{"product_id":"sicr-federn","title":"WPS SiCr spring for MTB shock absorber","description":"\u003cp\u003eThe \u003cstrong\u003eWPS SiCr spring\u003c\/strong\u003e is a lightweight steel spring for coil shocks. WPS makes it in Great Britain from silicon-chrome steel – with fine spring rate steps and a tight tolerance for precisely set-up suspension.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSpring rates in 25 lb\/in steps\u003c\/li\u003e\u003cli\u003eSpring rate tolerance ±2%\u003c\/li\u003e\u003cli\u003ePrecision-ground spring ends\u003c\/li\u003e\u003cli\u003eLight yet reliable\u003c\/li\u003e\u003cli\u003eSemi-gloss black coating\u003c\/li\u003e\u003cli\u003eInner diameter 38 mm\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eStroke and spring rates\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003e47.5–65 mm:\u003c\/strong\u003e springs for a maximum stroke of 65 mm, 350 to 800 lb\/in. As they are much shorter than standard springs, they also fit shocks with 47.5 to 55 mm stroke.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003e65–75 mm:\u003c\/strong\u003e springs for a maximum stroke of 75 mm, 275 to 650 lb\/in.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eWhat else you need\u003c\/h3\u003e\u003cp\u003eThe SiCr spring has a 38 mm inner diameter. Depending on your shock, WPS specifies adapters or a spacer from the \u003ca href=\"\/en\/products\/performance-spring-adapters\" title=\"WPS Performance spring adapters and spacers\"\u003eWPS Performance spring adapters\u003c\/a\u003e:\u003c\/p\u003e\u003ctable\u003e\u003cthead\u003e\u003ctr\u003e\u003cth\u003eYour shock\u003c\/th\u003e\u003cth\u003eYou need\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eFOX, Marzocchi\u003c\/td\u003e\u003ctd\u003e2× adapter 38\/35 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eÖhlins, Cane Creek, DVO, X-Fusion\u003c\/td\u003e\u003ctd\u003e2× adapter 38\/36 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eRockShox, EXT, MRP\u003c\/td\u003e\u003ctd\u003e1× spacer 38 mm (recommended)\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eWithout the right adapter the spring has too much play and can damage the spring or the shock. The spacer isn't essential, but it lets the spring rotate with little friction – it works more consistently and responds more sensitively.\u003c\/p\u003e\u003ch3\u003e28 mm extender included\u003c\/h3\u003e\u003cp\u003eThe SiCr spring is shorter than many standard springs. To give you enough preload range, a light 28 mm extender is included. Maximum preload is two turns.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eStroke spacer or bearing in the shock eye?\u003c\/strong\u003e Then the standard extender won't fit over it. Instead you need the three-piece \u003ca href=\"\/en\/products\/spring-extender\" title=\"WPS Spring Extender\"\u003e28 mm split extender\u003c\/a\u003e, for example on a RockShox Super Deluxe Coil with a stroke spacer. A 38 mm spacer comes with the split extender.\u003c\/p\u003e\u003ch3\u003eWhich spring rate do you need?\u003c\/h3\u003e\u003cp\u003eThe right rate depends on rider weight, rear suspension, stroke and the sag you want. Work it out with our \u003ca href=\"\/en\/pages\/mtb-federhaerte-rechner\" title=\"Spring rate calculator\"\u003espring rate calculator\u003c\/a\u003e or ask us.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch4\u003eDoes the WPS SiCr spring fit every shock?\u003c\/h4\u003e\u003cp\u003eMost coil shocks, as long as stroke and spring rate match. With the right WPS adapter or spacer, the spring sits properly on FOX, Marzocchi, RockShox, Öhlins, Cane Creek, DVO and other shocks.\u003c\/p\u003e\u003ch4\u003eWhy two adapters?\u003c\/h4\u003e\u003cp\u003eThe spring sits on a seat at the top and at the bottom. On FOX, Marzocchi, Öhlins, Cane Creek, DVO and X-Fusion the spring seat is smaller than 38 mm, so each end of the spring needs an adapter. Adapter prices are per piece.\u003c\/p\u003e\u003ch4\u003eWhy is the spring so short?\u003c\/h4\u003e\u003cp\u003eSilicon-chrome steel allows a shorter, lighter spring at the same rate. The included 28 mm extender makes up the length so you have enough preload range.\u003c\/p\u003e\u003cp\u003eMore about the brand on the \u003ca href=\"\/en\/collections\/wps\" title=\"WPS brand page\"\u003eWPS brand page\u003c\/a\u003e. Questions about which to choose? \u003ca href=\"\/en\/pages\/contact\" title=\"Write to us\"\u003eWrite to us\u003c\/a\u003e – with the model, year and, if possible, the serial number of your fork or shock.\u003c\/p\u003e","brand":"WPS","offers":[{"title":"47,5–65 mm \/ 350 lbs","offer_id":58816455147894,"sku":"400-12-05","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 375 lbs","offer_id":58816455180662,"sku":"400-12-06","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 400 lbs","offer_id":58816455213430,"sku":"400-12-07","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 425 lbs","offer_id":58816455246198,"sku":"400-12-08","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 450 lbs","offer_id":58816455278966,"sku":"400-12-09","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 475 lbs","offer_id":58816455311734,"sku":"400-12-10","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 500 lbs","offer_id":58816455344502,"sku":"400-12-11","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 525 lbs","offer_id":58816455377270,"sku":"400-12-12","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 550 lbs","offer_id":58816455410038,"sku":"400-12-13","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 575 lbs","offer_id":58816455442806,"sku":"400-12-14","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 600 lbs","offer_id":58816455475574,"sku":"400-12-15","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 650 lbs","offer_id":58816455508342,"sku":"400-12-16","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 700 lbs","offer_id":58816455541110,"sku":"400-12-17","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 750 lbs","offer_id":58816455573878,"sku":"400-12-18","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"47,5–65 mm \/ 800 lbs","offer_id":58816455606646,"sku":"400-12-19","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 275 lbs","offer_id":58816455639414,"sku":"400-13-02","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 300 lbs","offer_id":58816455672182,"sku":"400-13-03","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 325 lbs","offer_id":58816455704950,"sku":"400-13-04","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 350 lbs","offer_id":58816455737718,"sku":"400-13-05","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 375 lbs","offer_id":58816455770486,"sku":"400-13-06","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 400 lbs","offer_id":58816455803254,"sku":"400-13-07","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 425 lbs","offer_id":58816455836022,"sku":"400-13-08","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 450 lbs","offer_id":58816455868790,"sku":"400-13-09","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 475 lbs","offer_id":58816455901558,"sku":"400-13-10","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 500 lbs","offer_id":58816455934326,"sku":"400-13-11","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 525 lbs","offer_id":58816455967094,"sku":"400-13-12","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 550 lbs","offer_id":58816455999862,"sku":"400-13-13","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 575 lbs","offer_id":58816456032630,"sku":"400-13-14","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 600 lbs","offer_id":58816456065398,"sku":"400-13-15","price":139.0,"currency_code":"CHF","in_stock":true},{"title":"65–75 mm \/ 650 lbs","offer_id":58816456098166,"sku":"400-13-16","price":139.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/8089\/9702\/files\/acd7ba_a8b1a4203bc24bbc9fe2b978b1815a44_mv2.jpg?v=1790318051","url":"https:\/\/www.mtb-raceshop.ch\/en\/products\/sicr-federn","provider":"MTB-Raceshop","version":"1.0","type":"link"}