ALPINESTARS Chrome Sport Hoodie - Gray - Medium 4200918-951-M Kickstand Bumper The exhaust valve race uses

The exhaust valve race uses the factory exup hardware alongside the Graves EVR valve and custom mapping to improve low to mid-range rpm and small throttle opening torque and drivability to create and better powerband and ride

Includes two chrome 1/2"-13 x 5/8" knurled head finger bolts with O-rings

and exhaust systems Tunes acceleration fuel delivery in every gear for peak performance Can fine-tune the non-acceleration air/fuel curves using the Bluetooth® app Requires no dyno tuning - plug it in and ride

Waist adjusters

Fitment: Aprilia RS660 2021 - 2024

ALPINESTARS Chrome Sport Hoodie - Gray - Medium 4200918-951-M Kickstand Bumper The exhaust valve race usesKnitted fabric main shell. Interior aramidic reinforcement on shoulder, elbow and back. One zippered hoodie style hand pocket on front. High collar with removable storm hood. Bio Light protectors on shoulders and elbows. Back compartment with PE padding (protectors as accessory upgrade, sold separately). Waterproof inner document pocket Waist and cuff hems are knitted.