The X-Can / Torque Box is a great upgrade for more torque and top speed.
This performance exhaust has a much larger port than the stock exhaust and has no restriction plates or baffles inside allowing the sound waves and exhaust to deliver more power!
X-Can / Torque Box Performance Exhaust
This exhaust will bolt on to any 43cc to 52cc 2-stroke chinese engine. It will work on these known brand names: UberScoot/Evos, ScooterX, MotoTec, X-treme, Star 2, Boreem, G-scooter, Black Widow. Or just measure your mounting bolt hole spacing: 40mm or 1.578" center to center.