Cylinder kit Stage6 Streetrace 70cc 12mm – CPI / China 2T AC

Description

The Stage6 Streetrace 70cc is a powerful cast iron cylinder kit for scooters with CPI or China 2-stroke AC (air-cooled) engines. It is a more affordable version of the popular Stage6 Sport Pro aluminum cylinder, offering an excellent balance of performance, reliability, and durability for everyday use.

The transfer port design is very similar to the more powerful Sport Pro kit, but adapted for optimal performance of a cast iron cylinder and improved heat dissipation. The cylinder is manufactured in Taiwan (Made in TW) and equipped with a high-quality piston from the renowned Italian manufacturer Vertex Pistons.

The power curve is very similar to the Sport Pro model – the cylinder offers excellent acceleration and strong torque, while the final power is approximately 0.5 HP lower. It reaches peak power at around 10,000 rpm, with real performance ranging between 8 and 11 HP.

For optimal results, we recommend using a larger carburetor and a sport or racing exhaust. A great combination is the Stage6 Pro Replica exhaust, while the cylinder also performs very well with more discreet exhausts such as the Tecnigas Silent Pro.

Kit contents:
• cast iron 70cc cylinder (47 mm bore)
• piston with two piston rings – 12 mm piston pin
• aluminum cylinder head with high compression ratio
• gasket set

Installation recommendations:
Before installing the new cylinder, we recommend thoroughly cleaning the engine and replacing the spark plug and piston needle bearing. After installation, carburetor adjustment may also be required for optimal performance.