Graves Motorsports Suzuki DR-Z4S / DR-Z4SM Aluminum Black – Cat-Back Exhaust

Description

Graves Suzuki DR-Z4S / DR-Z4SM Aluminium Black – Cat-Back Exhaust. This cat-back slip-on exhaust is designed for the application listed below.

Specifications and features

• Pipework: titanium.
• Silencer body: black aluminium.
• Octagonal silencer profile.
• Integrated silencer mounting bracket.
• Quiet insert / spark arrestor supplied.
• Hardware supplied to refit the original header heat guard.
• Connects through a secondary titanium link pipe.

Fitment

• 2025 – 2026 Suzuki DR-Z4S+ / DR-Z4S / DR-Z4SM+ / DR-Z4SM

Installation and use

• Retains the original catalytic converter when fitted to the standard header / catalyst assembly.
• 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.

Manufacturer part number: EXS-25DRZ4-CBTAK

Published measurements

• Published weight: original 12.5 lb; Graves 6.5 lb.
• Sound with spark-arrestor insert: 82 dB at idle, 88 dB at 4,000 rpm and 90 dB at 5,000 rpm. Original: 78 dB at idle and 90 dB at 5,000 rpm.

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