{"product_id":"ohlins-shock-spring-18-n-mm-280-mm-46-mm-00281-78","title":"Öhlins Shock Spring 18 N\/mm \/ 280 mm \/ Ø 46 mm – 00281-78","description":"\u003cp\u003eÖhlins part number 00281-78 is a shock absorber spring rated at 18 N\/mm, 280 mm long with a 46 mm inner diameter. A rear spring matched to rider and load keeps the chassis attitude where the factory intended it.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMeasured spring rate 18 N\/mm\u003c\/li\u003e\n\u003cli\u003eStraight-wound, constant rate\u003c\/li\u003e\n\u003cli\u003eFree length 280 mm\u003c\/li\u003e\n\u003cli\u003e180 mm of usable stroke\u003c\/li\u003e\n\u003cli\u003ePowder-coated yellow\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 00281-78\u003c\/li\u003e\n\u003cli\u003eInner diameter 46 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow Öhlins Makes Them\u003c\/h2\u003e\u003cp\u003eÖhlins machines its own critical components instead of buying them in, and the tolerances are where the money goes. Production has stayed in Sweden since the company was founded in 1976. Every unit is dyno-tested against the curve held for its part number, not sampled from a batch.\u003c\/p\u003e\u003ch2\u003eThe Numbers That Matter\u003c\/h2\u003e\u003cp\u003eThe 46 mm bore and 280 mm length are the two figures that decide whether it physically fits; 18 N\/mm decides whether it suits the rider.\u003c\/p\u003e\u003ch2\u003eWhat This Rate Does\u003c\/h2\u003e\u003cp\u003eOn a machine ridden solo and mostly on the road, softer is often the honest choice. This is the end of the range where small-bump compliance matters more than resistance to diving. Comfort and grip come from the spring moving early; this is the end of the range where that happens. A road machine spends most of its life in the first third of the fork's travel — that is the part the rate governs.\u003c\/p\u003e\u003ch2\u003eWhat the Rear Spring Decides\u003c\/h2\u003e\u003cp\u003eBecause the linkage is progressive on most modern machines, a small change in rate moves the sag more than riders expect. Two riders 20 kg apart on the same motorcycle genuinely need different rates, not different clicks. Static sag at the rear sets the whole chassis attitude — get it wrong and the front geometry goes with it.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eSelection is by measurement. If the diameter and free length match your fork, the remaining question is the rate. There is no model list for this size because the spring is a dimensional part: it fits whatever fork it physically fits. If you are replacing a sagged original, measure its free length first — a tired spring often measures several millimetres short.\u003c\/p\u003e\u003ch2\u003eFitting\u003c\/h2\u003e\u003cp\u003eOil level is measured from the top of the tube with the fork compressed and the spring removed. Öhlins states the oil and the air-gap for this application — both are part of the setting, not a detail. Note the original oil level before draining — it is a useful reference even when Öhlins specifies its own.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eRoad approval: none is issued for springs as such — they replace an existing component of the same function. Any model-specific approval is listed under Applications.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eÖhlins suspension rewards careful fitting. We recommend having the work done by an authorised Öhlins service centre — and we are one ourselves: we fit, service and set up Öhlins components in house. If you would like us to handle the installation, just ask and we will quote it with the order.\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 00281-78\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Rate:\u003c\/em\u003e 18 N\/mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFree Length:\u003c\/em\u003e 280 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 46 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eStroke:\u003c\/em\u003e 180 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":53645321273610,"sku":"00281-78","price":72.08,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/RearOhlinsSpring_76dd037a-b12e-499b-9abe-b6cf4f484d45.png?v=1788866557","url":"https:\/\/inter-pace.com\/en-eu\/products\/ohlins-shock-spring-18-n-mm-280-mm-46-mm-00281-78","provider":"Inter-Pace","version":"1.0","type":"link"}