Grom crazy 170cc Vs Electric Grom and 181cc
Methanol powered 170 cc Grom MSX125 five speed transmission, billet, crank, extra large, BlackWidow injector, ceramic coated cylinder, head and port work, ceramic coated, piston, acro exhaust 
Electric grom 12 kW rated motor, making 60 hp on the Dyno 
165cc high compression titanium intake valve, oversize exhaust valve, ported cylinder head, ceramic coated, piston and cylinder, head, acro, copy exhaust, and custom intake with large throttlebody
181cc high compression tight intake valve, oversize exhaust valve, welded raised port, custom cylinder head, ceramic coated, piston, and acro exhaust custom intake and large throttlebody
Blackwidowdynos.com