Description
The TSC 140 B4 is Thumpstar’s entry into the aggressive 140cc pit bike segment, offering a blend of rugged performance, lightweight handling, and clean styling. Powered by a 140cc HS 4-stroke motor and paired with a PE22 carburetor, this unit delivers torque-rich acceleration through its 4-speed manual transmission (N1234).
The kick-start-only setup keeps things simple and reliable, while the 28mm exhaust system provides a crisp, throaty note. Whether you’re tearing up trails or practicing in the backyard, the 140 B4 gives you dependable control thanks to its conventional 630mm forks up front and a 285mm mono rear shock.
The 31-inch seat height makes this bike suitable for teens and adults alike, while the disc brakes front and rear ensure stopping power matches the performance. Durable steel rims with a rim lock in the rear help maintain traction even during aggressive riding.
key features
- 140cc HS 4-stroke engine
- Manual 4-speed gearbox (N1234)
- PE 22mm carburetor for reliable power delivery
- Kick start for simplicity and weight savings
- Steel 14” front / 12” rear wheels with rim lock
- Disc brakes front and rear
- Top speed: 55mph (depending on gearing)
- Perfect for teens & adults stepping up to mid-size dirt bikes
- Great balance of speed, weight, and agility
The price shown is the Manufacturer’s Suggested Retail Price (MSRP) and does not include freight and setup fees, government sales tax, title and registration fees, tire and battery fees, or tag fees. Additional charges may apply. Please contact us for a complete out-the-door price. These vehicles are designed for off-road or recreational use. Local laws may restrict use on public roads.
Check your local regulations before operating any vehicle purchased from Jaguar Powersports.




