Polini Sport 70cc cylinder kit, CP 17.5mm carburetor, and Polini exhaust

Polini Sport 70cc Cylinder Kit + CP Carburettor + Team 4 Exhaust Minarelli Horizontal LC

Polini tuning kit consisting of a Sport 70cc Cylinder, CP Carburettor with cable choke and Team 4 70cc exhaust, designed for liquid-cooled Minarelli Horizontal engines (LC). This assembly offers a balanced configuration to increase scooter performance while maintaining good reliability and ease of tuning.

The combination of these three components makes it possible to optimise the complete engine assembly, improving displacement, intake and exhaust gas flow to achieve quicker response, greater acceleration and better performance compared with the original 50cc configuration.

The Polini Sport 70cc Cylinder is made of cast iron, offering excellent wear resistance and great durability. Its design is intended for sporty daily-use setups, providing a noticeable increase in torque and power compared with the original Cylinder.

Thanks to its Sport configuration, this Cylinder offers an ideal balance between performance and reliability, making it a recommended option for users looking to improve scooter performance without resorting to extreme racing setups.

The Polini CP 17.5 mm Carburettor with cable choke completes the intake system, providing a greater mixture flow rate and more precise throttle response. Polini's CP range stands out for its compact design, ease of adjustment and good performance on tuned engines.

The assembly is completed with the Polini Team 4 70cc exhaust, developed to work with 70cc sport Cylinders. Its optimised expansion chamber improves exhaust gas flow and makes better use of the Cylinder's characteristics, increasing the engine's ability to operate at higher revs.

Main features of the Polini Sport 70cc Cylinder:

• 70cc Cylinder for Minarelli Horizontal LC engine.
• Made of high-strength cast iron.
• Greater engine torque compared with the original 50cc Cylinder.
• Excellent balance between performance and durability.
• Ideal for sporty daily-use setups.
• Compatible with transmission and sport exhaust configurations.

Main features of the Polini CP Carburettor:

• Sport CP-type Carburettor.
• Manual choke operated by cable.
• Compact and lightweight design.
• Quick throttle response.
• Ease of adjustment and tuning.
• Optimised for tuned 2-stroke engines.

Main features of the Polini Team 4 70cc exhaust:

• Sport exhaust for Minarelli horizontal engines.
• Optimised for Cylinders up to 70cc.
• Expansion chamber designed to improve performance.
• Improves acceleration and power delivery.
• Ideal for Sport and Racing setups.
  

Advantages of the kit:

• Complete setup with Polini components compatible with each other.
• Displacement increase from 50cc to 70cc.
• Improved acceleration and engine response.
• Better use of the exhaust and intake system.
• Balanced configuration for road and sport use.
• Avoids the need to select components separately.

Installation recommendations:

• Carry out correct Carburettor tuning after installation.
• Adjust the transmission (rollers, contra spring and clutch) according to the final configuration.
• Use quality premix oil for 2-stroke engines.
• Properly run in the Cylinder before demanding maximum performance.

Application:

Kit compatible with scooters equipped with a liquid-cooled Minarelli Horizontal engine (LC), including:

• Yamaha Aerox 50 LC.
• MBK Nitro 50 LC.
• Other scooters with Minarelli Horizontal LC engine.

Important:

This kit is intended for sport setups. To guarantee the performance and reliability of the assembly, it is essential to carry out correct Carburettor tuning and adapt the transmission to the new performance level.