Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50D Universal Snowmobile Cover W/Built-In Under Cover T standards

T standards

Powder coated Black Wrinkle (Textured) for supreme durability

2010-2011 Yamaha YFZ450X

Series: HFRA

Each sprocket is cupped down from the tooth ring to the body to reduce as much weight as possible

Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50D Universal Snowmobile Cover W/Built-In Under Cover T standardsTFI 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