{"product_id":"ohlins-cylinder-head-ttx36-21890-01","title":"Öhlins Cylinder head TTX36 – 21890-01","description":"\u003cp\u003eCylinder head TTX36, Öhlins part number 21890-01. Most seal kits are built around a specific head design.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21890-01\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Is\u003c\/h2\u003e\u003cp\u003eThere is no measurement to check here — the number and the exploded view identify it. A head that has been over-tightened distorts and stops sealing. Öhlins hones its tubes to a defined surface finish rather than simply to a diameter. Wall thickness and bore finish are what let a cylinder hold pressure without deforming under load.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eÖhlins keeps service parts available for units long after they leave the current price list. Rebuilding to specification only works if the parts are to specification — that starts here. Ask us before ordering if you are unsure: a wrong part in a pressurised unit is an expensive lesson. We can check the number against the Öhlins exploded view before you order — just ask.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003eÖhlins identifies this position by the number 21890-01 in the exploded view for the unit it belongs to. Where no measurement is given, the drawing position is what identifies the part. The tube is what the whole damper is built around: everything else references its bore. Twin-tube dampers use two concentric tubes, and both are listed separately.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eFitting service parts means opening a pressurised unit. As an authorised Öhlins service centre we do that here, with the right tools and a dyno check afterwards — just ask.\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 21890-01\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":53652903297290,"sku":"21890-01","price":1137000.0,"currency_code":"PYG","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21890-01_a1a0a079-e3ef-40ae-8392-7ead007856c3.png?v=1788880392","url":"https:\/\/inter-pace.com\/en-py\/products\/ohlins-cylinder-head-ttx36-21890-01","provider":"Inter-Pace","version":"1.0","type":"link"}