{"product_id":"ohlins-shock-spring-95-n-mm-170-mm-57-mm-21102-31","title":"Öhlins Shock Spring 95 N\/mm \/ 170 mm \/ Ø 57 mm – 21102-31","description":"\u003cp\u003eÖhlins part number 21102-31 is a shock absorber spring rated at 95 N\/mm, 170 mm long with a 57 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\u003eMeasured spring rate 95 N\/mm\u003c\/li\u003e\n\u003cli\u003eInner diameter 57 mm\u003c\/li\u003e\n\u003cli\u003eFree length 170 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21102-31\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow Öhlins Makes Them\u003c\/h2\u003e\u003cp\u003eThe unit is rebuildable: seals, shims and oil are catalogue items, not a reason to buy a new one. Seals are specified for temperature stability rather than for the lowest unit cost. Shafts are hardened and surface-treated so the seal has a consistent surface to run against.\u003c\/p\u003e\u003ch2\u003eDimensions\u003c\/h2\u003e\u003cp\u003eFree length 170 mm, inner diameter 57 mm, rate 95 N\/mm — those three figures define the part completely.\u003c\/p\u003e\u003ch2\u003eChoosing 95 N\/mm\u003c\/h2\u003e\u003cp\u003eSupport under braking improves; small-bump comfort gives a little back. Firm rates trade some small-bump comfort for support — the right trade on a good surface at speed. A firm rate holds the chassis attitude when the front or rear is loaded hard. 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\u003eÖhlins supplies most of its shocks without a spring precisely so the rate can be matched to the rider rather than averaged. Static sag at the rear sets the whole chassis attitude — get it wrong and the front geometry goes with it. 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\u003eÖhlins lists no fixed model here — the spring is defined by its measurements, and any fork with matching dimensions can take it. If you are replacing a sagged original, measure its free length first — a tired spring often measures several millimetres short. This 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.\u003c\/p\u003e\u003ch2\u003eFitting\u003c\/h2\u003e\u003cp\u003eÖhlins supplies a setting sheet with the springs; the numbers on it assume the specified oil. Preload spacers usually need shortening or lengthening so the installed length stays correct. Both legs are done together, and both take the same rate.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eRoad approval: springs are not separately type-approved in Germany because they substitute a part that is already homologated with the fork. Model-specific documents, where they exist, are named above.\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 21102-31\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Rate:\u003c\/em\u003e 95 N\/mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFree Length:\u003c\/em\u003e 170 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 57 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":53645412040970,"sku":"21102-31","price":287000.0,"currency_code":"CDF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/RearOhlinsSpring_264d48ba-f375-44c7-b27e-c4ea384dcedb.png?v=1788866880","url":"https:\/\/inter-pace.com\/en-cd\/products\/ohlins-shock-spring-95-n-mm-170-mm-57-mm-21102-31","provider":"Inter-Pace","version":"1.0","type":"link"}