{"product_id":"ohlins-piston-12-46-assy-15039-10","title":"Öhlins Piston 12\/46 assy – 15039-10","description":"\u003cp\u003ePiston 12\/46 assy, Öhlins part number 15039-10. Öhlins machines its pistons so the port edges stay sharp and the flow predictable.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDimension A 12 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eDimension B 46 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 15039-10\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003e12 mm, 46 mm: that is the whole specification, and it has to match what came out. Öhlins machines the ports rather than casting them, so the edges stay sharp and the flow predictable. Needle geometry sets the shape of the adjustable range, not just its size. Piston bands are consumables — they wear against the bore and lose their seal gradually.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eSuspension is one of the few areas where the original part is genuinely the cheaper decision. An original part keeps the unit within its published specification; a near-equivalent quietly moves it. For a full rebuild, the seal kit plus the wear parts is usually the sensible order. Order by part number — descriptions repeat across sizes, numbers do not.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003eIf the unit is already open, compare the dimensions below with the part in your hand before ordering 15039-10. Check dimension a 12 mm, dimension b 46 mm against what you have removed; a close size is not the same part. Replacing a piston is a workshop job because the shim stack has to be rebuilt in the correct order. Piston bands are consumables — they wear against the bore and lose their seal gradually.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eÖhlins recommends that its units are serviced by an authorised centre. We are one: rebuild, revalve and setup all happen in our own workshop.\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 15039-10\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 12 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension B:\u003c\/em\u003e 46 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":53652267729162,"sku":"15039-10","price":1969.0,"currency_code":"MDL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/15039-10_6e868793-9e44-4e36-a91a-895c6054184d.png?v=1788878437","url":"https:\/\/inter-pace.com\/en-md\/products\/ohlins-piston-12-46-assy-15039-10","provider":"Inter-Pace","version":"1.0","type":"link"}