Kawasaki ER-5

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Kawasaki ER-5

Kawasaki ER-5 blue.jpg

Warm start-up using no choke with a Kawasaki ER-5 1997.
Manufacturer Kawasaki
Production 1997–2006
Successor ER-6
Class Naked bike
Engine 498 cc parallel twin
Transmission 6-speed
Brakes 280 mm single disc with twin-piston caliper (front), 160 mm expanding brake (rear)
Tires 110/70-17M/C (54H) (front), 130/70-17M/C (62H) (rear)
Wheelbase 1430 mm
Dimensions L: 2070
W: 730
H: 1070 mm
Seat height 800 mm
Fuel capacity 17.00 liters
Related Kawasaki GPZ500

The Kawasaki ER-5 is a naked commuter motorcycle produced in Japan by Kawasaki. The bike is powered by a liquid cooled four-stroke DOHC 498 cc engine based on the design used in the GPZ500. It can be restricted to 25 kW (34 hp), the maximum power motorcycle allowed by certain licences in Europe.


The Kawasaki ER5 is powered by a 498CC DOHC liquid cooled, in-line, parallel twin engine which produces 48BHP and 35Nm torque. The engine is fed by two carburettors, one for each cylinder.


The ER5 has a twin piston front disk brake and a rear drum brake. Unlike many modern motorcycles, with fixed caliper and floating disk, the ER5 has a fixed disk and floating caliper. 'A' models have a trailing piston which is smaller than the leading piston but the later 'C' models have identical leading and trailing pistons, dramatically improving front braking. 'A' model owners often fit caliper units from 'C' models. As for most motorcycles, another common braking upgrade is to reduce sponginess by replacing the OEM brake hose with a braided brake hose.


The ER5 has "right way up" front forks of 36mm diameter on A series and 37mm on C series. They are considered non adjustable. 10 weight fork oil is the recommended fluid. Smaller, lighter riders may wish to use a less heavy oil, for example 5 weight. Although 5 and 10 weight oils can be mixed in equal proportions to create a happy medium of 7.5weight

The rear has a dual sided suspension which is not adjustable apart from pre-load.


The ER5 uses standard motorcycle controls; left hand clutch, right hand front brake and throttle, left foot gear stick, right foot rear brake.