This aftermarket alloy flywheel is produced to suit HPI Savage series models, including Savage, Savage X and the K4.6 layout. The component uses a three-post mounting arrangement that aligns with the crank pattern identified in the title.
The flywheel alters the engine's rotational inertia, which directly influences idle smoothness and the speed of throttle response on nitro-powered RCs. Swapping to a different mass changes rev behaviour, and this alloy item provides a robust alternative to original equipment.
Installation requires standard engine access: remove the existing flywheel, line up the three posts with the crank flange, then tighten to good engine practice. Handle as a model engine part when fitting and adjusting carb and throttle settings.
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