Engine ZONGSHEN 125cc Fiddy Racer

Discover the most powerful 125cc engine in its class: the Zongshen 125cc Fiddy Racer!

The Zongshen Fiddy Racer is designed for purists looking for a 125cc engine capable of delivering strong, immediate torque while offering mechanical quality worthy of larger-displacement engines.

Its robust, well-finished single-cylinder 4-stroke engine is ready to fit a wide variety of frames: pit bikes, Dax/Monkey, supermoto or any custom project.

Torque and responsiveness: the 4-speed N1234 gearbox and manual multi-plate clutch provide perfect use of the torque for immediate acceleration and precise riding.

Here is the gearbox ratio: 1st:34/13 - 2nd:29/17 - 3rd:26/22 - 4th:22/24.

Cylinder head and intake: generous valves (27 mm intake / 23 mm exhaust) provide optimal airflow and efficient combustion.

Cooling and reliability: oil-filtered crankcase with hoses ready for an oil cooler, Ø 17 mm transmission shaft and reinforced clutch – designed to withstand intensive use and ambitious tuning.

Supplied with kickstarter, gear lever, intake manifold, 420 mm-15-tooth gearbox output sprocket and high-performance Zongshen CDI.

Compatible with standard intake and exhaust systems.

Strength and durability: every component is designed to last, with quality close to that found on Daytona-type engines, for purists seeking reliability and thrills.

The Fiddy Racer is more than just an engine: it is the ideal foundation for a serious project, combining generous torque, reliability and riding pleasure.

Whether for intensive leisure riding or a small racing build, it delivers a lively, responsive and authentic engine experience worthy of the engines that inspire enthusiasts.

Starting advice:

Kickstarter: press down gradually with your foot to pass the hard point of compression. Avoid sharp kicks to prevent any risk of damage to the kickstart shaft.