This engine is tuned and modified as follows by us:

- no rpm limiter
- Lighter aluminum piston UT2
- crankshaft with oil centrifuge
- original conrod with bearing shells
- performance camshaft (Version 2, performance above)
- bigger In- and EX-Valve (with retainer and keeper)
- polished valves
- stronger valve springs
- cylinderhead tuning complete (ported and milled) with higher compression
- Bronze Valve Guides
- Aluminum roller rocker arms with 1 mm more valve lift
- Reinforced aluminum push rods
- ARC billet Aluminum Flywheel (2,1 kg)
- CDI ignition system
- extended intake manifold for more torque
- optimized carburetor GX340 or GX390 with large K&N air filter
- petrol pump with mounting plate and petrol pipes at the engine
- exhaust pipe "snake" Ø 35mm
- Amsbeck centrifugal clutch type 90 with pinion mount M24x1.5 (starting speed 2000 rpm)
- NO engine cover

Engines are delivered WITHOUT oil for shipping reasons. Please order separately.