Universal Parts TB60 60cc Big Bore Kit: Suzuki & Qingqi 2T

Unlock Hidden Power: TB60 60cc Big Bore Cylinder Kit Transform your 50cc commuter into a more capable machine with the Universal Parts TB60 Big Bore Kit . 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. Technical Performance Features Increased 43mm Bore: Larger than the factory 41mm cylinder, this kit provides a significant bump in displacement for improved power across the entire RPM range. Optimized Port Timing: The cylinder casting features revised intake and exhaust ports designed to maximize the scavenging efficiency of the 2-stroke cycle. Precision Aluminum Piston: Includes a lightweight 43mm piston with a 10mm wrist pin, designed to reduce reciprocating mass for a smoother, higher-revving engine. Complete Top-End Solution: Comes ready for installation with the cylinder, piston, rings, wrist pin, and circlips—everything you need to refresh your top end. Comprehensive Fitment Guide This kit is designed for Suzuki-licensed TB50 / 1DE41QMB 2-stroke engines. Please verify your piston pin size (10mm) before ordering: Brand Common Compatible Models Suzuki Select 50cc 2-Stroke Scooter Models Qingqi QM50QT-B2, Mulan, and various TB50 clones Geely Select 50cc 2-stroke models using the 1DE41QMB engine Technical Specifications Cylinder Bore: 43mm Overall Cylinder Height: 81.5mm Piston Pin Diameter: 10mm Piston Compression Height: 21.5mm Regulatory Notice This product is not intended for use on public roads or land. Mechanic's Note: This is a "TB50" style kit. It will NOT fit standard Minarelli (Jog) or Morini engines. Pro Tip: When installing a Big Bore Kit, you MUST increase your Carburetor Main Jet 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! SKU: 169-185 MPN: 2381 Vendor: Universal Parts