Description
Graves Kawasaki Ninja 400 + Ninja 500 WORKS2 Full Exhaust System. This full exhaust system is designed for the application listed below.
Specifications and features
- Pipework: stainless steel.
- Silencer body: carbon fibre.
- Diamond-profile silencer.
- 7075-series hard-anodised aluminium exhaust flanges.
- Machined stainless-steel exhaust-port spigots.
- Lambda-sensor connection for the specified tuning arrangement; the sensor itself is not included.
- Removable sound-reducing insert supplied.
Fitment
- Kawasaki Ninja EX400 2018-2023 / Z400 2018-2023 / Ninja 500 2024 + Z500 2024 onwards
Installation and use
- 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: EXK-18EX4-FSCW2
Published measurements
- Published weight: original 13 lb; Graves 7.6 lb.
- Sound at idle / 5,000 rpm: original 71.5 / 84.5 dB; Graves with supplied insert 80 / 97 dB.
Manufacturer test figures are shown at the stated engine speeds. Track noise tests may use a different method.




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