{"product_id":"ohlins-piston-band-soft-solid-8-36-21018-05","title":"Öhlins Piston band soft solid 8\/36 – 21018-05","description":"\u003cp\u003ePiston band soft solid 8\/36, Öhlins part number 21018-05. Rebuilding a piston means keeping the shim order, because the stack is the tuning.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eDimension B 36 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21018-05\u003c\/li\u003e\n\u003cli\u003eDimension A 8 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eÖhlins publishes 8 mm, 36 mm for 21018-05 — the dimensions are the identity of the part. Port area and shim seat geometry decide the damping curve before any adjuster is touched. Öhlins uses a piston band rather than metal-to-metal contact, which is what keeps the bore intact. Replacing a piston is a workshop job because the shim stack has to be rebuilt in the correct order.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eÖhlins numbers every position so a workshop can order precisely what it needs, not a whole assembly. This is an original Öhlins part, not an aftermarket equivalent — the tolerances are the ones the unit was assembled to. 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. Ask us before ordering if you are unsure: a wrong part in a pressurised unit is an expensive lesson.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003eÖhlins identifies this position by the number 21018-05 in the exploded view for the unit it belongs to. The published dimensions are dimension a 8 mm, dimension b 36 mm — measure the old part against them if you are unsure. Öhlins machines its pistons rather than sintering them, which is why the port edges stay sharp. Replacing a piston is a workshop job because the shim stack has to be rebuilt in the correct order.\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 21018-05\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Piston Bands\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension A:\u003c\/em\u003e 8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension B:\u003c\/em\u003e 36 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":53652473184522,"sku":"21018-05","price":47.82,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21018-05_8dd1f75e-57f6-47ba-ba38-461ea83e25c0.png?v=1788879314","url":"https:\/\/inter-pace.com\/products\/ohlins-piston-band-soft-solid-8-36-21018-05","provider":"Inter-Pace","version":"1.0","type":"link"}