{"product_id":"ohlins-piston-6-22-21815-01","title":"Öhlins Piston 6\/22 – 21815-01","description":"\u003cp\u003ePiston 6\/22, Öhlins part number 21815-01. Needle geometry sets the shape of the adjustable range, not just its size.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eDimension B 22 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21815-01\u003c\/li\u003e\n\u003cli\u003eDimension A 6 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Is\u003c\/h2\u003e\u003cp\u003e6 mm, 22 mm: that is the whole specification, and it has to match what came out. Port area and seat geometry decide the damping before any adjuster is touched. Öhlins machines its pistons so the port edges stay sharp and the flow predictable. Öhlins uses a piston band rather than metal-to-metal contact, which is what keeps the bore intact.\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. Öhlins numbers every position so a workshop can order precisely what it needs, not a whole assembly. If the unit is already apart, compare the published dimensions with the part in your hand. Öhlins parts are unit-specific: a close dimension is not a substitute.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003eIf the unit is already open, compare the dimensions below with the part in your hand before ordering 21815-01. Öhlins states dimension a 6 mm, dimension b 22 mm for this number, and those figures are the deciding ones. Port area and shim seat geometry decide the damping curve before any adjuster is touched. Jets meter fixed bleed flow and are sized in tenths of a millimetre.\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 21815-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Pistons\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension A:\u003c\/em\u003e 6 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension B:\u003c\/em\u003e 22 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":53652872691978,"sku":"21815-01","price":56.34,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21815-01_1fe6570e-425e-417a-a964-7372c84a5fe7.png?v=1788880293","url":"https:\/\/inter-pace.com\/products\/ohlins-piston-6-22-21815-01","provider":"Inter-Pace","version":"1.0","type":"link"}