{"product_id":"ohlins-outer-tube-43-55-57-533-21630-29","title":"Öhlins Outer tube 43\/55\/57\/533 – 21630-29","description":"\u003cp\u003eOuter tube 43\/55\/57\/533, Öhlins part number 21630-29. Öhlins publishes tube diameters by fork model, and they are not interchangeable across the range.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDimension B 55 mm\u003c\/li\u003e\n\u003cli\u003eDimension A 43 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21630-29\u003c\/li\u003e\n\u003cli\u003eDimension C 57 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Is\u003c\/h2\u003e\u003cp\u003e21630-29 is the 43 mm, 55 mm, 57 mm version — Öhlins lists each size separately. Öhlins publishes tube diameters by fork model, and they are not interchangeable across the range. Fork tubes are the structural part of the front end and carry the braking load into the yokes. Inner tubes carry a low-friction coating; once it is through, the seals wear quickly.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eÖhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. Öhlins supports its suspension with individual service parts, which is why a fifteen-year-old damper can still be rebuilt to specification. Öhlins parts are unit-specific: a close dimension is not a substitute. 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\u003eThe reliable route is the exploded drawing: find the position, read the number, order it — 21630-29 in this case. Check dimension a 43 mm, dimension b 55 mm, dimension c 57 mm against what you have removed; a close size is not the same part. Axle clamps and lower legs are machined to hold the axle without distorting the fork. Outer tubes hold the bushings and the seal head, so their bore finish matters as much as the inner tube's outside.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eWe are an authorised Öhlins service centre, so you do not have to source the tools and the nitrogen: send us the damper and we rebuild it with the correct parts and the correct setting.\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 21630-29\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Outer Tubes\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension A:\u003c\/em\u003e 43 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension B:\u003c\/em\u003e 55 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension C:\u003c\/em\u003e 57 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":53652635255050,"sku":"21630-29","price":418.66,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21630-29_a51158f8-de1a-424a-b797-70d59ca9300e.png?v=1788879773","url":"https:\/\/inter-pace.com\/en-ca\/products\/ohlins-outer-tube-43-55-57-533-21630-29","provider":"Inter-Pace","version":"1.0","type":"link"}