2003 Suzuki DR-Z400S, Street or Trail - The DR-Z400S is similar to the DR-Z400E their basic differences are: Compact digital instrument cluster with speedometer odometer twin-trip meters with addition/subtraction capability clock timer and stopwatch functions. Smooth throttle response with a Mikuni BSR36 CV-type carburetor fed by 6-liter airbox. The left side cover has quick-release fasteners for easy access to the air filter. Reduced compression ratio (12.2:1 to 11.3:1) for operation with 87-octane fuel. On-road legal lighting with bright 60/55 watt halogen headlight compact tail/stoplight lightweight rubber-mounted turn signals and horn. Thermostatically-controlled cooling fan mounted to the left radiator helps maintain consistent operating temperature in traffic. Dual-sport tires to meet highway use regulations (F: 80/100-21 R: 120/90-18).