Upgrade your snowmobile suspension with the FOX Factory Float 3 QS3 front and rear shock package, manufacturer part number 853-21-256. Designed for select Polaris Matryx and Patriot Boost RMK models, this FOX shock system combines reduced weight, position-sensitive damping, and practical compression adjustment for improved control across changing riding conditions. The QS3 system provides three compression settings, allowing riders to quickly tune the suspension for comfort, trail performance, or more aggressive terrain.
These Float Series shocks feature FOX Rifle-Bore bodies, a double-digressive aluminum piston, a high-pitch spring design, and high-volume bearings for consistent suspension performance. Aluminum and injection-molded polymer mounting hardware help reduce overall weight, while optimized reservoir lengths and weight-optimized body caps provide a compact, refined design. The black Type III anodized bodies and orange reservoir caps deliver the distinctive FOX Factory appearance.
The package includes QS3-equipped shocks, with QSL rear-track lockout functionality available on applicable configurations. The shocks are fully rebuildable and revalveable, supporting long-term serviceability and allowing suspension tuning as riding needs change. This FOX Factory system is designed as a direct-fit suspension upgrade for the listed Polaris snowmobiles and is intended for riders seeking adjustable performance without sacrificing durability.
Fitment: Fits 2022 Polaris 850 RMK Khaos Matryx Slash 165 with 2.75-inch track, 2022 Polaris 850 RMK Khaos Matryx 155-inch, 2022 Polaris 850 RMK Khaos Matryx Slash 146-inch, 2022 Polaris 850 RMK Khaos Matryx Slash 155-inch, 2022 Polaris 850 RMK Khaos Matryx Slash 163 with 3-inch track, 2023–2025 Polaris 850 RMK Khaos 155-inch, and 2023 Polaris Patriot Boost RMK Khaos Slash 163-inch and 165-inch models. Verify exact vehicle configuration before installation.
Features:
- Brand: FOX Factory
- Manufacturer part number: 853-21-256
- Vendor part number: 530-1269
- Model: Float 3 QS3 with Float 3 Evol QSL configuration
- Application: Select Polaris Matryx and Patriot Boost RMK snowmobiles
- Adjustment: QS3 three-position compression adjustment
- Lockout: QSL rear-track lockout on applicable models
- Damping: Rifle-Bore bodies with position-sensitive damping
- Piston: Double-digressive aluminum piston
- Construction: Aluminum and injection-molded polymer mounting hardware
- Serviceability: Fully rebuildable and revalveable
- Finish: Black Type III anodized bodies with orange reservoir caps
- Fitment: 2022–2025 Polaris 850 RMK Khaos and 2023 Polaris Patriot Boost RMK Khaos Slash models
Fitment:
2022 Polaris 850 RMK Khaos Matryx 155"
2022 Polaris 850 RMK Khaos Matryx Slash 146"
2022 Polaris 850 RMK Khaos Matryx Slash 155"
2022 Polaris 850 RMK Khaos Matryx Slash 163 3"
2022 Polaris 850 RMK Khaos Matryx Slash 165 2.75"
2023 Polaris 850 RMK Khaos 155"
2023 Polaris 850 RMK Khaos Slash 163.3"
2023 Polaris Patriot 9R RMK Khaos Slash 155"
2023 Polaris Patriot 9R RMK Khaos Slash 163"
2023 Polaris Patriot 9R RMK Khaos Slash 165"
2023 Polaris Patriot Boost RMK Khaos Slash 163"
2023 Polaris Patriot Boost RMK Khaos Slash 165"
2024 Polaris 650 RMK Khaos Slash 146"
2024 Polaris 850 RMK Khaos 155"
2024 Polaris 850 RMK Khaos Slash 146"
2024 Polaris 850 RMK Khaos Slash 155"
2024 Polaris 850 RMK Khaos Slash 165"
2024 Polaris Patriot 9R RMK Khaos Slash 146"
2024 Polaris Patriot 9R RMK Khaos Slash 155"
2024 Polaris Patriot 9R RMK Khaos Slash 165"
2024 Polaris Patriot Boost RMK Khaos Slash 155"
2024 Polaris Patriot Boost RMK Khaos Slash 165"
2025 Polaris 850 RMK Khaos 155"
2025 Polaris 850 RMK Khaos Slash 155"
2025 Polaris 850 RMK Khaos Slash 165"
2025 Polaris Patriot Boost RMK Khaos Slash 155"
2026 Polaris 850 RMK Khaos 155"