What do you think this Motorized Bike Jackshaft. What it dose and how it dose it *Viewer Request* Hill Climb and Speed Test video?
Quick run down on how a jack shaft kit works.
This has a 11T drive gear increasing the ratio by 10%
BBR Jackshaft: bit.ly/2s1CObx
BBR tuning GT2-A 2.4L frame package: bit.ly/2sF7RcI
Buy motorized bike parts from HERE: bit.ly/2rmdOYb
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