Polini Cast Iron Racing 70cc Corsa Cylinder Kit

Honda • Kymco • SYM Vertical (Standing) GR1 2-Stroke Engines

Upgrade your 50cc vertical 2-stroke scooter with the legendary Polini Corsa 70cc Cast Iron Racing Cylinder Kit. Designed and manufactured in Italy, the Corsa series delivers outstanding performance while maintaining the durability required for everyday street riding. Positioned between Polini's Sport and Evolution racing cylinders, the Corsa offers excellent acceleration, stronger mid-range torque, and higher top-end power without sacrificing reliability.

Product Specifications

• Brand: Polini
• Series: Corsa Racing
• Part Number: 119.0077/R
• Engine Type: Vertical (Standing) GR1 Air-Cooled 2-Stroke
• Displacement: 70cc
• Cylinder Bore: 47mm
• Cylinder Material: Premium Cast Iron
• High-Compression Aluminum Cylinder Head
• Lightweight Aluminum Racing Piston
• Two Piston Rings
• 12mm Wrist Pin
• Air-Cooled Design
• Made in Italy

Package Includes

• 47mm Cast Iron Cylinder
• High-Compression Aluminum Cylinder Head
• Aluminum Racing Piston
• Piston Rings
• 12mm Wrist Pin
• Wrist Pin Circlips
• Complete Top-End Gasket Set

Performance Benefits

• Significant increase in horsepower and torque
• Faster acceleration
• Improved hill-climbing performance
• Stronger mid-range power
• Higher top speed potential
• Excellent heat resistance
• Long-lasting cast iron construction
• Rebuildable cylinder for extended service life
• Ideal for both daily riding and performance applications

Recommended Supporting Upgrades

For maximum performance, pair this cylinder kit with:

• 19mm–21mm performance carburetor
• Performance reed valve
• Expansion chamber racing exhaust
• Reinforced crankshaft
• Performance clutch springs
• Properly tuned variator and roller weights
• Performance CDI (where applicable)

Common Vehicle Fitment

Honda

• Dio AF18
• Dio AF27
• Dio AF28 ZX
• Shadow 50

Kymco

• Curio 50
• DJ 50
• DJ Refined
• Fever 1
• Fever 2 Super Fever
• KB50 Meteorit Scout

SYM

• DD50
• Fancy 50
• Fiddle 50 (2-Stroke)
• Flash 50
• Free 50
• Pure 50

Daelim

• Message 50
• Tapo 50

Fits vertical (standing) GR1 air-cooled 2-stroke engines only. Always verify engine type before purchasing.