The FOX Burandt Series 1.5 FLOAT 3 QS3 Front and Rear Shock Kit is engineered for aggressive mountain riding and developed in collaboration with professional snowmobiler Chris Burandt. Part number 853-21-263 includes front and rear track shocks tuned to deliver controlled performance, improved bottom-out resistance, and a more compliant ride across changing terrain. This kit is designed for select Polaris RMK Khaos and RMK Khaos Slash models.
FOX Quick Switch QS3 technology provides three compression-damping settings, allowing riders to adjust shock performance for varying snow conditions, terrain, and riding styles. Position-Sensitive Damping uses spiral-groove bypass technology to provide a plush feel through the initial portion of travel while increasing resistance during the final 30 percent of travel. This helps maintain control during hard landings, technical climbs, and aggressive maneuvers.
FOX Ice Scraper Technology, also known as FIST, helps reduce snow and ice buildup to support consistent shock performance in cold riding conditions. The Burandt Series tuning is intended for riders seeking responsive handling and enhanced suspension control without sacrificing comfort during trail transitions or technical mountain riding. The included front and rear track shocks are supplied as a complete kit for the specified applications.
Fits 2023 Polaris 850 RMK Khaos 155-inch, 2024 Polaris 850 RMK Khaos 155-inch, 2025 Polaris 850 RMK Khaos 155-inch, 2023 Polaris Patriot Boost RMK Khaos Slash 163-inch, 2023 Polaris Patriot Boost RMK Khaos Slash 165-inch, 2024 Polaris Patriot Boost RMK Khaos Slash 165-inch, 2023 Polaris Patriot 9R RMK Khaos Slash 163-inch, 2024 Polaris 650 RMK Khaos Slash 146-inch, 2024 Polaris 850 RMK Khaos Slash 146-inch, and 2024 Polaris 850 RMK Khaos Slash 155-inch snowmobiles. Manufacturer and vendor part number: FOX 853-21-263.
Features:
- Burandt Series tuning developed with professional snowmobiler Chris Burandt for aggressive mountain riding
- FOX 1.5 FLOAT 3 QS3 front and rear shock kit
- Quick Switch QS3 technology provides three compression-damping adjustment settings
- Position-Sensitive Damping delivers a plush initial travel zone and increased bottom-out resistance in the final 30 percent of travel
- FOX Ice Scraper Technology helps minimize snow and ice buildup for consistent cold-weather performance
- Complete kit includes front shocks and front and rear track shocks as specified
- Fits select 2023–2025 Polaris RMK Khaos and RMK Khaos Slash snowmobiles
- Manufacturer and vendor part number: FOX 853-21-263
Fitment:
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"