{"product_id":"ohlins-piston-ring-28-30-4-9-04798-01","title":"Öhlins Piston ring 28\/30\/4.9 – 04798-01","description":"\u003cp\u003ePiston ring 28\/30\/4.9, Öhlins part number 04798-01. Öhlins uses a piston band rather than metal-to-metal contact, which is what keeps the bore intact.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins part number 04798-01\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eDimension B 30 mm\u003c\/li\u003e\n\u003cli\u003eDimension A 28 mm\u003c\/li\u003e\n\u003cli\u003eDimension C 4.9 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Is\u003c\/h2\u003e\u003cp\u003eAt 28 mm, 30 mm, 4.9 mm it fits one position only; the next size up carries a different number. The seat face has to be flat enough for the first shim to seal against it. Jets meter fixed bleed flow and are sized in tenths of a millimetre. A worn band lets oil past the outside of the piston, which feels like damping that has gone soft.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eThis is an original Öhlins part, not an aftermarket equivalent — the tolerances are the ones the unit was assembled to. Öhlins numbers every position so a workshop can order precisely what it needs, not a whole assembly. The exploded drawing for your unit names the number; if you do not have it, we do. Send us the model and serial number of your unit and we will confirm the position before you order.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003eThe reliable route is the exploded drawing: find the position, read the number, order it — 04798-01 in this case. The published dimensions are dimension a 28 mm, dimension b 30 mm, dimension c 4.9 mm — measure the old part against them if you are unsure. Jets meter fixed bleed flow and are sized in tenths of a millimetre. A check valve holds pressure in one direction and opens in the other; a worn one lets damping bleed away.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eA damper rebuild is workshop work: it needs the unit dismantled, the shim stack rebuilt in the correct order and the gas charge reset. We are an authorised Öhlins service centre and do exactly that in house — send us the unit or ask us to fit the part with your order.\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 04798-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Piston Bands\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension A:\u003c\/em\u003e 28 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension B:\u003c\/em\u003e 30 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension C:\u003c\/em\u003e 4.9 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":53649572790538,"sku":"04798-01","price":22.39,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/04798-01_59cd46db-9eb1-463d-9dfa-12bb541bfa57.png?v=1788876090","url":"https:\/\/inter-pace.com\/en-na\/products\/ohlins-piston-ring-28-30-4-9-04798-01","provider":"Inter-Pace","version":"1.0","type":"link"}