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Thumpstar BSF Expert 125

About

Our race entry bike for the 10 inch class aimed at the occasional racer or weekend warrior. It comes fitted with our uniquely designed Billeted Spinal Frame and a 125 cubic centimeter kick start motor that will start in any gear. It also has the four up transmission and new billeted hubs in a 10 inch rear and 12 inch front wheels. Ideal first time race bike or for those of you on a budget. It’s a great place to start and you can upgrade as you go along.

General Information
Year 2008
Type Mini-Bike
Frame Billeted alloy spinal (BSF)
Engine 1-cylinder, 4-stroke, horizontal
Displacement 123cc
Engine & Components
Engine 1-cylinder, 4-stroke, horizontal
Compression Ratio 9.0:1
Cooling Air
 
Cubic Centimeters 123
Bore and Stroke 54.4 x 57mm
Induction Mikuni Japan 20 to 24 mm
Electrical
Ignition CDI
Starting Kick
Drivetrain
Transmission 4-Speed Manual
Clutch Wet multi-plate
Performance
Max HP 9.45hp
Max Torque 6.3 ft. lbs. (8.6 Nm)