Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50A Sena QUADBOSS: RP25 / RP35

QUADBOSS: RP25 / RP35

High-temp black thermal coated oval shaped aluminum mufflers

2014-2015 Honda MSX125 Grom

Built-in FM radio

Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50A Sena QUADBOSS: RP25 / RP35TFI POWER BOX When installing an aftermarket exhaust, proper tuning is a must. The Big Gun Power Box is a plug and play fuel controller that allows you to properly tune your fuel injected motorcycle, ATV or Side x Side in just minutes. Installing a Power Box allows you to get the most out of your aftermarket exhaust and increases throttle response. A Power Box helps cure the lean issue that is run into when installing a higher flowing exhaust and