{"product_id":"ohlins-shaft-12-483-alu-21637-04","title":"Öhlins Shaft 12\/483 Alu – 21637-04","description":"\u003cp\u003eShaft 12\/483 Alu, Öhlins part number 21637-04. This is a part that is replaced rather than repaired.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLength 483 mm\u003c\/li\u003e\n\u003cli\u003eDiameter 12 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21637-04\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eÖhlins publishes 12 mm, 483 mm for 21637-04 — the dimensions are the identity of the part. A shaft is measured by diameter and overall length, and both are specific to the unit it belongs to. The damper shaft carries the piston and passes through the seal head, so its surface finish decides how long the seals last. Shafts are not shortened or extended; the length is the specification.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eÖhlins publishes dimensions for its service parts so a workshop can verify before it fits. The tolerances here are the ones the unit was assembled to, not a pattern equivalent's interpretation of them. If you are unsure which number your unit takes, send us the model and serial number of the damper and we will look it up. Öhlins numbers do not follow a logic you can guess — always read them from the documentation.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003eOrder under 21637-04. Where several sizes share a description, only the number separates them. Öhlins states diameter 12 mm, length 483 mm for this number, and those figures are the deciding ones. Öhlins offers shafts in several lengths per diameter because the stroke differs by model. Shaft diameter sets the displaced volume, which is why it is part of the damper's specification.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eAsk us about a full service: as an authorised Öhlins centre we strip, inspect, replace what is worn and set the unit back to its specification.\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 21637-04\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 483 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":53652640071946,"sku":"21637-04","price":126.68,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21637-04_a1a27c9a-ac09-47f3-b2e4-1962b682bce5.png?v=1788879798","url":"https:\/\/inter-pace.com\/en-be\/products\/ohlins-shaft-12-483-alu-21637-04","provider":"Inter-Pace","version":"1.0","type":"link"}