Testing the pre ported G4 motorized bike cylinder from California Motorbikes.
How does it stack up to my own port work?
Ported for a reed valve
https://www.californiamotorbikes.com/product-page/gtz-ultra-racing-cylinder-fully-ported-for-reed-for-80cc-two-stroke
Piston port (plug and play)
https://www.californiamotorbikes.com/product-page/ported-80cc-66cc-cylinder-fits-wildcat