski-Doo Summit SP 850 E-TEC 165"
2023 Ski-Doo Summit X 850 E-TEC 154"/3.0"
2023 Ski-Doo Summit X 850 E-TEC 165"/2.5"
2023 Ski-Doo Summit X 850 E-TEC 165"/3.0"
2023 Ski-Doo Summit X 850 E-TEC Turbo R 154"/3.0"
2023 Ski-Doo Summit X 850 E-TEC Turbo R 165"/3.0"
2023 Ski-Doo Summit X 850 with Expert Package E-TEC 154"/3.0"
2023 Ski-Doo Summit X 850 with Expert Package E-TEC 165"/3.0"
2023 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154"/3.0"
2023 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165"/3.0"
2023 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 175"
2024 Ski-Doo Freeride 850 E-TEC 146"
2024 Ski-Doo Freeride 850 E-TEC 154"/3.0"
2024 Ski-Doo Summit X 850 E-TEC 154"/3.0"
2024 Ski-Doo Summit X 850 E-TEC 165"/2.5"
2024 Ski-Doo Summit X 850 E-TEC 165"/3.0"
2024 Ski-Doo Summit X 850 E-TEC Turbo R 154"/2.5"
2024 Ski-Doo Summit X 850 E-TEC Turbo R 154"/3.0"
2024 Ski-Doo Summit X 850 E-TEC Turbo R 165"/3.0"
2024 Ski-Doo Summit X 850 with Expert Package E-TEC 154"/3.0"
2024 Ski-Doo Summit X 850 with Expert Package E-TEC 165"/3.0"
2024 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154"/3.0"
2024 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165"/3.0"
2024 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 175"
2025 Ski-Doo Freeride 850 E-TEC 146"
2025 Ski-Doo Freeride 850 E-TEC 154"/2.5"
2025 Ski-Doo Freeride 850 E-TEC 154"/3.0"
2025 Ski-Doo Freeride 850 E-TEC 165"
2025 Ski-Doo Summit X 850 E-TEC 154"/2.5"
2025 Ski-Doo Summit X 850 E-TEC 154"/3.0"
2025 Ski-Doo Summit X 850 E-TEC 165"/2.5"
2025 Ski-Doo Summit X 850 E-TEC 165"/3.0"
2025 Ski-Doo Summit X 850 E-TEC Turbo R 154"/3.0"
2025 Ski-Doo Summit X 850 E-TEC Turbo R 165"/2.5"
2025 Ski-Doo Summit X 850 E-TEC Turbo R 165"/3.0"
2025 Ski-Doo Summit X 850 with Expert Package E-TEC 154"/2.5"
2025 Ski-Doo Summit X 850 with Expert Package E-TEC 154"/3.0"
2025 Ski-Doo Summit X 850 with Expert Package E-TEC 165"/2.5"
2025 Ski-Doo Summit X 850 with Expert Package E-TEC 165"/3.0"
2025 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154"/2.5"
2025 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154"/3.0"
2025 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165"/2.5"
2025 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165"/3.0"
2026 Ski-Doo Freeride 850 E-TEC 146"
2026 Ski-Doo Freeride 850 E-TEC 154"/2.5"
2026 Ski-Doo Freeride 850 E-TEC 154"/3.0"
2026 Ski-Doo Summit X 850 with Expert Package E-TEC 154"/2.5"
2026 Ski-Doo Summit X 850 with Expert Package E-TEC 154"/3.0"
2026 Ski-Doo Summit X 850 with Expert Package E-TEC 165"/3.0"
2026 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154"/3.0"
2026 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165"/3.0"