{"product_id":"len-performance-rear-track-shock-ski-doo-mxz-129-renegade-sport-54-80001r","title":"Len Performance Rear Track Shock, Ski-Doo MXZ 129 2015–2022 \u0026 Renegade Sport 137 (54-80001R)","description":"\u003cp\u003eLen Performance LS4-80001R rebuildable rear track shock for the rear suspension on the 2015–2022 Ski-Doo MXZ 129 (Sport, TNT, Blizzard, X, X-RS, Iron Dog; 600 H.O. \/ 600R \/ 800R \/ 850 E-TEC, 900 ACE, 1200 4-TEC) and the Renegade Sport 137 (600 Carb 2015–2019, 600 ACE 2017–2020 and 2024–2027, 900 ACE \/ 1200 4-TEC 2017). It replaces the factory rear track shock with a reservoir shock that has 5-click compression adjustment. At $392.95 each, it is A2D's value pick for a rebuildable, adjustable reservoir rear track shock: clicker adjustment, a reservoir and a serviceable design without the cost of a race-level shock.\u003c\/p\u003e\u003cp\u003eThe rear track shock sets how the rMotion skid handles big hits, G-outs and bottoming with a passenger or gear on the tunnel. This is a springless unit that works with the factory rear torsion springs, so it drops in without changing the rest of the skid.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment.\u003c\/strong\u003e Sold each. Pairs with the Len Performance 54-80001F front track shock on the MXZ 129 for a complete rear suspension (Len Performance kit LS4-80001K: one LS4-80001F and one LS4-80001R). Matching ski shocks: 54-80001-1LH \/ RH. On the 2024–2027 Renegade Sport 600 ACE 137 this is the only Len Performance shock listed. Platform: Ski-Doo REV-XS (2015–2016; 900 ACE \/ 1200 4-TEC through 2018) and REV Gen4.\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\u003eMXZ:\u003c\/strong\u003e 2016 MXZ 600HO E-TEC Blizzard; 2015-2018 MXZ 600HO E-TEC Iron Dog; 2017 MXZ 600HO E-TEC X; 2016 MXZ 600HO E-TEC X-RS; 2020 MXZ 600R E-TEC; 2019-2020 MXZ 600R E-TEC Iron Dog; 2019-2020 MXZ 600R E-TEC X-RS; 2016 MXZ 800R E-TEC Blizzard; 2015 MXZ 800R E-TEC Iron Dog; 2016-2018 MXZ Blizzard 1200 4-TEC 129; 2016-2018 MXZ Blizzard 600 H.O. E-TEC 129; 2019 MXZ Blizzard 600R E-TEC 129; 2016-2017 MXZ Blizzard 800R E-TEC 129; 2018-2019 MXZ Blizzard 850 E-TEC 129; 2016-2018 MXZ Blizzard 900 ACE 129; 2015-2017 MXZ Sport 600 ACE; 2015-2017 MXZ Sport 600 Carb; 2015-2018 MXZ TNT 1200 4-TEC 129; 2015-2018 MXZ TNT 600 H.O. E-TEC 129; 2019-2020 MXZ TNT 600R E-TEC 129; 2015-2017 MXZ TNT 800R E-TEC; 2018-2020 MXZ TNT 850 E-TEC 129; 2015-2018 MXZ TNT 900 ACE 129; 2015-2018 MXZ X 1200 4-TEC 129; 2015-2018 MXZ X 600 H.O. E-TEC 129; 2018-2022 MXZ X 600R E-TEC 129; 2018 MXZ X 600R E-TEC Iron Dog; 2015-2017 MXZ X 800R E-TEC 129; 2017-2022 MXZ X 850 E-TEC 129; 2015-2016 MXZ X-RS 600 H.O. E-TEC 129; 2019-2020 MXZ X-RS 600R E-TEC 129; 2015-2017 MXZ X-RS 800R E-TEC 129; 2018-2020 MXZ X-RS 850 E-TEC 129; 2017-2018 MXZ X-RS Iron Dog 600 H.O. E-TEC 129\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRenegade:\u003c\/strong\u003e 2017 Renegade Sport 1200 4-TEC 137; 2017-2020, 2024-2027 Renegade Sport 600 ACE 137; 2015-2019 Renegade Sport 600 Carb 137; 2017 Renegade Sport 900 ACE 137\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\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\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\u003e54-80001R (Len Performance LS4-80001R)\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\u003e503194625 (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\u003eRear track 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\u003eSki-Doo REV-XS \/ REV Gen4\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)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength, extended\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e426 mm \/ 16.8 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\u003e277 mm \/ 10.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStroke\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e149 mm \/ 5.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone (uses the factory torsion springs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop eyelet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8.1 mm ID x 19.7 mm wide (0.3 in x 0.8 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\u003e8 mm ID x 19.7 mm wide (0.3 in x 0.8 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.70 lb (8 lb shipping)\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; the Dennis Kirk listing also shows a mounting bracket, 8 mm x 50 mm hex bolt, flat washer and P-clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRebuild kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e54-00003 (Len LSR-00003), per Dennis Kirk\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":50446079983861,"sku":"54-80001R","price":392.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0267\/9029\/files\/len-54-80001R.jpg?v=1790126482","url":"https:\/\/a2dmotorsports.net\/products\/len-performance-rear-track-shock-ski-doo-mxz-129-renegade-sport-54-80001r","provider":"Shop A2D Motorsports ","version":"1.0","type":"link"}