DEC Pro crankshaft - .21 (Dragon IV)
Standard item of Dragon IV.
DEC Crankshaft: Reduced engine vibration, resist wear, good lubricity.
The new version of DEC Crankshaft, has the Alpha Patent – Dynamic Equilibrium, which can efficiently balance the inertial force from piston pin, from conrod, and from crankshaft rotation, to reduce the vibration of engine and to increase the engine power. The timing on the crankshaft has been altered for more power and a more linear power delivery has been achieved when combined with the new piston and liner.