{"product_id":"ohlins-piston-17-5-m12-left-34-03604-02","title":"Öhlins Piston 17.5\/M12-left\/34 – 03604-02","description":"\u003cp\u003ePiston 17.5\/M12-left\/34, Öhlins part number 03604-02. 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\u003eThread M12\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 03604-02\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eÖhlins publishes thread M12 for 03604-02 — the dimensions are the identity of the part. Öhlins machines its pistons so the port edges stay sharp and the flow predictable. A worn piston band lets oil past the outside of the piston, which shows up as damping that has gone soft. The seat face has to be flat enough for the first shim to seal against it.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eÖhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. Suspension is one of the few areas where the original part is genuinely the cheaper decision. Where a number has been superseded, Öhlins states the replacement — we pass that on. Tell us the damper's model designation and year and we will match the number for you.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003eÖhlins identifies this position by the number 03604-02 in the exploded view for the unit it belongs to. The thread is M12. A check valve holds pressure in one direction and opens in the other; a worn one lets damping bleed away. A worn piston band lets oil past the outside of the piston, which shows up as damping that has gone soft.\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 03604-02\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Pistons\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eThread:\u003c\/em\u003e M12\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":53649340006666,"sku":"03604-02","price":13.3,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/03604-02_b8303710-01dc-4ced-8469-6413ac69f287.png?v=1788874931","url":"https:\/\/inter-pace.com\/en-ge\/products\/ohlins-piston-17-5-m12-left-34-03604-02","provider":"Inter-Pace","version":"1.0","type":"link"}