{"product_id":"len-performance-front-track-shock-lynx-boondocker-shredder-xterrain-ranger-54-80002f","title":"Len Performance Front Track (Center) Shock, Lynx BoonDocker \/ Shredder \/ Xterrain \/ 49 Ranger 2020–2026 (54-80002F)","description":"\u003cp\u003eLen Performance LS4-80002F rebuildable front track shock, also called the center shock, for the rear suspension on Lynx deep-snow, crossover and utility sleds: BoonDocker 3900 600R (2020–2022) and BoonDocker DS 850 3900 \/ 4100 (2022), Shredder 600R 146 \/ 154 (2023–2025), Shredder DS 3900 and Shredder RE 3700 \/ 3900 850 E-TEC and Turbo R (2023–2026), Xterrain 3700 \/ 3900 and Xterrain 146 (2021–2024) and the 49 Ranger (2020–2025). It replaces the factory front track shock with a coil-over reservoir shock. At $541.95 each, it is A2D's value pick for a rebuildable, adjustable reservoir front track shock: clicker adjustment, a reservoir and a serviceable design without the cost of a race-level shock.\u003c\/p\u003e\u003cp\u003eThe front track shock controls how the skid loads under acceleration, how the front of the track carries weight on sidehills and how much ski pressure you keep when you get on the throttle. This shock has 5-click compression and 5-click rebound adjustment plus threaded preload rings, so it can be set for rider weight and snow conditions instead of running fixed factory valving.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment.\u003c\/strong\u003e Sold each. Lynx only. Pairs with the Len Performance 54-80002R rear track shock for a complete rear suspension (Len Performance kit LS4-80002K). Matching ski shocks: 54-80002 on the 49 Ranger and Xterrain; 54-80000LH \/ RH on the Shredder and BoonDocker DS. Platform: Lynx Radien (BoonDocker, Xterrain, 49 Ranger) and Radien2 (2023 and later Shredder DS \/ RE).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment list\u003c\/strong\u003e (Len Performance year\/model lookup)\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLynx Ranger:\u003c\/strong\u003e 2020-2022 49 Ranger 600 ACE STD; 2020-2022 49 Ranger 600R E-TEC PRO; 2020-2021 49 Ranger 900 ACE; 2021-2022 49 Ranger 900 ACE PRO; 2023-2025 49 Ranger PRO 600R E-TEC; 2024-2025 49 Ranger PRO 850 E-TEC; 2023-2024 49 Ranger ST - 900 ACE Turbo; 2023-2024 49 Ranger ST 900 ACE; 2023-2025 49 Ranger STD 600 ACE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLynx BoonDocker:\u003c\/strong\u003e 2020-2022 Boondocker 3900 600R E-TEC; 2022 Boondocker DS 850 E-TEC 3900; 2022 Boondocker DS 850 E-TEC 4100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLynx Shredder:\u003c\/strong\u003e 2023-2025 Shredder 600R E-TEC 146; 2024-2025 Shredder 600R E-TEC 154; 2023-2026 Shredder DS 3900 850 E-TEC; 2023-2026 Shredder DS 3900 850 E-TEC Turbo R; 2023-2024 Shredder RE 3700 850 E-TEC; 2024 Shredder RE 3700 850 E-TEC Turbo R; 2023-2026 Shredder RE 3900 850 E-TEC; 2023-2026 Shredder RE 3900 850 E-TEC Turbo R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLynx Xterrain:\u003c\/strong\u003e 2021-2024 Xterrain 3700 600 EFI; 2021-2024 Xterrain 3700 600R E-TEC; 2021 Xterrain 3900 600R E-TEC; 2024 Xterrain 600 EFI 146; 2024 Xterrain 600R E-TEC 146; 2022-2023 Xterrain STD 3700 600 EFI; 2022-2023 Xterrain STD 3700 600R E-TEC\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5-click compression adjustment, tool-free.\u003c\/li\u003e\n\u003cli\u003e5-click rebound adjustment.\u003c\/li\u003e\n\u003cli\u003eAluminum reservoir shock: the remote-style reservoir keeps oil temperature down and damping consistent on long pulls.\u003c\/li\u003e\n\u003cli\u003eFully rebuildable, serviceable shock. Len Performance rebuild kits and replacement parts are available.\u003c\/li\u003e\n\u003cli\u003eHardened chromoly shaft for strength and seal life.\u003c\/li\u003e\n\u003cli\u003eForged aluminum eyelet heads with premium steel and NBR bushings.\u003c\/li\u003e\n\u003cli\u003ePowder-coated spring resists corrosion and holds rate in cold, wet conditions.\u003c\/li\u003e\n\u003cli\u003eThreaded shock body with anodized dual-ring locking preload adjusters: set sag once and it stays set.\u003c\/li\u003e\n\u003cli\u003eSold each.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e54-80002F (Len Performance LS4-80002F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOEM part number replaced\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e503196178 (per distributor listings)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShock location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFront track shock \/ center shock (rear suspension)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis \/ platform\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLynx Radien \/ Radien2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdjustments\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompression (5) and rebound (5), plus threaded spring preload\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength, extended\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e351 mm \/ 13.82 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength, compressed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e261 mm \/ 10.28 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStroke\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90 mm \/ 3.54 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePowder-coated coil spring included, 72 mm \/ 2.84 in diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop eyelet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 mm ID x 25.4 mm wide (0.79 in x 1 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBottom eyelet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 mm ID x 25.4 mm wide (0.4 in x 1 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.51 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOne shock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRebuild kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLen Performance rebuild kits available; call to confirm the kit number for this shock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEach\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eOrdering and installation.\u003c\/strong\u003e Sold each. Ships from stock at our Anchorage shop, or from our distributor's Boise, Idaho warehouse when not on the shelf. In-store pickup is available at checkout. Installation and shock setup are available at A2D Motorsports; call (907) 306-3062 to schedule. Len Performance rebuild kits are available, so the shock can be serviced or re-valved rather than replaced.\u003c\/p\u003e","brand":"Len Performance","offers":[{"title":"Default Title","offer_id":50446083719413,"sku":"54-80002F","price":541.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0267\/9029\/files\/len-54-80002F.jpg?v=1790126564","url":"https:\/\/a2dmotorsports.net\/products\/len-performance-front-track-shock-lynx-boondocker-shredder-xterrain-ranger-54-80002f","provider":"Shop A2D Motorsports ","version":"1.0","type":"link"}