This ceramic coated stainless steel black slip-on mounts to the stock catalytic converter to improve the looks of your R1.

• Stage 1 Quiet Insert Installed
• Stage 2 Quiet Insert Sold Separately
• Stainless Steel Ceramic Coated

NOTE: M4 Recommends re-flashing your stock ECU to unleash the full potential of all M4 products on the Yamaha R1.