VT390-20
More power for ambitious drivers!

✅ Type: 1 cyl. 4 stroke OHV 

✅ Cylinder capacity: 389 cm³ 

✅ Net power: approx. 20 hp 

✅ Output shaft: 25 mm stub shaft (metric) 

✅ Lightweight aluminum piston UT2 

✅ Vacuum connection for fuel pump 

✅ Crankshaft with centrifugal lubrication 

✅ CDI ignition with adjustable cam 

✅ Increased compression ratio 

✅ Large, wedge-secured intake and exhaust valve

✅ Valves and valve seats optimized for flow 

✅ Lightened and balanced flywheel 

✅ Optimized ignition timing 

✅ Reinforced valve springs (hard) 

✅ Tuning camshaft 

✅ Connecting rod with bearing shells 

✅ Adjusted intake and exhaust ports 

✅ Tuned intake manifold 

✅ Carburetor: VM22-26 

✅ Air filter: sports air filter 

✅ Speed limiter: removed; demand max. 6,000 rpm