{"product_id":"ohlins-cylinder-head-ttx39-21850-01","title":"Öhlins Cylinder head TTX39 – 21850-01","description":"\u003cp\u003eCylinder head TTX39, Öhlins part number 21850-01. Öhlins matches tube and piston as a pair during assembly, which is why the part numbers are specific.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins part number 21850-01\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Is\u003c\/h2\u003e\u003cp\u003eÖhlins publishes no separate dimension for this position, so the part number carries the identity. The cylinder head closes the working bore and carries the shaft seal and its bushing. Corrosion inside a tube is terminal: it cannot be honed out without changing the clearance. Reservoir tubes carry the gas charge and are built to the same standard as the working cylinder.\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 publishes dimensions for its service parts so a workshop can verify before it fits. Service parts are supplied per piece unless the description says otherwise. Service parts are ordered per piece unless stated otherwise.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003e21850-01 is the Öhlins number for this position — the same one printed in the service documentation. This position has no published dimension, so the part number is the only reliable identifier. Length here is the working length, not the overall dimension, which is why two similar tubes are not interchangeable. Most seal kits are built around a specific head design.\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 21850-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Cylinder Heads\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":53652886094090,"sku":"21850-01","price":1134000.0,"currency_code":"CDF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21850-01_a9e5a072-2f4f-4575-8443-ef37ed707ee8.png?v=1788880336","url":"https:\/\/inter-pace.com\/en-cd\/products\/ohlins-cylinder-head-ttx39-21850-01","provider":"Inter-Pace","version":"1.0","type":"link"}