{"product_id":"ohlins-check-valve-dia-6-3-1-4-05402-04","title":"Öhlins Check valve dia. 6.3\/1.4 – 05402-04","description":"\u003cp\u003eCheck valve dia. 6.3\/1.4, Öhlins part number 05402-04. Replacing a piston is a workshop job because the shim stack has to be rebuilt in the correct order.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eDimension A 6.3 mm\u003c\/li\u003e\n\u003cli\u003eDimension B 1.4 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 05402-04\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003e05402-04 is the 6.3 mm, 1.4 mm version — Öhlins lists each size separately. Öhlins uses a piston band rather than metal-to-metal contact, which is what keeps the bore intact. Piston bands are consumables — they wear against the bore and lose their seal gradually. Port area sets how much oil can pass before the shims begin to lift.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eRebuilding to specification only works if the parts are to specification — that starts here. The part number is the contract: it defines material, dimension and finish together. Order by part number. The dimensions below are the ones Öhlins publishes for it. Service parts are ordered per piece unless stated otherwise.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003eÖhlins identifies this position by the number 05402-04 in the exploded view for the unit it belongs to. The published dimensions are dimension a 6.3 mm, dimension b 1.4 mm — measure the old part against them if you are unsure. Port area and shim seat geometry decide the damping curve before any adjuster is touched. 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\u003eFitting service parts means opening a pressurised unit. As an authorised Öhlins service centre we do that here, with the right tools and a dyno check afterwards — just ask.\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 05402-04\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Check Valves\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension A:\u003c\/em\u003e 6.3 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension B:\u003c\/em\u003e 1.4 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":53649165680906,"sku":"05402-04","price":9.79,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/05402-04_4e20d2fa-8a72-4236-a29b-d5ceb239bc34.png?v=1788874067","url":"https:\/\/inter-pace.com\/products\/ohlins-check-valve-dia-6-3-1-4-05402-04","provider":"Inter-Pace","version":"1.0","type":"link"}