● Optimized airway :improved low speed performance, more powerful.

● Increase displacement :overall performance improvement, strong power.

● Optimized CAM profile :improved match with market accessories.

● Optimized the magneto ignition advance angle:improve compatibility with market accessories.

● Design with reference to common market parts :repair can be directly replaced by market parts.

● Optimized rocker arm :the engine sound is more mellow.

● Adopting the latest platform shifting mechanism :shifting is more effortless, and the feeling and comfort are better.

● Optimized crankshaft dynamic balance :less vibration, better riding comfort.

● Enhanced main and counter shaft :to improve gear fatigue strength and extend service life.

● Using piston back cooling technology, forced lubrication and cooling piston and piston ring, reduce engine heat load.

● DLC piston ring :more wear resistant piston ring, reduce oil consumption.

● Strong connecting rod with crankshaft :better reliability.

● New design of the engine appearance :novel appearance, atmosphere, full sense of strength.

WIDE OPEN THROTTLE CURVES（玄剑200水冷）  

WIDE OPEN THROTTLE CURVES（玄剑250水冷）  

WIDE OPEN THROTTLE CURVES（玄剑300水冷）  

INSTALLATION DIMENSIONS