{"product_id":"ohlins-shock-spring-50-n-mm-250-mm-57-mm-00580-09","title":"Öhlins Shock Spring 50 N\/mm \/ 250 mm \/ Ø 57 mm – 00580-09","description":"\u003cp\u003eÖhlins part number 00580-09 is a shock absorber spring rated at 50 N\/mm, 250 mm long with a 57 mm inner diameter. Adding a pillion or luggage changes the load enough that the standard rate stops working.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePowder-coated yellow\u003c\/li\u003e\n\u003cli\u003e134 mm of usable stroke\u003c\/li\u003e\n\u003cli\u003eInner diameter 57 mm\u003c\/li\u003e\n\u003cli\u003eMeasured spring rate 50 N\/mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00580-09\u003c\/li\u003e\n\u003cli\u003eFree length 250 mm\u003c\/li\u003e\n\u003cli\u003eStraight-wound, constant rate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy the Rate Holds\u003c\/h2\u003e\u003cp\u003eÖhlins manufactures in Upplands Väsby, north of Stockholm, and assembles and tests every unit there before it ships. Öhlins machines its own critical components instead of buying them in, and the tolerances are where the money goes. Rates are offered in defined steps, so a change can be made in one direction at a time.\u003c\/p\u003e\u003ch2\u003eDimensions\u003c\/h2\u003e\u003cp\u003eDimensionally this is a 57 mm × 250 mm spring; within that envelope Öhlins offers a range of rates, and this one is 50 N\/mm.\u003c\/p\u003e\u003ch2\u003eChoosing 50 N\/mm\u003c\/h2\u003e\u003cp\u003eFrom here it is easy to move one step in either direction once you have ridden it. A mid rate balances support under braking against compliance over the surface, which is why it is the usual starting point. Rates here suit a solo rider of typical weight on a road-going machine. Ride quality on the road is decided by rate first and damping second.\u003c\/p\u003e\u003ch2\u003eRate and the Linkage\u003c\/h2\u003e\u003cp\u003eOn a linkage-equipped machine the wheel moves several millimetres for every millimetre the damper moves, and the spring rate has to account for that ratio. Rear spring rates run in the tens or hundreds of N\/mm because the spring sits at the short end of that lever, not at the wheel. Preload adjusts sag within a rate; it does not change the rate, and no amount of it will rescue a spring that is wrong.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThis spring is chosen by its dimensions rather than by motorcycle model: check inner diameter, free length and rate against the fork it is going into. Nothing about the installation changes across a rate range: the mounting, the length and the bore stay the same. A workshop will pick this spring from its dimensions and the rider's weight, not from a fitment table.\u003c\/p\u003e\u003ch2\u003eFitting\u003c\/h2\u003e\u003cp\u003eBoth legs are done together, and both take the same rate. Check the free length against the old springs before fitting — a sagged original often measures short. The springs come powder-coated and need no preparation before they go in.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eRoad approval: no separate certificate. The spring changes the rate, not the construction of the fork, and is treated as a service part.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eWe are an authorised Öhlins service centre, so the installation does not have to be your problem: we fit and set up Öhlins components in our own workshop. Ask us when you order and we will include the work.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eBrand:\u003c\/em\u003e Öhlins\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003ePart Number:\u003c\/em\u003e 00580-09\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Rate:\u003c\/em\u003e 50 N\/mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFree Length:\u003c\/em\u003e 250 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 57 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eStroke:\u003c\/em\u003e 134 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eConstruction:\u003c\/em\u003e Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFinish:\u003c\/em\u003e Powder-coated yellow\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCountry of Origin:\u003c\/em\u003e Sweden\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Öhlins","offers":[{"title":"Default Title","offer_id":53645323600138,"sku":"00580-09","price":104.37,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/RearOhlinsSpring_0777b02b-13a2-4066-92a2-e1608f6fba2e.png?v=1788866571","url":"https:\/\/inter-pace.com\/en-be\/products\/ohlins-shock-spring-50-n-mm-250-mm-57-mm-00580-09","provider":"Inter-Pace","version":"1.0","type":"link"}