Graves Motorsports Yamaha R1 Cat Eliminator Exhaust Valve Type-R

Description

Graves Yamaha R1 Cat Eliminator Exhaust Valve Type-R. This catalyst-replacing exhaust is designed for the application listed below.

Specifications and features

• Pipework: titanium.
• Silencer body: titanium.
• Silencer length: 200 mm.
• High-temperature titanium tubing with a 1.00 mm wall.
• 4 mm titanium spring tabs.
• Lambda-sensor connection for the specified tuning arrangement; the sensor itself is not included.
• Integrated silencer mounting bracket.
• EVR butterfly valve works with the original exhaust servo motor and cables.

Fitment

• Yamaha R1 R1M R1S 2015-2025

Installation and use

• Replaces the original catalytic-converter section.
• Manufacturer specifies closed-course competition use only; this is not a road-approved exhaust.
• Match the ECU calibration to the exhaust configuration. Any quoted development performance depends on the associated intake and tuning setup; tuning equipment is separate.
• Requires compatible FTEcu software and the correct EVR activation calibration, purchased / arranged separately. Confirm calibration availability with Velox before installation.

Manufacturer part number: EXY-17R1-CVTT

Published measurements

• Published weight: original 17.4 lb; Graves 6.5 lb.
• Graves EVR sound at idle / 5,000 rpm: with optional insert 89 / 103 dBA; without insert 87 / 108 dBA. Original: 80 / 91 dBA.

Manufacturer test figures are shown at the stated engine speeds. Track noise tests may use a different method.