{"product_id":"ohlins-cylinder-head-90-pg-50-40-10401-51","title":"Öhlins Cylinder head 90° pg 50\/40 – 10401-51","description":"\u003cp\u003eCylinder head 90° pg 50\/40, Öhlins part number 10401-51. Aluminium tubes are hard-anodised in the bore so the piston band has a hard surface to run against.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLength 40 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 10401-51\u003c\/li\u003e\n\u003cli\u003eDiameter 50 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eThis one measures 50 mm, 40 mm, and those figures are what separate it from the neighbouring numbers. Öhlins machines the head so the bushing bore is concentric with the seal — otherwise the shaft wears one side. The tube is what the whole damper is built around: everything else references its bore. Wall thickness and bore finish are what let a cylinder hold pressure without deforming under load.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eThe alternative to a service part is usually a new damper, which is why this catalogue exists. The part is identical to what Öhlins fits in production — same supplier, same specification. We can supply the whole position from the drawing rather than the single piece if that is easier. Where a number has been superseded, Öhlins states the replacement — we pass that on.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003eÖhlins identifies this position by the number 10401-51 in the exploded view for the unit it belongs to. Check diameter 50 mm, length 40 mm against what you have removed; a close size is not the same part. A tube that has been bottomed hard often shows a ring mark; that is a reason to replace it. Tubes are replaced when the bore is marked; polishing them out changes the clearance and makes it worse.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eIf you would rather not open the damper yourself, we can do it — we are an authorised Öhlins service centre and rebuild these units as a matter of routine.\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 10401-51\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Cylinder Heads\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDiameter:\u003c\/em\u003e 50 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eLength:\u003c\/em\u003e 40 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":53649509155082,"sku":"10401-51","price":169.38,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/10401-51_73e2b8a3-8da0-4620-b50c-b69a50c35b1a.png?v=1788875778","url":"https:\/\/inter-pace.com\/products\/ohlins-cylinder-head-90-pg-50-40-10401-51","provider":"Inter-Pace","version":"1.0","type":"link"}