{"product_id":"ohlins-shock-spring-155-n-mm-200-mm-51-mm-21066-60","title":"Öhlins Shock Spring 155 N\/mm \/ 200 mm \/ Ø 51 mm – 21066-60","description":"\u003cp\u003eÖhlins part number 21066-60 is a shock absorber spring rated at 155 N\/mm, 200 mm long with a 51 mm inner diameter. Rear spring rate sets ride height, static sag and how much of the damper's stroke is actually usable.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins part number 21066-60\u003c\/li\u003e\n\u003cli\u003eMeasured spring rate 155 N\/mm\u003c\/li\u003e\n\u003cli\u003eFree length 200 mm\u003c\/li\u003e\n\u003cli\u003eInner diameter 51 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy the Rate Holds\u003c\/h2\u003e\u003cp\u003eEach spring is set before it is measured, so it will not settle and lose rate in service. Production has stayed in Sweden since the company was founded in 1976. Öhlins publishes recommended sag figures for its springs, so the setup has a reference rather than a feel.\u003c\/p\u003e\u003ch2\u003eThe Numbers That Matter\u003c\/h2\u003e\u003cp\u003eAt 200 mm free length and 51 mm inner diameter, this spring is dimensionally interchangeable with anything of the same size — the rate is what makes it a different part.\u003c\/p\u003e\u003ch2\u003eWhere This Rate Belongs\u003c\/h2\u003e\u003cp\u003eA firm rate holds the chassis attitude when the front or rear is loaded hard. Support under braking improves; small-bump comfort gives a little back. Firm rates also suit machines carrying luggage as a matter of course. 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\u003eWhat the Rear Spring Decides\u003c\/h2\u003e\u003cp\u003eAdding a pillion or luggage changes the rear load enough that the standard rate stops working properly. Öhlins supplies most of its shocks without a spring precisely so the rate can be matched to the rider rather than averaged. On 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.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eSag figures, not feel, decide whether a rate is right. Öhlins publishes the targets for its own units. A spring is one of the few suspension parts that is genuinely interchangeable: same bore, same free length, and it goes in. Selection is by measurement. If the diameter and free length match your fork, the remaining question is the rate.\u003c\/p\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003eCheck the free length against the old springs before fitting — a sagged original often measures short. Rate and preload are separate adjustments: get the rate right first, then set sag with preload. The fork legs come off, the springs are swapped and the oil level is reset — half a day in most workshops.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eRoad approval: not applicable to the spring on its own. Öhlins issues approvals against complete suspension units, not individual springs.\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 21066-60\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Rate:\u003c\/em\u003e 155 N\/mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFree Length:\u003c\/em\u003e 200 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 51 mm\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":53645411320074,"sku":"21066-60","price":145.29,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/RearOhlinsSpring_b8d788d7-878a-44f6-a51b-062221fb2a44.png?v=1788866874","url":"https:\/\/inter-pace.com\/en-it\/products\/ohlins-shock-spring-155-n-mm-200-mm-51-mm-21066-60","provider":"Inter-Pace","version":"1.0","type":"link"}