{"product_id":"ohlins-shaft-8-474-21812-20","title":"Öhlins Shaft 8\/474 – 21812-20","description":"\u003cp\u003eShaft 8\/474, Öhlins part number 21812-20. Its polished section runs directly in the seal, so any mark there ends the seal's life quickly.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDiameter 8 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21812-20\u003c\/li\u003e\n\u003cli\u003eLength 474 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eÖhlins gives it as 8 mm, 474 mm; nothing about that is approximate. The damper shaft carries the piston through the oil and out through the seal head. This is a part that is replaced rather than repaired. Öhlins hardens and surface-treats its shafts because a scratch on the running surface takes the seal with it.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eThis is an original Öhlins part, not an aftermarket equivalent — the tolerances are the ones the unit was assembled to. Rebuilding to specification only works if the parts are to specification — that starts here. Tell us the damper's model designation and year and we will match the number for you. Where a number has been superseded, Öhlins states the replacement — we pass that on.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003eThe reliable route is the exploded drawing: find the position, read the number, order it — 21812-20 in this case. Check diameter 8 mm, length 474 mm against what you have removed; a close size is not the same part. Surface hardness is what lets the shaft survive thousands of cycles through a seal. The shaft is threaded at both ends: piston at one, mounting at the other.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eIf you would rather not open the damper yourself, we can do it — we are an authorised Öhlins service centre and rebuild these units as a matter of routine.\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 21812-20\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 8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eLength:\u003c\/em\u003e 474 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":53651738362122,"sku":"21812-20","price":102.7,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21812-20_b5b2e4a4-ebc1-4c96-9513-617efffdab17.png?v=1788877855","url":"https:\/\/inter-pace.com\/en-om\/products\/ohlins-shaft-8-474-21812-20","provider":"Inter-Pace","version":"1.0","type":"link"}