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Honda GB 400TT Clubman Tourist Trophy

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Make Model

Honda GB 400TT Clubman Tourist Trophy

Year

1988 -

Engine

Four stroke, single cylinder, SOHC, 4 valve

Capacity

390 cc / 23.7 cu-in
Bore x Stroke 84 x 72 mm
Cooling System Air cooled
Compression Ratio 9.2:1

Induction

Keihin PH 69

Ignition 

CDI 
 Starting Electric

Max Power

34 hp / 25.3 kW @ 7500 rpm

Max Torque

3.4 kgf-m @ 6000rpm

Clutch Wet multi-plate coil spring

Transmission 

5 Speed 
Final Drive Chain
Gear Ratio 1st  2.384 (31/13)  /  2nd  1.555 (28/18)  /  3rd 1.200 (24/20)  /  4th 1.000 (23/23)  /  5th 875 (21/24)

Front Suspension

 35 mm telescopic forks

Rear Suspension

Dual shocks with adjustable pre-load

Front Brakes

Single 256mm disc

Rear Brakes

138mm Drum

Front Tyre

90/90 -18

Rear Tyre

110/90 -18
Rake 64°
Trail 105 mm / 4.1 in
Seat Height 880 mm / 34.6 in

Dry Weight

157 kg / 346 lbs

Fuel Capacity

20 Litres / 5.3 US gal
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All GB500/400's featured black-green paint with gold pin-striping and lettering, as well as chrome wire wheels, clip-on handlebars, steel-braided oil lines, steel side covers (i.e., not plastic), round gauges with matte silver faces, fork gaiters, non-adjustable fork with hydraulic damping, 18-inch wheels with tube-type tires, solo seat with painted rear cowling and a fuel tank indented with knee grips.[3]

The GB500/400's engine was based on the Honda XL600 engine, a dry-sump four-stroke dirt bike. The four-valve single cylinder engine featured a radial four-valve combustion chamber, along with a tubular frame, wire wheels, clip-on handlebars, solo seat, seat hump, and pin-striped gas tank. The styling resembled TT single-cylinder racing bikes (such as the Manx Norton, the BSA Gold Star and the AJS 7R) that were prominent in the TT until the 1960s.

In the USA, GB500s were imported for model years 1989 and 1990. In 1992, a third-party exported 1,000 unsold Honda GB 500 Clubmans (German) from the USA to Germany as grey import vehicles.[4][5][6]

Both the 400 cc and 500 cc versions were imported and sold by Honda New Zealand. When originally released in NZ, the GB came in three models: dual seat; Mk2 with half-fairing, single seat with cowling; and no fairing, single seat.