Polini's new cylinder kit for 4T Yamaha X-MAX and X-CITY 125 / MBK Cityliner 125 grants great performance and faster acceleration through the rev range making overtaking easier thanks to the fast power delivery of this kit. The kit comes together with a pressure regulator, it's easy to fit and has been calibrated to suit the original exhaust system. By increasing the fuel pressure in the injection system this eliminates the use of the electric gear case thus increasing the power and torque of your scooter.
Technical Features
Made in Italy, this Polini cylinder kit has a 63mm bore and a displacement of 182.66cc. The displacement improves the power output of the scooter with a 11,5:1 compression ratio. The cylinder is cast in light aluminium alloy. The liner with Nickel-Siliceous coating improves the sliding of the piston and resistance to wear and abrasion. The kit includes the new SLS (Single Layer Steel) head gaskets made of flouride techno-polymers that are resistant to high temperatures. The piston is die-cast at high siliceous content with 'omega' design. This reduces thermal expansion and slack. Two special rings and one scraper ring are included with the piston. Polini's special piston dome design also improves the compression ratio.
Polini product code: 166.010
Suggested Retail Price: 279 Euros (£247 at the current exchange rate) + VAT