JML EN 250i / EN 250i PRO 300cc conversion kit
Complete JML Tuning Kit – Cylinder, Piston, Gaskets + Exhaust Valve + Exhaust System with PowerBomb (without catalyst)
This kit is a full solution for riders seeking a significant power increase and improved engine performance in JML EN250i and EN250i PRO motorcycles.
The set includes:
Cylinder with piston and complete gasket kit – ensuring durability and optimal compression.
Exhaust valve – precisely matched component for improved exhaust flow.
Exhaust system with PowerBomb header (without catalyst) – designed to increase torque in the low and mid RPM range while reducing the overall weight of the bike.
The kit is intended for sport use only and is not approved for road use.
Installing the exhaust system without a catalyst requires uploading a new ignition map to ensure proper engine operation. Please contact an authorized JML dealer or us directly for this procedure.
