{"product_id":"royal-enfield-piston-ring-set-0040-oversize-350cc-bullet-electra-112054","title":"Genuine Royal Enfield Piston Ring Set +0.040\" O\/S (3 Rings) for Bullet 350 \/ Electra 4S–5S \/ Machismo \/ Campus | 112054","description":"\u003cp data-start=\"276\" data-end=\"532\"\u003eFor a proper 350cc top-end rebuild after a rebore, you must match ring size to the new bore. \u003cstrong data-start=\"369\" data-end=\"402\"\u003eRoyal Enfield Part No. 112054\u003c\/strong\u003e is listed as \u003cstrong data-start=\"416\" data-end=\"443\"\u003e“PISTON RING SET .040\"”\u003c\/strong\u003e, meaning \u003cstrong data-start=\"453\" data-end=\"483\"\u003e+0.040 inch oversize (O\/S)\u003c\/strong\u003e—not STD. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"534\" data-end=\"878\"\u003eThis ring set is commonly supplied as a \u003cstrong data-start=\"574\" data-end=\"592\"\u003eset of 3 rings\u003c\/strong\u003e and is intended for \u003cstrong data-start=\"613\" data-end=\"651\"\u003elegacy 350cc Bullet-family engines\u003c\/strong\u003e (confirmed models below).  Correct oversize rings help restore \u003cstrong data-start=\"752\" data-end=\"818\"\u003ecompression, cold starting, throttle response, and oil control\u003c\/strong\u003e, while reducing smoke caused by worn rings\/cylinder wear.\u003c\/p\u003e\n\u003cp data-start=\"880\" data-end=\"1302\"\u003eDo not order this unless your cylinder is actually rebored to \u003cstrong data-start=\"942\" data-end=\"956\"\u003e0.040” O\/S\u003c\/strong\u003e (verify with bore measurement or machinist bill). Using the wrong size is one of the biggest causes of repeat smoke, low compression, and premature wear. Dealer listings also show multiple oversize options in this family, so keep your listing strict and clearly labeled as \u003cstrong data-start=\"1230\" data-end=\"1243\"\u003e0.040 O\/S\u003c\/strong\u003e to reduce returns. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"1304\" data-end=\"1328\"\u003eKey Features \u003c\/h2\u003e\n\u003cul data-start=\"1329\" data-end=\"2005\"\u003e\n\u003cli data-start=\"1329\" data-end=\"1423\"\u003e\n\u003cp data-start=\"1331\" data-end=\"1423\"\u003e\u003cstrong data-start=\"1331\" data-end=\"1356\"\u003eGenuine Royal Enfield\u003c\/strong\u003e piston ring set (OEM-spec) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1424\" data-end=\"1451\"\u003e\n\u003cp data-start=\"1426\" data-end=\"1451\"\u003ePart Number: \u003cstrong data-start=\"1439\" data-end=\"1449\"\u003e112054\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1452\" data-end=\"1564\"\u003e\n\u003cp data-start=\"1454\" data-end=\"1564\"\u003eOfficial description: \u003cstrong data-start=\"1476\" data-end=\"1501\"\u003ePISTON RING SET .040\"\u003c\/strong\u003e (\u003cstrong data-start=\"1503\" data-end=\"1523\"\u003e+0.040\" oversize\u003c\/strong\u003e) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1565\" data-end=\"1653\"\u003e\n\u003cp data-start=\"1567\" data-end=\"1653\"\u003eCommonly supplied as \u003cstrong data-start=\"1588\" data-end=\"1613\"\u003eset of 3 piston rings\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1654\" data-end=\"1767\"\u003e\n\u003cp data-start=\"1656\" data-end=\"1767\"\u003eDesigned for \u003cstrong data-start=\"1669\" data-end=\"1685\"\u003elegacy 350cc\u003c\/strong\u003e Bullet-family platforms (confirmed below) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1768\" data-end=\"1849\"\u003e\n\u003cp data-start=\"1770\" data-end=\"1849\"\u003eHelps reduce \u003cstrong data-start=\"1783\" data-end=\"1809\"\u003eblue smoke\/oil burning\u003c\/strong\u003e and improves compression after rebore\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1850\" data-end=\"1922\"\u003e\n\u003cp data-start=\"1852\" data-end=\"1922\"\u003eBetter dimensional consistency vs many generic aftermarket ring sets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1923\" data-end=\"2005\"\u003e\n\u003cp data-start=\"1925\" data-end=\"2005\"\u003eRecommended: check \u003cstrong data-start=\"1944\" data-end=\"1960\"\u003ering end-gap\u003c\/strong\u003e and cylinder honing finish before assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"2007\" data-end=\"2048\"\u003eCompatibility Table \u003c\/h2\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"2050\" data-end=\"2784\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"2050\" data-end=\"2115\"\u003e\n\u003ctr data-start=\"2050\" data-end=\"2115\"\u003e\n\u003cth data-start=\"2050\" data-end=\"2058\" data-col-size=\"sm\"\u003eModel\u003c\/th\u003e\n\u003cth data-start=\"2058\" data-end=\"2078\" data-col-size=\"sm\"\u003eEngine \/ Platform\u003c\/th\u003e\n\u003cth data-start=\"2078\" data-end=\"2089\" data-col-size=\"sm\"\u003eBS Stage\u003c\/th\u003e\n\u003cth data-start=\"2089\" data-end=\"2097\" data-col-size=\"sm\"\u003eYears\u003c\/th\u003e\n\u003cth data-start=\"2097\" data-end=\"2115\" data-col-size=\"sm\"\u003eFitment Status\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"2140\" data-end=\"2784\"\u003e\n\u003ctr data-start=\"2140\" data-end=\"2250\"\u003e\n\u003ctd data-start=\"2140\" data-end=\"2162\" data-col-size=\"sm\"\u003eBullet 350 (legacy)\u003c\/td\u003e\n\u003ctd data-start=\"2162\" data-end=\"2184\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2184\" data-end=\"2188\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2188\" data-end=\"2207\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2207\" data-end=\"2250\" data-col-size=\"sm\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2251\" data-end=\"2352\"\u003e\n\u003ctd data-start=\"2251\" data-end=\"2264\" data-col-size=\"sm\"\u003eDeluxe 350\u003c\/td\u003e\n\u003ctd data-start=\"2264\" data-end=\"2286\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2286\" data-end=\"2290\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2290\" data-end=\"2309\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2309\" data-end=\"2352\" data-col-size=\"sm\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2353\" data-end=\"2456\"\u003e\n\u003ctd data-start=\"2353\" data-end=\"2368\" data-col-size=\"sm\"\u003eMachismo 350\u003c\/td\u003e\n\u003ctd data-start=\"2368\" data-end=\"2390\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2390\" data-end=\"2394\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2394\" data-end=\"2413\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2413\" data-end=\"2456\" data-col-size=\"sm\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2457\" data-end=\"2560\"\u003e\n\u003ctd data-start=\"2457\" data-end=\"2470\" data-col-size=\"sm\"\u003eCampus 350\u003c\/td\u003e\n\u003ctd data-start=\"2470\" data-end=\"2492\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2492\" data-end=\"2496\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2496\" data-end=\"2515\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2515\" data-end=\"2560\" data-col-size=\"sm\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2561\" data-end=\"2672\"\u003e\n\u003ctd data-start=\"2561\" data-end=\"2582\" data-col-size=\"sm\"\u003eElectra 4S (KS\/ES)\u003c\/td\u003e\n\u003ctd data-start=\"2582\" data-end=\"2604\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2604\" data-end=\"2608\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2608\" data-end=\"2627\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2627\" data-end=\"2672\" data-col-size=\"sm\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2673\" data-end=\"2784\"\u003e\n\u003ctd data-start=\"2673\" data-end=\"2694\" data-col-size=\"sm\"\u003eElectra 5S (KS\/ES)\u003c\/td\u003e\n\u003ctd data-start=\"2694\" data-end=\"2716\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2716\" data-end=\"2720\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2720\" data-end=\"2739\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2739\" data-end=\"2784\" data-col-size=\"sm\"\u003e\n\u003cbr\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"2786\" data-end=\"3008\"\u003e\u003cstrong data-start=\"2786\" data-end=\"2831\"\u003eExplicit exclusions (avoid wrong orders):\u003c\/strong\u003e UCE (Classic\/Bullet\/Thunderbird UCE), J-Series (Classic Reborn\/Hunter\/Meteor\/Bullet J), 650 Twins, Himalayan\/Scram—unless you have microfiche\/VIN proof for your exact platform.\u003c\/p\u003e\n\u003ch2 data-start=\"3010\" data-end=\"3023\"\u003eVariants\u003c\/h2\u003e\n\u003cul data-start=\"3024\" data-end=\"3200\"\u003e\n\u003cli data-start=\"3024\" data-end=\"3200\"\u003e\n\u003cp data-start=\"3026\" data-end=\"3200\"\u003e\u003cstrong data-start=\"3026\" data-end=\"3052\"\u003eOnly one variant here:\u003c\/strong\u003e \u003cstrong data-start=\"3053\" data-end=\"3068\"\u003e+0.040\" O\/S\u003c\/strong\u003e – \u003cstrong data-start=\"3071\" data-end=\"3081\"\u003e112054\u003c\/strong\u003e \u003cbr data-start=\"3121\" data-end=\"3124\"\u003e(Keep STD and other oversizes as separate SKUs\/listings to prevent returns.)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"3202\" data-end=\"3217\"\u003eFAQs \u003c\/h2\u003e\n\u003cp data-start=\"3218\" data-end=\"3413\"\u003e\u003cstrong data-start=\"3218\" data-end=\"3262\"\u003eQ1. What does “.040\" \/ +0.040 O\/S” mean?\u003c\/strong\u003e\u003cbr data-start=\"3262\" data-end=\"3265\"\u003eIt means the cylinder is rebored \u003cstrong data-start=\"3298\" data-end=\"3321\"\u003e0.040 inch oversize\u003c\/strong\u003e, and these rings are sized for that bore—not STD. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3415\" data-end=\"3589\"\u003e\u003cstrong data-start=\"3415\" data-end=\"3451\"\u003eQ2. How many rings are included?\u003c\/strong\u003e\u003cbr data-start=\"3451\" data-end=\"3454\"\u003eDealer descriptions commonly specify a \u003cstrong data-start=\"3493\" data-end=\"3518\"\u003eset of 3 piston rings\u003c\/strong\u003e for this 350cc oversize set. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3591\" data-end=\"3830\"\u003e\u003cstrong data-start=\"3591\" data-end=\"3664\"\u003eQ3. Will 112054 fit Classic 350 UCE or Classic 350 Reborn (J-Series)?\u003c\/strong\u003e\u003cbr data-start=\"3664\" data-end=\"3667\"\u003eNot confirmed. This part number is documented for \u003cstrong data-start=\"3717\" data-end=\"3769\"\u003elegacy Bullet\/Electra\/Machismo\/Campus 350 family\u003c\/strong\u003e applications only. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3832\" data-end=\"4052\"\u003e\u003cstrong data-start=\"3832\" data-end=\"3885\"\u003eQ4. My bike is smoking—should I buy +0.040 rings?\u003c\/strong\u003e\u003cbr data-start=\"3885\" data-end=\"3888\"\u003eOnly if the cylinder is already rebored to \u003cstrong data-start=\"3931\" data-end=\"3942\"\u003e+0.040”\u003c\/strong\u003e. If your bore is STD or +0.020, you must use the correct ring size. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"4054\" data-end=\"4221\"\u003e\u003cstrong data-start=\"4054\" data-end=\"4111\"\u003eQ5. What else should be replaced during installation?\u003c\/strong\u003e\u003cbr data-start=\"4111\" data-end=\"4114\"\u003eTop-end gasket set, verify piston condition, hone cylinder, and measure ring end-gap before final assembly.\u003c\/p\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50874017743143,"sku":null,"price":280.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/ChatGPT_Image_Dec_2_2025_10_22_57_PM.png?v=1776599055","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-piston-ring-set-0040-oversize-350cc-bullet-electra-112054","provider":"UNDER THE HOOD","version":"1.0","type":"link"}