Suzuki QuadSport Z400
February 19th, 2008
Powering the QuadSport Z400 is a high-performance 398cc liquid-cooled, DOHC, single cylinder four-stroke engine with a 37mm Mikuni carburetor with TPS. Its bore and stroke measure 90.0mm x 62.6mm. Four valves are actuated by cam lobes riding directly on bucket tappets. The cylinder head features a narrow 28-degree included valve angle for a compact, efficient combustion chamber with an 11.2:1 compression ratio. Fuel is fed through 36mm intake valves, with exhaust leaving through 29mm valves. A dry sump lubrication system contributes to the more compact engine package.
The aluminum-alloy cylinder is plated with Suzuki’s own race-proven nickel phosphorus-silicon-carbide coating, known as SCEM (Suzuki Composite Electrochemical Material), for reduced weight and improved heat transfer, allowing for tighter and more efficient piston-to-cylinder clearance. Additionally, the piston is forged aluminum-alloy for even more weight savings. A counter-balancer shaft reduces vibration, while an automatic cam chain tensioner and an electronic CDI ignition simplify maintenance duties. A manual fivespeed transmission (with reverse gear) transmits horsepower to the wheels. A handy knob on the front left fender releases the reverse interlock to select reverse gear with final drive transmitted through an O-ring sealed roller chain. Suzuki’s own Start-In-Gear System allows the engine to be started in any gear when the left brake lever is applied.
The QuadSport Z400 starts with a lightweight, rigid, high-tensile-steel-alloy tube frame and sub-frame. An independent double-wishbone front suspension system with piggyback reservoir shocks provides 8.5 inches (21mm) of travel. Out back, an aluminum-alloy swingarm utilizes a fully adjustable piggyback reservoir shock with 9.1 inches (230mm) of wheel travel. A high-impact skid plate is standard equipment as are durable, serrated-steel footpegs. Wheelbase measures 49 inches (1245mm) with a full 10.4 inches (265mm) of ground clearance. Rolling stock consists of aluminum alloy wheels shod with Dunlop radial tires for maximum traction and performance. The Z400's T-shaped seat is narrow at the front and flares out over the rear fenders, allowing the rider to comfortably shift weight back and forth and side to side.
Seat height is set at 31.9 inches (810mm) and smoothly transitions to the bodywork and lightweight 2.65-gallon (10-liter) fuel tank. A multi-reflector taillight mounted at the rear completes the QuadSport Z400. The Z400 has a sharply angled nose with stacked dual headlights, twin air intakes and high-mounted, deeply flared front and rear fenders.
One ride on a QuadSport Z400 and you'll understand what heart-pounding performance is all about. The QuadSport Z400 is engineered to be the best all-around sport machine for any terrain - from woods to sand to the track. Boasting industry-leading technology, the QuadSport Z400 sets the standard for high-performance sport four-wheelers.
Go ahead - take aim and turn it loose. The QuadSport Z400's hard-hitting and high-revving powerplant lets you blast out of corners and rewards you with awesome acceleration on the straight-aways. And talk about maneuverability! Its lightweight design makes it incredibly agile, while its state-of-the-art chassis and long-travel suspension smooth out the gnarliest terrain.
The QuadSport Z400 - pure sport performance!
