{"product_id":"ohlins-shims-20-30-0-38-03309-02","title":"Öhlins Shims 20\/30\/0.38 – 03309-02","description":"\u003cp\u003eShims 20\/30\/0.38, Öhlins part number 03309-02. Suspension technicians keep these in stock by size because a revalve means changing several at once.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInner Diameter 20 mm\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eOuter Diameter 30 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 03309-02\u003c\/li\u003e\n\u003cli\u003eThickness 0.38 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eThis one measures 20 mm, 30 mm, 0.38 mm, and those figures are what separate it from the neighbouring numbers. A shim is a thin steel washer, and a stack of them is what actually generates damping in an Öhlins unit — the oil has to bend them out of the way to pass. Öhlins grinds shims to a flatness tolerance because the faces have to seal against each other. Öhlins stamps and grinds its shims to tolerances a general-purpose washer never holds.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eThe part number is the contract: it defines material, dimension and finish together. Öhlins supports its suspension with individual service parts, which is why a fifteen-year-old damper can still be rebuilt to specification. 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. For a full rebuild, the seal kit plus the wear parts is usually the sensible order.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003ePart number 03309-02 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. The published dimensions are inner diameter 20 mm, outer diameter 30 mm, thickness 0.38 mm — measure the old part against them if you are unsure. Outer diameter sets the lever the oil works against; thickness sets how hard it resists. Outer diameter sets the lever the oil works against, and thickness sets the resistance.\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 03309-02\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Shims\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 20 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eOuter Diameter:\u003c\/em\u003e 30 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eThickness:\u003c\/em\u003e 0.38 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":53649312743690,"sku":"03309-02","price":300.0,"currency_code":"ISK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/03309-02_72450d61-fea4-4873-809b-7b6d356b578a.png?v=1788874778","url":"https:\/\/inter-pace.com\/en-is\/products\/ohlins-shims-20-30-0-38-03309-02","provider":"Inter-Pace","version":"1.0","type":"link"}