{"product_id":"ohlins-shock-spring-150-n-mm-45-mm-61-mm-15021-15","title":"Öhlins Shock Spring 150 N\/mm \/ 45 mm \/ Ø 61 mm – 15021-15","description":"\u003cp\u003eÖhlins part number 15021-15 is a shock absorber spring rated at 150 N\/mm, 45 mm long with a 61 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\u003eÖhlins part number 15021-15\u003c\/li\u003e\n\u003cli\u003eInner diameter 61 mm\u003c\/li\u003e\n\u003cli\u003e15 mm of usable stroke\u003c\/li\u003e\n\u003cli\u003eMeasured spring rate 150 N\/mm\u003c\/li\u003e\n\u003cli\u003ePowder-coated black\u003c\/li\u003e\n\u003cli\u003eFree length 45 mm\u003c\/li\u003e\n\u003cli\u003eStraight-wound, constant rate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eManufacture and Tolerance\u003c\/h2\u003e\u003cp\u003eÖhlins winds, heat-sets and then measures every spring individually — the rate on the label is the rate you get. The unit is rebuildable: seals, shims and oil are catalogue items, not a reason to buy a new one. 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\u003eFree length 45 mm, inner diameter 61 mm, rate 150 N\/mm — those three figures define the part completely.\u003c\/p\u003e\u003ch2\u003eChoosing 150 N\/mm\u003c\/h2\u003e\u003cp\u003eA firm rate holds the chassis attitude when the front or rear is loaded hard. Firm rates trade some small-bump comfort for support — the right trade on a good surface at speed. Support under braking improves; small-bump comfort gives a little back. Ride quality on the road is decided by rate first and damping second.\u003c\/p\u003e\u003ch2\u003eWhat the Rear Spring Decides\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. The damper can only control the spring it is given; the wrong rate makes every setting a compromise. A spring that has settled in service sits shorter than new, which quietly lowers the bike and steepens the steering.\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. 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. Öhlins builds springs to dimensions rather than to model lists, so the question is always the same: does the diameter fit, does the length fit, and is the rate right for the rider?\u003c\/p\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003eThe job needs no special tools beyond a fork spring compressor and a measuring rod for the oil level. Work on both legs in one session so the fork stays symmetrical. Spring preload spacers may need adjusting to keep the installed length correct.\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\u003eÖhlins recommends that its suspension is fitted by an authorised service centre. We are one, and we do the work here: installation, servicing and a proper setup. Ask us and we will include 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 15021-15\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Rate:\u003c\/em\u003e 150 N\/mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFree Length:\u003c\/em\u003e 45 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 61 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eStroke:\u003c\/em\u003e 15 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 black\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":53645400178954,"sku":"15021-15","price":33300.0,"currency_code":"XOF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/RearOhlinsSpring_df662d31-7eaa-4593-b702-6dcdcd343744.png?v=1788866833","url":"https:\/\/inter-pace.com\/en-ci\/products\/ohlins-shock-spring-150-n-mm-45-mm-61-mm-15021-15","provider":"Inter-Pace","version":"1.0","type":"link"}