{"product_id":"ohlins-cylinder-head-ttx36-21070-21","title":"Öhlins Cylinder head TTX36 – 21070-21","description":"\u003cp\u003eCylinder head TTX36, Öhlins part number 21070-21. Head and tube are matched by thread and diameter; neither is interchangeable across units.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins part number 21070-21\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eThis position is identified by its number rather than by a dimension. The tube is what the whole damper is built around: everything else references its bore. The cylinder head closes the working bore and carries the shaft seal and its bushing. Aluminium tubes are hard-anodised in the bore so the piston band has a hard surface to run against.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eAn original part keeps the unit within its published specification; a near-equivalent quietly moves it. The part number is the contract: it defines material, dimension and finish together. The exploded drawing for your unit names the number; if you do not have it, we do. 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.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003eÖhlins identifies this position by the number 21070-21 in the exploded view for the unit it belongs to. Öhlins does not publish a dimension here — go by the number and the exploded view. Tubes are replaced when the bore is marked; polishing them out changes the clearance and makes it worse. Twin-tube dampers use two concentric tubes, and both are listed separately.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eA damper rebuild is workshop work: it needs the unit dismantled, the shim stack rebuilt in the correct order and the gas charge reset. We are an authorised Öhlins service centre and do exactly that in house — send us the unit or ask us to fit the part with your order.\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 21070-21\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":53652535935242,"sku":"21070-21","price":1429.79,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21070-21_7c5418ad-8a5b-4fad-9723-d8d9004cc676.png?v=1788879481","url":"https:\/\/inter-pace.com\/en-ca\/products\/ohlins-cylinder-head-ttx36-21070-21","provider":"Inter-Pace","version":"1.0","type":"link"}