{"product_id":"royal-enfield-piston-ring-set-0020-oversize-350cc-bullet-electra-112053","title":"Genuine Royal Enfield Piston Ring Set +0.020\" O\/S (3-Ring Set) for Bullet 350 \/ Electra 4S–5S \/ Machismo \/ Campus | 112053","description":"\u003cp data-start=\"279\" data-end=\"628\"\u003eRebuilding a smoky or low-compression Royal Enfield 350 top-end after a rebore requires the correct oversize rings—\u003cstrong data-start=\"394\" data-end=\"405\"\u003enot STD\u003c\/strong\u003e. \u003cstrong data-start=\"407\" data-end=\"440\"\u003eRoyal Enfield Part No. 112053\u003c\/strong\u003e is listed as \u003cstrong data-start=\"454\" data-end=\"481\"\u003e“PISTON RING SET 020''”\u003c\/strong\u003e, i.e., \u003cstrong data-start=\"489\" data-end=\"509\"\u003e+0.020\" oversize\u003c\/strong\u003e ring set, supplied as a \u003cstrong data-start=\"534\" data-end=\"548\"\u003e3-ring set\u003c\/strong\u003e for legacy 350cc Bullet-family engines. \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=\"630\" data-end=\"1004\"\u003eChoose this when your cylinder has been rebored to \u003cstrong data-start=\"681\" data-end=\"695\"\u003e0.020\" O\/S\u003c\/strong\u003e and you need proper sealing to restore \u003cstrong data-start=\"735\" data-end=\"771\"\u003ecompression, starting, and power\u003c\/strong\u003e while controlling oil consumption. Correct ring sizing is critical for ring end-gap, heat transfer, and cylinder life—generic rings often lead to poor bedding-in, repeat smoke, or uneven wear. \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=\"1006\" data-end=\"1401\"\u003eFitment is restricted to the models confirmed by dealer sources below. Before ordering, verify your rebore size (invoice from machinist or bore measurement). If your engine is still STD, use the STD ring set instead (different part number). This listing is written to reduce wrong orders and returns by clearly stating oversize and confirmed applications. \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=\"1403\" data-end=\"1427\"\u003eKey Features \u003c\/h2\u003e\n\u003cul data-start=\"1428\" data-end=\"2102\"\u003e\n\u003cli data-start=\"1428\" data-end=\"1515\"\u003e\n\u003cp data-start=\"1430\" data-end=\"1515\"\u003e\u003cstrong data-start=\"1430\" data-end=\"1455\"\u003eGenuine Royal Enfield\u003c\/strong\u003e 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=\"1516\" data-end=\"1543\"\u003e\n\u003cp data-start=\"1518\" data-end=\"1543\"\u003ePart Number: \u003cstrong data-start=\"1531\" data-end=\"1541\"\u003e112053\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1544\" data-end=\"1652\"\u003e\n\u003cp data-start=\"1546\" data-end=\"1652\"\u003eListed description: \u003cstrong data-start=\"1566\" data-end=\"1612\"\u003e“PISTON RING SET 020''” = +0.020\" 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=\"1653\" data-end=\"1741\"\u003e\n\u003cp data-start=\"1655\" data-end=\"1741\"\u003eCommonly supplied as \u003cstrong data-start=\"1676\" data-end=\"1701\"\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=\"1742\" data-end=\"1860\"\u003e\n\u003cp data-start=\"1744\" data-end=\"1860\"\u003eDesigned for \u003cstrong data-start=\"1757\" data-end=\"1773\"\u003elegacy 350cc\u003c\/strong\u003e Bullet-family engines (confirmed models 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=\"1861\" data-end=\"1942\"\u003e\n\u003cp data-start=\"1863\" data-end=\"1942\"\u003eHelps restore \u003cstrong data-start=\"1877\" data-end=\"1892\"\u003ecompression\u003c\/strong\u003e and reduce \u003cstrong data-start=\"1904\" data-end=\"1925\"\u003esmoke\/oil burning\u003c\/strong\u003e after a rebore\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1943\" data-end=\"2019\"\u003e\n\u003cp data-start=\"1945\" data-end=\"2019\"\u003eBetter dimensional consistency vs many aftermarket “universal” ring sets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2020\" data-end=\"2102\"\u003e\n\u003cp data-start=\"2022\" data-end=\"2102\"\u003eRecommended: check \u003cstrong data-start=\"2041\" data-end=\"2057\"\u003ering end-gap\u003c\/strong\u003e and cylinder finish (hone) before assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"2104\" data-end=\"2145\"\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=\"2147\" data-end=\"3093\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"2147\" data-end=\"2212\"\u003e\n\u003ctr data-start=\"2147\" data-end=\"2212\"\u003e\n\u003cth data-start=\"2147\" data-end=\"2155\" data-col-size=\"sm\"\u003eModel\u003c\/th\u003e\n\u003cth data-start=\"2155\" data-end=\"2175\" data-col-size=\"sm\"\u003eEngine \/ Platform\u003c\/th\u003e\n\u003cth data-start=\"2175\" data-end=\"2186\" data-col-size=\"sm\"\u003eBS Stage\u003c\/th\u003e\n\u003cth data-start=\"2186\" data-end=\"2194\" data-col-size=\"sm\"\u003eYears\u003c\/th\u003e\n\u003cth data-start=\"2194\" data-end=\"2212\" data-col-size=\"sm\"\u003eFitment Status\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"2237\" data-end=\"3093\"\u003e\n\u003ctr data-start=\"2237\" data-end=\"2347\"\u003e\n\u003ctd data-start=\"2237\" data-end=\"2259\" data-col-size=\"sm\"\u003eBullet 350 (legacy)\u003c\/td\u003e\n\u003ctd data-start=\"2259\" data-end=\"2281\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2281\" data-end=\"2285\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2285\" data-end=\"2304\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2304\" data-end=\"2347\" 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=\"2348\" data-end=\"2449\"\u003e\n\u003ctd data-start=\"2348\" data-end=\"2361\" data-col-size=\"sm\"\u003eDeluxe 350\u003c\/td\u003e\n\u003ctd data-start=\"2361\" data-end=\"2383\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2383\" data-end=\"2387\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2387\" data-end=\"2406\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2406\" data-end=\"2449\" 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=\"2450\" data-end=\"2553\"\u003e\n\u003ctd data-start=\"2450\" data-end=\"2465\" data-col-size=\"sm\"\u003eMachismo 350\u003c\/td\u003e\n\u003ctd data-start=\"2465\" data-end=\"2487\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2487\" data-end=\"2491\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2491\" data-end=\"2510\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2510\" data-end=\"2553\" 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=\"2554\" data-end=\"2657\"\u003e\n\u003ctd data-start=\"2554\" data-end=\"2567\" data-col-size=\"sm\"\u003eCampus 350\u003c\/td\u003e\n\u003ctd data-start=\"2567\" data-end=\"2589\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2589\" data-end=\"2593\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2593\" data-end=\"2612\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2612\" data-end=\"2657\" 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=\"2658\" data-end=\"2766\"\u003e\n\u003ctd data-start=\"2658\" data-end=\"2676\" data-col-size=\"sm\"\u003eElectra 4S (KS)\u003c\/td\u003e\n\u003ctd data-start=\"2676\" data-end=\"2698\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2698\" data-end=\"2702\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2702\" data-end=\"2721\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2721\" data-end=\"2766\" 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=\"2767\" data-end=\"2875\"\u003e\n\u003ctd data-start=\"2767\" data-end=\"2785\" data-col-size=\"sm\"\u003eElectra 4S (ES)\u003c\/td\u003e\n\u003ctd data-start=\"2785\" data-end=\"2807\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2807\" data-end=\"2811\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2811\" data-end=\"2830\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2830\" data-end=\"2875\" 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=\"2876\" data-end=\"2984\"\u003e\n\u003ctd data-start=\"2876\" data-end=\"2894\" data-col-size=\"sm\"\u003eElectra 5S (KS)\u003c\/td\u003e\n\u003ctd data-start=\"2894\" data-end=\"2916\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"2916\" data-end=\"2920\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2920\" data-end=\"2939\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"2939\" data-end=\"2984\" 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=\"2985\" data-end=\"3093\"\u003e\n\u003ctd data-start=\"2985\" data-end=\"3003\" data-col-size=\"sm\"\u003eElectra 5S (ES)\u003c\/td\u003e\n\u003ctd data-start=\"3003\" data-end=\"3025\" data-col-size=\"sm\"\u003eLegacy 350 platform\u003c\/td\u003e\n\u003ctd data-start=\"3025\" data-end=\"3029\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"3029\" data-end=\"3048\" data-col-size=\"sm\"\u003e(family listing)\u003c\/td\u003e\n\u003ctd data-start=\"3048\" data-end=\"3093\" 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=\"3095\" data-end=\"3316\"\u003e\u003cstrong data-start=\"3095\" data-end=\"3145\"\u003eExplicit exclusions (to prevent wrong orders):\u003c\/strong\u003e UCE Classic\/Bullet\/Thunderbird, 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=\"3318\" data-end=\"3331\"\u003eVariants\u003c\/h2\u003e\n\u003cul data-start=\"3332\" data-end=\"3587\"\u003e\n\u003cli data-start=\"3332\" data-end=\"3587\"\u003e\n\u003cp data-start=\"3334\" data-end=\"3587\"\u003e\u003cstrong data-start=\"3334\" data-end=\"3360\"\u003eOnly one variant here:\u003c\/strong\u003e \u003cstrong data-start=\"3361\" data-end=\"3376\"\u003e+0.020\" O\/S\u003c\/strong\u003e – Part No. \u003cstrong data-start=\"3388\" data-end=\"3398\"\u003e112053\u003c\/strong\u003e \u003cbr data-start=\"3438\" data-end=\"3441\"\u003e(If you also sell STD or +0.040\", keep separate listings to avoid returns; competitors often mix sizes.) \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\u003c\/ul\u003e\n\u003ch2 data-start=\"3589\" data-end=\"3604\"\u003eFAQs \u003c\/h2\u003e\n\u003cp data-start=\"3605\" data-end=\"3781\"\u003e\u003cstrong data-start=\"3605\" data-end=\"3649\"\u003eQ1. What does “020'' \/ +0.020 O\/S” mean?\u003c\/strong\u003e\u003cbr data-start=\"3649\" data-end=\"3652\"\u003eIt means the rings are for a cylinder rebored \u003cstrong data-start=\"3698\" data-end=\"3721\"\u003e0.020 inch oversize\u003c\/strong\u003e. This is 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=\"3783\" data-end=\"3976\"\u003e\u003cstrong data-start=\"3783\" data-end=\"3829\"\u003eQ2. How many rings are included in 112053?\u003c\/strong\u003e\u003cbr data-start=\"3829\" data-end=\"3832\"\u003eDealer listings commonly specify this as a \u003cstrong data-start=\"3875\" data-end=\"3900\"\u003eset of 3 piston rings\u003c\/strong\u003e for the legacy 350 engine family. \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=\"3978\" data-end=\"4209\"\u003e\u003cstrong data-start=\"3978\" data-end=\"4047\"\u003eQ3. Will it fit Classic 350 UCE or Classic 350 Reborn (J-Series)?\u003c\/strong\u003e\u003cbr data-start=\"4047\" data-end=\"4050\"\u003eNot confirmed. This part number is listed for \u003cstrong data-start=\"4096\" data-end=\"4141\"\u003elegacy Bullet\/Electra\/Machismo\/Campus 350\u003c\/strong\u003e family 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=\"4211\" data-end=\"4435\"\u003e\u003cstrong data-start=\"4211\" data-end=\"4256\"\u003eQ4. My bike is smoking—should I buy this?\u003c\/strong\u003e\u003cbr data-start=\"4256\" data-end=\"4259\"\u003eOnly if your cylinder is already rebored to \u003cstrong data-start=\"4303\" data-end=\"4314\"\u003e+0.020\"\u003c\/strong\u003e. If your bore is STD or a different oversize, you need the matching 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=\"4437\" data-end=\"4609\"\u003e\u003cstrong data-start=\"4437\" data-end=\"4484\"\u003eQ5. What should I replace along with rings?\u003c\/strong\u003e\u003cbr data-start=\"4484\" data-end=\"4487\"\u003eBest practice: top-end gasket set, inspect piston condition, hone cylinder, and verify ring end-gap before final assembly.\u003c\/p\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50874032161063,"sku":null,"price":245.0,"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-0020-oversize-350cc-bullet-electra-112053","provider":"UNDER THE HOOD","version":"1.0","type":"link"}