{"product_id":"ohlins-fork-springs-9-0-n-mm-270-mm-23-5-mm-08429-90","title":"Öhlins Fork Springs 9.0 N\/mm \/ 270 mm \/ Ø 23.5 mm – 08429-90","description":"\u003cp\u003eÖhlins part number 08429-90 is a pair of fork springs rated at 9.0 N\/mm, 270 mm long with a 23.5 mm inner diameter. A fork that is sprung wrong uses up its travel before the damping has a chance to work.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSupplied as a pair\u003c\/li\u003e\n\u003cli\u003eMeasured spring rate 9.0 N\/mm\u003c\/li\u003e\n\u003cli\u003e146 mm of usable stroke\u003c\/li\u003e\n\u003cli\u003eStraight-wound, constant rate\u003c\/li\u003e\n\u003cli\u003eInner diameter 23.5 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 08429-90\u003c\/li\u003e\n\u003cli\u003eFree length 270 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eManufacture and Tolerance\u003c\/h2\u003e\u003cp\u003eÖhlins sets a baseline for each part number on the machine it was developed on, so it works before anything is adjusted. Two units carrying the same part number behave the same way out of the box, which is the whole point of testing each one. The unit is rebuildable: seals, shims and oil are catalogue items, not a reason to buy a new one.\u003c\/p\u003e\u003ch2\u003eDimensions\u003c\/h2\u003e\u003cp\u003eThe 23.5 mm bore and 270 mm length are the two figures that decide whether it physically fits; 9.0 N\/mm decides whether it suits the rider.\u003c\/p\u003e\u003ch2\u003eWhat This Rate Does\u003c\/h2\u003e\u003cp\u003eFrom here it is easy to move one step in either direction once you have ridden it. If you are unsure and close to average weight in full kit, this is the sensible starting point. Rates here suit a solo rider of typical weight on a road-going machine. Road surfaces are the hardest test of a spring rate, because the fork has to cope with both a smooth stretch and a broken one.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eÖhlins lists no fixed model here — the spring is defined by its measurements, and any fork with matching dimensions can take it. Rate is the variable that depends on the rider, not on the machine. Two people on the same bike may well want two different numbers. The safest way to choose is by static sag: set the target figure, and the rate follows from whether you can reach it with preload.\u003c\/p\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003eÖhlins states the oil and the air-gap for this application — both are part of the setting, not a detail. Oil level is measured from the top of the tube with the fork compressed and the spring removed. Springs are supplied ready to fit; no cutting, grinding or packing is needed.\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\u003eFitting matters as much as the part. We are an authorised Öhlins service centre and carry out installation, servicing and setup ourselves — get in touch and we will arrange it alongside your 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 08429-90\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Rate:\u003c\/em\u003e 9.0 N\/mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFree Length:\u003c\/em\u003e 270 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 23.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eStroke:\u003c\/em\u003e 146 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eConstruction:\u003c\/em\u003e Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003ePackaging Unit:\u003c\/em\u003e Pair\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":53645378519306,"sku":"08429-90","price":161.46,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/ForkSprings-v2_ffc771f6-56fc-4f45-b6db-7e475dde08ba.png?v=1788864061","url":"https:\/\/inter-pace.com\/products\/ohlins-fork-springs-9-0-n-mm-270-mm-23-5-mm-08429-90","provider":"Inter-Pace","version":"1.0","type":"link"}