{"product_id":"ohlins-shaft-8-484-21812-21","title":"Öhlins Shaft 8\/484 – 21812-21","description":"\u003cp\u003eShaft 8\/484, Öhlins part number 21812-21. 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\u003eLength 484 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eDiameter 8 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21812-21\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eAt 8 mm, 484 mm it fits one position only; the next size up carries a different number. Öhlins hardens and surface-treats its shafts because a scratch on the running surface takes the seal with it. The damper shaft carries the piston and passes through the seal head, so its surface finish decides how long the seals last. Shaft straightness matters: a bent shaft drags in the seal head and destroys the seal within hours.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eÖhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. Suspension is one of the few areas where the original part is genuinely the cheaper decision. Öhlins numbers do not follow a logic you can guess — always read them from the documentation. Send us the model and serial number of your unit and we will confirm the position before you order.\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 — 21812-21 in this case. Öhlins states diameter 8 mm, length 484 mm for this number, and those figures are the deciding ones. Surface hardness is what lets the shaft survive thousands of cycles through a seal. Shaft diameter sets the volume displaced into the reservoir on every compression stroke.\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 21812-21\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 484 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":53652870005002,"sku":"21812-21","price":187.91,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21812-21_fe280a33-b20d-4d51-9cf5-c0422c08e7d9.png?v=1788880287","url":"https:\/\/inter-pace.com\/en-ca\/products\/ohlins-shaft-8-484-21812-21","provider":"Inter-Pace","version":"1.0","type":"link"}