Originally Posted by infinique

Hi guys, managed to spend sometime to compare Spec II and Spec III engine finally, the photos on the left is Spec III while the one on the right is Spec II. As seen new redesigned crankshaft with additional scope plus lightened hollow conrod notch. Also note the different design on the crankcase backplate, bigger bore on top case. Ohter noticeable diferrence would include new heatsink design, new piston sleeve which is higher showed on picture side to side to Spec II. I must say LRP really gave in all effort to squeeze every bit of horsepower out from this engine, hopefully to receive new updates from LPR such as Factory Tuned Version matched with LRP own exhaust piping system. Great job LRP and keep it up all the good work on this impressive engine



Side to side comparison, Spec III noticeable higher piston sleeve.



Back plate difference, left is Spec III bigger bore than Spec II.



New Crankshaft design, check out the additional scope and hollow conrod notch.







Spec III on MTX4 setup.



Spec II on MTX4 setup.

Cheers,
PMW