{"product_id":"46mm-cylinder-piston-kit-for-stihl-ms280-ms280c-ms270-ms270c-1133-020-1203","title":"46mm Cylinder Piston Kit for Stihl MS280 MS280C MS270 MS270C 1133 020 1203","description":"46mm cylinder and piston kit for the Stihl MS270 and MS280. New.\u003cbr\u003e\u003cbr\u003eBore: 46mm\u003cbr\u003eReplaces: 1133 020 1203, 1133 020 1202, 11330201203, 11330201202\u003cbr\u003eCylinder has a threaded hole on top for a decompression valve\u003cbr\u003e\u003cbr\u003eFitment\u003cbr\u003eStihl MS280 and MS280C, standard replacement. The MS280 is a 46mm bore saw, so this is a direct stock replacement.\u003cbr\u003eStihl MS270 and MS270C, big bore upgrade. The MS270 is a 44mm bore saw at roughly 50cc. Fitting this 46mm kit takes it to roughly 54cc, essentially MS280 displacement.\u003cbr\u003e\u003cbr\u003eIf you have an MS270 and want it back to stock, you need the 44mm kit, part number 1133 020 1200. This 46mm kit will make more power but it is a modification, not a stock rebuild.\u003cbr\u003e\u003cbr\u003eMS270 owners: this kit is set up for saws with a decompression valve. Check whether yours has one before ordering.\u003cbr\u003e\u003cbr\u003eIncluded: cylinder, piston, piston pin, piston ring, and circlips.\u003cbr\u003e\u003cbr\u003eBefore you rebuild, find out why the old top end failed. Scoring on the intake side usually means an air leak, so check the crank seals, the intake boot and the impulse line before you assemble. A new cylinder installed on a saw with an unresolved air leak will fail the same way.\u003cbr\u003e\u003cbr\u003eClean the crankcase thoroughly. Any debris left from the old piston will destroy the new one.\u003cbr\u003e\u003cbr\u003eADDITIONAL INFORMATION FOR VERIFICATION: \u003cbr\u003eType: Cylinder Piston Kit\u003cbr\u003eBore Size: 46mm\u003cbr\u003eManufacturer Part Number: 1133 020 1203\u003cbr\u003eInterchange Part Number: 1133 020 1202, 11330201203, 11330201202\u003cbr\u003eCompatible Brand: For Stihl\u003cbr\u003eCompatible Model: MS270, MS270C, MS280, MS280C\u003cbr\u003eEquipment Type: Chainsaw\u003cbr\u003eItems Included: Cylinder, Piston, Piston Pin, Piston Ring, Circlips\u003cbr\u003eDecompression Valve Port: Yes\u003cbr\u003eCountry of Origin: China\u003cbr\u003eCondition: New","brand":"GIOONG","offers":[{"title":"Default Title","offer_id":45815271751859,"sku":"A-0033","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/1356\/4339\/files\/2ffca8a4-fe23-4661-8de4-e70633508706.jpg?v=1786471194","url":"https:\/\/aski.deals\/products\/46mm-cylinder-piston-kit-for-stihl-ms280-ms280c-ms270-ms270c-1133-020-1203","provider":"ASKI Deals","version":"1.0","type":"link"}