{"product_id":"ohlins-adaptor-base-valve-m22x1-58-21758-09","title":"Öhlins Adaptor base valve M22x1\/58 – 21758-09","description":"\u003cp\u003eAdaptor base valve M22x1\/58, Öhlins part number 21758-09. The piston carries the shim stacks and meters the oil; its port layout is what makes an Öhlins damper behave the way it does.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDimension A 1 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eThread M22x1\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21758-09\u003c\/li\u003e\n\u003cli\u003eDimension B 58 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Is\u003c\/h2\u003e\u003cp\u003eÖhlins publishes 1 mm, 58 mm for 21758-09 — the dimensions are the identity of the part. Rebuilding a piston means keeping the shim order, because the stack is the tuning. Öhlins machines the ports rather than casting them, so the edges stay sharp and the flow predictable. The seat face has to be flat enough for the first shim to seal against it.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eSuspension is one of the few areas where the original part is genuinely the cheaper decision. A damper that can be rebuilt is a damper that stays on the bike; that is the whole argument for original service parts. Service parts are ordered per piece unless stated otherwise. We can supply the whole position from the drawing rather than the single piece if that is easier.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003eThe reliable route is the exploded drawing: find the position, read the number, order it — 21758-09 in this case. Öhlins states dimension a 1 mm, dimension b 58 mm for this number, and those figures are the deciding ones. Jets meter fixed bleed flow and are sized in tenths of a millimetre. Rebuilding a piston means keeping the shim order, because the stack is the tuning.\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 21758-09\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Valves\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension A:\u003c\/em\u003e 1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension B:\u003c\/em\u003e 58 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eThread:\u003c\/em\u003e M22x1\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":53651595854090,"sku":"21758-09","price":10700.0,"currency_code":"ALL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21758-09_20bdd1e9-89b5-4c77-949d-0a8c87af0b48.png?v=1788877783","url":"https:\/\/inter-pace.com\/en-al\/products\/ohlins-adaptor-base-valve-m22x1-58-21758-09","provider":"Inter-Pace","version":"1.0","type":"link"}