{"product_id":"muelles-de-contraste-set-de-3-muelles-motoforce-racing-minarelli-start-3-5-blanco-1000rpm-negro-1500rpm-azul-2000rpm","title":"Minarelli clutch springs \/ Start 3\/5 white\/black\/blue Motoforce Racing","description":"\u003cp\u003eFor the perfect adjustment of a \u003cstrong\u003etuned engine\u003c\/strong\u003e, a \u003cstrong\u003estiffer\u003c\/strong\u003e contrast spring is required. \u003cbr\u003eThe contrast spring is located behind the clutch, applying counterpressure to the pulley and therefore to the belt. If the spring is too soft, the belt \u003cstrong\u003eslips\u003c\/strong\u003e and the bike does not accelerate or does not accelerate properly. \u003cbr\u003eKeep in mind that when installing a stiffer spring, you may also need to \u003cstrong\u003echange the variator rollers\u003c\/strong\u003e for heavier or lighter ones. \u003cbr\u003eA great advantage of contrast springs is that each spring has its stiffness marked on the surface.\u003c\/p\u003e\n\u003cp\u003eContrast springs (set of 3) MFR, for 50cc Minarelli \/ CPI scooters and Derbi Start 3\/5 models!\u003c\/p\u003e","brand":"Motoforce Racing","offers":[{"title":"Default Title","offer_id":54304271794561,"sku":"MF84.101","price":25.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/6223\/5959\/files\/mf84.101.jpg?v=1751378487","url":"https:\/\/motoscoot.net\/en\/products\/contrast-springs-set-of-3-springs-motoforce-racing-minarelli-start-3-5-white-1000rpm-black-1500rpm-blue-2000rpm","provider":"Motoscoot","version":"1.0","type":"link"}