If you have Adelin brake lever (most people do) and need a rear brake switch, this is the trick set up. This will allow you to now have a brake sensor for the rear brake (left side)
Honda Ruckus GET Plug & Play EVI Performance CDI/Coil Combo
From $220.00
GY6 or GET Dip Stick Breather
Regular price $18.00
NGK Honda Ruckus / Metropolitan iridium spark plug 49cc/50cc
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GY6 OKO / PWK Complete Performance Carburetor
From $150.00