Graves Motorsports Yamaha R1 Cat Eliminator Stainless Steel Exhaust 09-12. These exhaust systems are constructed from Stainless Steel tubing and completely replace your stock exhaust canisters and link pipes removing the bikes factory cat system (leaving the factory header).
The Graves Motorsports Modular Cat Eliminator Slip-On exhaust system is a perfect mix of form and function. Eliminating the catalytic converter form the stock exhaust removes significant weight, reduces stored up exhaust heat, and increases the flow of exhaust gases. When all of these factors are combined it equals POWER. This Yamaha R1 slip-on features mandrel bent stainless steel tubing and carbon fiber silencers with tapered conical outlets. An O2 Bung (with plug) is provided for use with the stock Yamaha O/2 Sensor or use a Dynojet Auto-Tune module which allows for live, closed loop EFI tuning.
Select from "Standard" end caps or the "Polished" Show Stopper end caps (using the pull down menu). The lightweight + compact oval silencers remove weight and take the look of the 2009-2012 R1 to the next level. Our exclusive "Everlast" packing produces an exhaust note like no other and holds up longer to the extreme conditions of a high revving motorcycle. This slip on sounds, looks and performs like motorcycle championship winning quality and design should.
Author: John-Paul Craig
Great Exhaust. Saves a ton of weight and looks really nice. Sounds amazing. Along with the PCV it really smoothed the powerband and even took out some of the lash at low rpm.
With no mechanic experience, it took me about 2 hours to install, with a lot of learning along the way. Not hard though. Fitment is good, but the instructions can be a little vague.
I love it!
