{"product_id":"ohlins-shaft-12-453-alu-21637-03","title":"Öhlins Shaft 12\/453 Alu – 21637-03","description":"\u003cp\u003eShaft 12\/453 Alu, Öhlins part number 21637-03. The damper shaft carries the piston through the oil and out through the seal head.\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\u003eLength 453 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21637-03\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003e21637-03 is the 12 mm, 453 mm version — Öhlins lists each size separately. A bent shaft drags in the head and destroys the seal within hours — replace, never straighten. The shaft is threaded at both ends: piston at one, mounting at the other. The polished section runs in the seal; a mark there ends the seal's life.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eThe tolerances here are the ones the unit was assembled to, not a pattern equivalent's interpretation of them. Öhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. Send us the model and serial number of your unit and we will confirm the position before you order. Service parts are supplied per piece unless the description says otherwise.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003eThe reliable route is the exploded drawing: find the position, read the number, order it — 21637-03 in this case. Check diameter 12 mm, length 453 mm against what you have removed; a close size is not the same part. Shafts are not shortened or extended; the length is the specification. Öhlins offers shafts in several lengths per diameter because the stroke differs by model.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eFitting service parts means opening a pressurised unit. As an authorised Öhlins service centre we do that here, with the right tools and a dyno check afterwards — just ask.\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 21637-03\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 453 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":53650764464394,"sku":"21637-03","price":266.0,"currency_code":"BBD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21637-03_7d8984ab-a2f6-472b-8a5a-5eeac3be76e7.png?v=1788877374","url":"https:\/\/inter-pace.com\/en-bb\/products\/ohlins-shaft-12-453-alu-21637-03","provider":"Inter-Pace","version":"1.0","type":"link"}