{"product_id":"fox-ski-float-3-evol-qs-lwr-adjustable-shock-ski-doo-summit-part-850-21-268","title":"FOX Ski Float 3 Evol QS LWR Adjustable Shock, Ski-Doo Summit, Part 850-21-268","description":"Completely revamped, the Fox Factory Race Series Float Shocks are the lightest yet!  Offering multiple adjustments, you can easily set the shocks for optiomal comfort in riding zones.  3 different QS styles available, QS3 featuring 3 step adjustment, QSL with rear track shock lockout mode, and QSE available featuring a handlebar mounted switch allowing for locking out the rear track shock on the fly!\n\u003cp\u003eThe FOX Ski Float 3 Evol QS LWR Adjustable Shock is a lightweight, fully rebuildable and revalveable suspension upgrade designed for select Ski-Doo Summit snowmobiles. Part number 850-21-268 features FOX Factory Race Series performance, refined MY26 styling, and multiple adjustment options for tuning ride comfort and handling across changing trail, mountain, and riding conditions.\u003c\/p\u003e\u003cp\u003eThe Float 3 Evol QS platform uses a 60% lighter piston and 20% lighter shaft to reduce unsprung weight while maintaining responsive suspension performance. Its rifle-bore body supports position-sensitive damping, while the double-digressive aluminum piston, high-pitch spring design, and high-volume bearing help deliver controlled movement through varied terrain. Aluminum and injection-polymer mounting hardware, an optimized reservoir length, and newly weight-optimized body caps contribute to the compact, updated design.\u003c\/p\u003e\u003cp\u003eQS3 provides three-position compression adjustment for quick tuning between riding conditions. The QSL configuration adds a rear track shock lockout function on compatible models, allowing the rider to firm the rear suspension when needed. This FOX shock is finished with orange reservoir caps and black Type III anodized bodies for a durable, professional appearance.\u003c\/p\u003e\u003cp\u003eFitment includes 2017 Ski-Doo Summit Burton 800R E-TEC 154-inch, 2017 Summit SP 800R E-TEC 146-inch, 2017 Summit SP 800R E-TEC 154-inch, 2017 Summit X 850 E-TEC 154-inch with 3.0-inch track, 2017 Summit SP 850 E-TEC 154-inch, 2018 Summit SP 850 E-TEC 146-inch and 154-inch, 2018 Summit X 850 E-TEC 154-inch with 3.0-inch track, and 2019 Summit SP and Summit X 850 E-TEC models with 146-inch and 154-inch tracks, as applicable. Verify the exact model and suspension position before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: FOX Factory Race Series\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 850-21-268\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 530-1262\u003c\/li\u003e\n\u003cli\u003eApplication: Select Ski-Doo Summit snowmobiles\u003c\/li\u003e\n\u003cli\u003eAdjustment: QS3 three-position compression adjustment\u003c\/li\u003e\n\u003cli\u003eLockout: QSL rear track shock lockout for select compatible models\u003c\/li\u003e\n\u003cli\u003eConstruction: 60% lighter piston and 20% lighter shaft\u003c\/li\u003e\n\u003cli\u003eDamping: Rifle-bore body with position-sensitive damping\u003c\/li\u003e\n\u003cli\u003ePiston: Double-digressive aluminum piston\u003c\/li\u003e\n\u003cli\u003eSpring: High-pitch spring design\u003c\/li\u003e\n\u003cli\u003eServiceability: Fully rebuildable and revalveable\u003c\/li\u003e\n\u003cli\u003eHardware: Aluminum and injection-polymer mounting hardware\u003c\/li\u003e\n\u003cli\u003eFinish: Orange reservoir caps with black Type III anodized bodies\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2017 Ski-Doo Summit Burton 800R E-TEC 154\"\u003cbr\u003e\n2017 Ski-Doo Summit SP 800R E-TEC 146\"\u003cbr\u003e\n2017 Ski-Doo Summit SP 800R E-TEC 154\"\u003cbr\u003e\n2017 Ski-Doo Summit SP 850 E-TEC 154\"\u003cbr\u003e\n2017 Ski-Doo Summit SP 850 E-TEC 165\"\u003cbr\u003e\n2017 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2017 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2017 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2018 Ski-Doo Summit SP 850 E-TEC 146\"\u003cbr\u003e\n2018 Ski-Doo Summit SP 850 E-TEC 154\"\u003cbr\u003e\n2018 Ski-Doo Summit SP 850 E-TEC 165\"\u003cbr\u003e\n2018 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2018 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2018 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2019 Ski-Doo Summit SP 850 E-TEC 146\"\u003cbr\u003e\n2019 Ski-Doo Summit SP 850 E-TEC 154\"\u003cbr\u003e\n2019 Ski-Doo Summit SP 850 E-TEC 165\"\u003cbr\u003e\n2019 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2019 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2019 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2020 Ski-Doo Summit SP 850 E-TEC 146\"\u003cbr\u003e\n2020 Ski-Doo Summit SP 850 E-TEC 154\"\u003cbr\u003e\n2020 Ski-Doo Summit SP 850 E-TEC 165\"\u003cbr\u003e\n2020 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2020 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2020 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2020 Ski-Doo Summit X 850 with Expert Package E-TEC 154\"\/3.0\"\u003cbr\u003e\n2020 Ski-Doo Summit X 850 with Expert Package E-TEC 165\"\/3.0\"\u003cbr\u003e\n2021 Ski-Doo Summit SP 850 E-TEC 146\"\u003cbr\u003e\n2021 Ski-Doo Summit SP 850 E-TEC 154\"\u003cbr\u003e\n2021 Ski-Doo Summit SP 850 E-TEC 165\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 E-TEC Turbo 154\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 with Expert Package E-TEC 154\"\/3.0\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 with Expert Package E-TEC 165\"\/3.0\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 with Expert Package E-TEC 175\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo 154\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo 165\"\u003cbr\u003e\n2021 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo 175\"\u003cbr\u003e\n2022 Lynx Boondocker 850 E-TEC DS 3900\u003cbr\u003e\n2022 Lynx Boondocker 850 E-TEC DS 4100\u003cbr\u003e\n2022 Ski-Doo Summit SP 850 E-TEC 146\"\u003cbr\u003e\n2022 Ski-Doo Summit SP 850 E-TEC 154\"\u003cbr\u003e\n2022 Ski-Doo Summit SP 850 E-TEC 165\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 E-TEC Turbo 154\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 with Expert Package E-TEC 154\"\/2.5\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 with Expert Package E-TEC 154\"\/3.0\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 with Expert Package E-TEC 165\"\/3.0\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo 154\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo 165\"\u003cbr\u003e\n2022 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo 175\"\u003cbr\u003e\n2023 Lynx Shredder DS-850 E-TEC 154\"\u003cbr\u003e\n2023 Lynx Shredder DS-850 E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2023 Lynx Shredder DS-850 E-TEC Turbo R 165\"\u003cbr\u003e\n2023 Lynx Shredder RE-850 E-TEC Turbo R 154\"\u003cbr\u003e\n2023 Ski-Doo Freeride 850 E-TEC 146\"\u003cbr\u003e\n2023 Ski-Doo Freeride 850 E-TEC 154\" Turbo\u003cbr\u003e\n2023 Ski-Doo Freeride 850 E-TEC 154\"\/2.5\"\u003cbr\u003e\n2023 Ski-Doo Freeride 850 E-TEC 165\"\u003cbr\u003e\n2023 Ski-Doo Freeride 850 E-TEC 165\" Turbo\u003cbr\u003e\n2023 Ski-Doo Freeride 850 E-TEC Turbo R 146\"\u003cbr\u003e\n2023 Ski-Doo Freeride 850 E-TEC Turbo R 154\"\u003cbr\u003e\n2023 Ski-Doo Summit Edge 850 E-TEC 154\" 2.5\u003cbr\u003e\n2023 Ski-Doo Summit Edge 850 E-TEC 165\"\u003cbr\u003e\n2023 Ski-Doo Summit Edge 850 E-TEC 175\"\u003cbr\u003e\n2023 Ski-Doo Summit Neo 600 EFI 146\"\u003cbr\u003e\n2023 Ski-Doo Summit Neo+ 600 EFI 146\"\u003cbr\u003e\n2023 Ski-Doo Summit SP 850 E-TEC 146\"\u003cbr\u003e\n2023 Ski-Doo Summit SP 850 E-TEC 154\"\u003cbr\u003e\n2023 Ski-Doo Summit SP 850 E-TEC 165\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 E-TEC Turbo R 165\"\/3.0\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 with Expert Package E-TEC 154\"\/3.0\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 with Expert Package E-TEC 165\"\/3.0\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165\"\/3.0\"\u003cbr\u003e\n2023 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 175\"\u003cbr\u003e\n2024 Lynx Shredder DS-850 E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2024 Lynx Shredder DS-850 E-TEC Turbo R 165\"\u003cbr\u003e\n2024 Lynx Shredder RE-850 E-TEC 146\"\u003cbr\u003e\n2024 Lynx Shredder RE-850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2024 Lynx Shredder RE-850 E-TEC Turbo R 146\"\u003cbr\u003e\n2024 Lynx Shredder RE-850 E-TEC Turbo R 154\"\u003cbr\u003e\n2024 Ski-Doo Freeride 850 E-TEC 146\"\u003cbr\u003e\n2024 Ski-Doo Freeride 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit Neo 600 EFI 146\"\u003cbr\u003e\n2024 Ski-Doo Summit Neo+ 600 EFI 146\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 E-TEC Turbo R 154\"\/2.5\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 E-TEC Turbo R 165\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 with Expert Package E-TEC 154\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 with Expert Package E-TEC 165\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165\"\/3.0\"\u003cbr\u003e\n2024 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 175\"\u003cbr\u003e\n2025 Lynx Shredder DS-850 E-TEC 154\"\u003cbr\u003e\n2025 Lynx Shredder DS-850 E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2025 Lynx Shredder DS-850 E-TEC Turbo R 165\"\u003cbr\u003e\n2025 Lynx Shredder RE-850 E-TEC 146\"\u003cbr\u003e\n2025 Lynx Shredder RE-850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2025 Lynx Shredder RE-850 E-TEC Turbo R 146\"\u003cbr\u003e\n2025 Lynx Shredder RE-850 E-TEC Turbo R 154\"\u003cbr\u003e\n2025 Ski-Doo Freeride 850 E-TEC 146\"\u003cbr\u003e\n2025 Ski-Doo Freeride 850 E-TEC 154\"\/2.5\"\u003cbr\u003e\n2025 Ski-Doo Freeride 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2025 Ski-Doo Freeride 850 E-TEC 165\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 E-TEC 154\"\/2.5\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 E-TEC Turbo R 165\"\/2.5\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 E-TEC Turbo R 165\"\/3.0\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 with Expert Package E-TEC 154\"\/2.5\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 with Expert Package E-TEC 154\"\/3.0\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 with Expert Package E-TEC 165\"\/2.5\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 with Expert Package E-TEC 165\"\/3.0\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154\"\/2.5\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165\"\/2.5\"\u003cbr\u003e\n2025 Ski-Doo Summit X 850 with Expert Package E-TEC Turbo R 165\"\/3.0\"\u003cbr\u003e\n2026 Lynx Shredder DS-850 E-TEC 154\"\u003cbr\u003e\n2026 Lynx Shredder DS-850 E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2026 Lynx Shredder DS-850 E-TEC Turbo R 165\"\u003cbr\u003e\n2026 Lynx Shredder RE-850 E-TEC 146\"\u003cbr\u003e\n2026 Lynx Shredder RE-850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2026 Lynx Shredder RE-850 E-TEC Turbo R 146\"\u003cbr\u003e\n2026 Lynx Shredder RE-850 E-TEC Turbo R 154\"\u003cbr\u003e\n2026 Ski-Doo Freeride 850 E-TEC 146\"\u003cbr\u003e\n2026 Ski-Doo Freeride 850 E-TEC 154\"\/2.5\"\u003cbr\u003e\n2026 Ski-Doo Freeride 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2026 Ski-Doo Summit X 850 E-TEC 154\"\/2.5\"\u003cbr\u003e\n2026 Ski-Doo Summit X 850 E-TEC 154\"\/3.0\"\u003cbr\u003e\n2026 Ski-Doo Summit X 850 E-TEC 165\"\/2.5\"\u003cbr\u003e\n2026 Ski-Doo Summit X 850 E-TEC 165\"\/3.0\"\u003cbr\u003e\n2026 Ski-Doo Summit X 850 E-TEC Turbo R 154\"\/3.0\"\u003cbr\u003e\n2026 Ski-Doo Summit X 850 E-TEC Turbo R 165\"\/3.0\"","brand":"FOX","offers":[{"title":"Default Title","offer_id":67551852888299,"sku":"530-1262","price":1499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/cfa0-6877d837c6f7c.png?v=1790729396","url":"https:\/\/ctracingservices.com\/products\/fox-ski-float-3-evol-qs-lwr-adjustable-shock-ski-doo-summit-part-850-21-268","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}