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GS part number GT4B-5 and Yuasa part number YT4BBS
Commonly found on 50cc 4-stroke QMB139/GY6 engines
The special tight coil design for current resistance increases the firing speed
Duke 125cc- 150cc
Rear Tail Light Assembly for Vento Zip Brand scooters
Hoca QMB139 Engine Gear Sets Performance Carburetors GS part number GT4B-5 andHoca Gear Sets in a variety of combinations for 50cc, 4 stroke engines. Choose from 16, 17 & 18 Front Tooth combinations and 41, 42 & 46 Rear Tooth combinations. Please see our Warranty & Returns Policy.
US$ 127.50
US$ 45.52
