{"product_id":"ohlins-shaft-12-513-alu-21637-05","title":"Öhlins Shaft 12\/513 Alu – 21637-05","description":"\u003cp\u003eShaft 12\/513 Alu, Öhlins part number 21637-05. A bent shaft drags in the head and destroys the seal within hours — replace, never straighten.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eDiameter 12 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21637-05\u003c\/li\u003e\n\u003cli\u003eLength 513 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eDimensionally this is 12 mm, 513 mm, which is how it is told apart from the rest of the range. The damper shaft carries the piston and passes through the seal head, so its surface finish decides how long the seals last. Öhlins offers several lengths per diameter because stroke differs by model. A shaft is threaded at both ends: one for the piston, one for the mounting.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eEvery part in this catalogue is one Öhlins fits itself during assembly and service. Öhlins supports its suspension with individual service parts, which is why a fifteen-year-old damper can still be rebuilt to specification. Ask us before ordering if you are unsure: a wrong part in a pressurised unit is an expensive lesson. The exploded drawing for your unit names the number; if you do not have it, we do.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003ePart number 21637-05 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. The published dimensions are diameter 12 mm, length 513 mm — measure the old part against them if you are unsure. Shaft diameter sets the displaced volume, which is why it is part of the damper's specification. A shaft is threaded at both ends: one for the piston, one for the mounting.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eÖhlins recommends that its units are serviced by an authorised centre. We are one: rebuild, revalve and setup all happen in our own workshop.\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 21637-05\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Damper Shafts\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDiameter:\u003c\/em\u003e 12 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eLength:\u003c\/em\u003e 513 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":53650768560394,"sku":"21637-05","price":331.0,"currency_code":"BBD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21637-05_4363c32e-e323-4618-afd1-65861d87497c.png?v=1788877376","url":"https:\/\/inter-pace.com\/en-bb\/products\/ohlins-shaft-12-513-alu-21637-05","provider":"Inter-Pace","version":"1.0","type":"link"}