{"product_id":"universal-parts-tb60-big-bore-kit-169-185","title":"Universal Parts TB60 60cc Big Bore Kit: Suzuki \u0026 Qingqi 2T","description":"\u003ch2\u003eUnlock Hidden Power: TB60 60cc Big Bore Cylinder Kit\u003c\/h2\u003e\u003cp\u003eTransform your 50cc commuter into a more capable machine with the \u003cstrong\u003eUniversal Parts TB60 Big Bore Kit\u003c\/strong\u003e. Engineered specifically for the TB50 (1DE41QMB) engine platform, this kit increases your displacement to approximately 60cc. This boost in volume provides a noticeable increase in low-end torque and mid-range acceleration, making it easier to maintain speed on hills and keep up with modern city traffic.\u003c\/p\u003e\u003ch3\u003eTechnical Performance Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncreased 43mm Bore:\u003c\/strong\u003e Larger than the factory 41mm cylinder, this kit provides a significant bump in displacement for improved power across the entire RPM range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Port Timing:\u003c\/strong\u003e The cylinder casting features revised intake and exhaust ports designed to maximize the scavenging efficiency of the 2-stroke cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Aluminum Piston:\u003c\/strong\u003e Includes a lightweight 43mm piston with a 10mm wrist pin, designed to reduce reciprocating mass for a smoother, higher-revving engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Top-End Solution:\u003c\/strong\u003e Comes ready for installation with the cylinder, piston, rings, wrist pin, and circlips—everything you need to refresh your top end.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eComprehensive Fitment Guide\u003c\/h3\u003e\u003cp\u003eThis kit is designed for \u003cstrong\u003eSuzuki-licensed TB50 \/ 1DE41QMB\u003c\/strong\u003e 2-stroke engines. Please verify your piston pin size (10mm) before ordering:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eBrand\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eCommon Compatible Models\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuzuki\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelect 50cc 2-Stroke Scooter Models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQingqi\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQM50QT-B2, Mulan, and various TB50 clones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGeely\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelect 50cc 2-stroke models using the 1DE41QMB engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Bore:\u003c\/strong\u003e 43mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Cylinder Height:\u003c\/strong\u003e 81.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston Pin Diameter:\u003c\/strong\u003e 10mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston Compression Height:\u003c\/strong\u003e 21.5mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eRegulatory Notice\u003c\/h3\u003e\u003ch3 style=\"color: #983d3c;\"\u003eThis product is not intended for use on public roads or land.\u003c\/h3\u003e\u003chr\u003e\u003cblockquote\u003e\n\u003cstrong\u003eMechanic's Note:\u003c\/strong\u003e This is a \"TB50\" style kit. It will NOT fit standard Minarelli (Jog) or Morini engines. \u003cstrong\u003ePro Tip:\u003c\/strong\u003e When installing a Big Bore Kit, you MUST increase your \u003cstrong\u003e\u003ca href=\"https:\/\/www.scooterworks.com\"\u003eCarburetor Main Jet\u003c\/a\u003e\u003c\/strong\u003e size to account for the increased air and fuel demand. Running a big bore kit with factory jetting can lead to a lean condition and engine seizure!\u003c\/blockquote\u003e\u003cp style=\"font-size: 0.85em; color: #666;\"\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e 169-185 \u003cbr\u003e\u003cstrong\u003eMPN:\u003c\/strong\u003e 2381 \u003cbr\u003e\u003cstrong\u003eVendor:\u003c\/strong\u003e Universal Parts\u003c\/p\u003e","brand":"Universal Parts","offers":[{"title":"Default Title","offer_id":49986071658776,"sku":"169-185","price":52.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/169-185.webp?v=1774890544","url":"https:\/\/www.scooterworks.com\/products\/universal-parts-tb60-big-bore-kit-169-185","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}