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Rear Venturi Ports — Once air enters the hidden multi-stage air channel in the EPS liner
Quick release handlebar clamp By loosing just one bolt
2022 Arai Brochure
when required
Pre-cut kits are printed on durable
Graves motorsports lower 50mm velocity stacks R1 2009-2014 ABY-09R1-REVB Speedster Dual Exhaust System Rear Venturi Ports — OnceGraves Motorsports Yamaha R1 Lower 50mm Velocity Stacks for the 2009 2014 models. These 50MM Lower Velocity Stacks with Pivots were developed by Graves Motorsports for your Cross Plane Crank R1. This item is the "Lower" stack assembly only (see item # ABY 09R1 REVT to purchase the top add on). This stack kit improves power throughout the entire RPM range. The staggered tops allow the cylinders to share the available volume of air in the R1s air box
