The FOX Factory Race Series Float 3 Evol QS LRW Adjustable Ski Shock is designed for snowmobile riders who want refined suspension performance, broad adjustability, and reduced weight. This model features FOX Position Sensitive Damping with a rifle-bore body, helping deliver controlled suspension response across changing terrain and riding conditions. The Float 3 Evol QS LRW uses FOX’s updated MY26 styling, weight-optimized body caps, and an optimized reservoir design for a compact, performance-focused package.
Built with a double digressive aluminum piston, high-pitch spring design, and high-volume bearing, this FOX shock is engineered to provide consistent operation and improved ride control. The QS3 three-position compression adjustment allows riders to select the preferred setting for different trail and terrain conditions. The LRW configuration also includes a lockout function for the rear track shock on select applications, helping improve control during specific riding situations. Aluminum and injection-molded poly mounting hardware support durable installation and reliable service performance.
The FOX Factory Race Series Float 3 Evol QS LRW Adjustable Ski Shock is fully rebuildable and revalveable, allowing suspension professionals to maintain or customize the shock as riding needs change. Its black Type III anodized body and orange reservoir cap provide a distinctive FOX appearance while supporting long-term durability. The shock fits select Polaris snowmobiles, including the 2012–2013 Polaris 600 Pro-RMK 155-inch, 2016–2018 Polaris 600 Pro-RMK 155-inch, 2018–2019 Polaris 800 SKS 155-inch, 2019 Polaris 850 Pro-RMK 155-inch, and 2019 Polaris 850 SKS 146-inch. Verify the vehicle model, year, track size, and mounting configuration before installation. Manufacturer and vendor part number: FOX 850-21-270.
Features:
- Weight-Optimized Construction: Features a 60% lighter piston and 20% lighter shaft for reduced shock weight.
- Position Sensitive Damping: Rifle-bore body design helps provide controlled damping through changing suspension travel.
- QS3 Compression Adjustment: Three-position compression adjustment supports quick tuning for varied riding conditions.
- LRW Rear Track Lockout: Provides rear track shock lockout capability on select compatible models.
- Performance Piston: Double digressive aluminum piston is designed for responsive and consistent damping.
- Durable Mounting Hardware: Combines aluminum and injection-molded poly mounting components.
- Serviceable Design: Fully rebuildable and revalveable for long-term maintenance and suspension tuning.
- Snowmobile Fitment: Fits select Polaris 600 Pro-RMK, 800 SKS, 850 Pro-RMK, and 850 SKS models with compatible track and mounting configurations.
- Brand and Part Number: FOX Factory Race Series, manufacturer and vendor part number 850-21-270.
Fitment:
2012 Polaris 600 Pro-RMK 155"
2013 Polaris 600 Pro-RMK 155"
2014 Polaris 600 Pro-RMK 155"
2015 Polaris 600 Pro-RMK 155"
2016 Polaris 600 Pro-RMK 155"
2017 Polaris 600 Pro-RMK 155"
2018 Polaris 600 Pro-RMK 155"
2018 Polaris 800 Pro-RMK 155 3"
2018 Polaris 800 Pro-RMK 155"
2018 Polaris 800 Pro-RMK 163 3"
2018 Polaris 800 Pro-RMK 163"
2018 Polaris 800 Pro-RMK 174"
2018 Polaris 800 RMK Assault 155"
2018 Polaris 800 SKS 146"
2018 Polaris 800 SKS 155"
2019 Polaris 600 Pro-RMK 155"
2019 Polaris 800 Pro-RMK 155"
2019 Polaris 800 Pro-RMK 163"
2019 Polaris 800 Pro-RMK 174"
2019 Polaris 800 RMK Assault 155"
2019 Polaris 800 SKS 146"
2019 Polaris 800 SKS 155"
2019 Polaris 850 Pro-RMK 155"
2019 Polaris 850 Pro-RMK 163"
2019 Polaris 850 Pro-RMK 174"
2019 Polaris 850 SKS 146"
2019 Polaris 850 SKS 155"
2021 Polaris 600 Pro-RMK 155"
2021 Polaris 850 Pro-RMK 155 3"
2021 Polaris 850 Pro-RMK 155"
2021 Polaris 850 Pro-RMK 163 3"
2021 Polaris 850 Pro-RMK 163"
2021 Polaris 850 Pro-RMK QD2 155 2.75"
2021 Polaris 850 Pro-RMK QD2 155 3"
2021 Polaris 850 Pro-RMK QD2 163 3"
2021 Polaris 850 Pro-RMK QD2 165 2.75"
2021 Polaris 850 Pro-RMK QD2 174"
2021 Polaris 850 RMK KHAOS 155 3"
2021 Polaris 850 RMK Khaos 155"
2021 Polaris 850 RMK KHAOS QD2 155 2.75"
2021 Polaris 850 RMK KHAOS QD2 155 3"
2021 Polaris 850 RMK KHAOS QD2 163 3"
2021 Polaris 850 RMK KHAOS QD2 165 2.75"
2021 Polaris 850 SKS 146"
2021 Polaris 850 SKS 155"
2022 Polaris 850 Pro-RMK Matryx 155"
2022 Polaris 850 Pro-RMK Matryx Slash 155 2.75"
2022 Polaris 850 Pro-RMK Matryx Slash 155 3"
2022 Polaris 850 Pro-RMK Matryx Slash 163 3"
2022 Polaris 850 Pro-RMK Matryx Slash 165 2.75"
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"
2022 Polaris Patriot Boost Pro-RMK Matryx Slash 163 2.75"
2022 Polaris Patriot Boost Pro-RMK Matryx Slash 165 2.75"
2023 Polaris 650 Pro-RMK 155"
2023 Polaris 850 Pro-RMK 155"
2023 Polaris 850 RMK Khaos 155"
2023 Polaris 850 RMK Khaos Slash 163.3"
2023 Polaris 850 RMK Pro Slash 155"
2023 Polaris 850 RMK Pro Slash 163"
2023 Polaris 850 RMK Pro Slash 165"
2023 Polaris Patriot 9R Pro-RMK Slash 155"
2023 Polaris Patriot 9R Pro-RMK Slash 163.3"
2023 Polaris Patriot 9R Pro-RMK Slash 165"
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"
2023 Polaris Patriot Boost RMK Pro Slash 155"
2023 Polaris Patriot Boost RMK Pro Slash 163"
2024 Polaris 650 Pro-RMK 155"
2024 Polaris 650 RMK Khaos Slash 146"
2024 Polaris 850 Pro-RMK 155"
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 850 RMK Pro Slash 155"
2024 Polaris 850 RMK Pro Slash 165"
2024 Polaris Patriot 9R Pro-RMK Slash 155"
2024 Polaris Patriot 9R Pro-RMK 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"
2024 Polaris Patriot Boost RMK Pro Slash 155"
2024 Polaris Patriot Boost RMK Pro Slash 165"
2025 Polaris 850 Pro-RMK 155"
2025 Polaris 850 RMK Khaos 155"
2025 Polaris 850 RMK Khaos Slash 155"
2025 Polaris 850 RMK Khaos Slash 165"
2025 Polaris 850 RMK Pro Slash 155"
2025 Polaris Patriot Boost RMK Khaos Slash 155"
2026 Polaris 850 Pro-RMK 155"
2026 Polaris 850 RMK Khaos 155"