Procom CDI Unit Part Number:A01-137156 (MFG #: PE-C-AP500S-A) Look closely and you'll notice

Look closely and you'll notice these boots employ the BOA Fit System with M4 dial at the laces

CE EN1621-2 level 2 central back protector with removable insert to comfortably fit a neck brace

while from the knee down the model tapers

Offer better bottom and top power

dramatically improving traction

Procom CDI Unit Part Number:A01-137156 (MFG #: PE-C-AP500S-A) Look closely and you'll noticeFEATURES Eliminates stock RPM cut off. Improves top end without sacrificing stock low end power while offering better mid range and throttle response. Easy to install, just remove your existing CDI and plug in the new one. The CDI box will increase by a safe 500 1000 RPMs to offer you more power without sacrificing reliability. Will increase horsepower. No returns on electrical parts sold as is. Each unit is tested by the manufacturer.