Honda-The Power of Dreams
Honda Announces Japanese Launch of Imported American Heavyweight Custom Bike: The Shadow Aero

Tokyo, January 29, 1998 --- Honda Motor Co., Ltd. has announced the launch of the Shadow Aero heavyweight custom bike, imported from the United States. A limited stock of 300 vehicles will go on sale in Japan on March 27. The Shadow Aero is made by Honda Motor's US production subsidiary, Honda of America Manufacturing Inc. A classic-design American custom bike, the Shadow Aero boasts an 1100cc liquid-cooled V-twin engine guaranteed to give an exciting ride.

It was first displayed at the 32nd Tokyo Motor Show in 1997, where its low, long profile, teardrop-shaped fuel tank, and deep-fendered, thick tires proved an extremely popular mix. Low-slung, with a comfortable seat and wide handlebars, it also features a seesaw-type shift lever and stepboard. With its classic lines and generous features, it promises to be a sure-fire hit with bike-owning enthusiasts.

Shadow Aero
Shadow Aero

Domestic annual sales target: 300 units (limited stock)

Design features

  • Fuel tank, muffler and seat arranged in a long, flowing design, emphasizing its sleek, long, low lines and exuding a classic air
  • Chrome artillery shell-shaped headlamp casing integrated in a single unit with the speedometer conveys that extra sense of individualism and freedom
  • Seat designed to evoke the image of a leather saddle, with pillion separate

Engine features

  • Advanced 1099cc liquid-cooled 4-stroke V-twin 2-cylinder engine delivers massive torque and is beautifully styled externally
  • Super-low-slung fish-tailed mufflers give the big twin engine a really low growl


  • Black with Twilight Pearl Silver

Main specifications

Model Shadow Aero
Type Honda of America SC39
Length x width x height (m) 2.540x0.975x1.135
Wheelbase (m) 1.680
Ground clearance (m) 0.145
Seat height (m) 0.725
Curb weight/
dry weight
(kg) 296/277
No. of riders (person) 2
Fuel economy [60 km/h test on flat ground]: (km/l) 25.7
Minimum turning radius (m) 3.4
Engine model SC39E
Engine type liquid-cooled 4-cycle V2
Displacement (cm3) 1,099
Bore/stroke (mm) 87.5x91.4
Compression ratio 8.0
Maximum power output (PS/rpm) 55/4,750
Maximum torque (kgm/rpm) 9.2/2,500
Carburetor type VDK5
Starter self-starter type
Ignition full-transistor battery ignition
Lubrication forced pressure and wet sump
Oil capacity (l) 4.2
Fuel tank capacity (l) 16
Clutch coil spring
Transmission 5-speed
Gear ratios 1st gear 2.375
2nd gear 1.391
3rd gear 1.037
4th gear 0.888
5th gear 0.800
Drive ratios (primary/final) 1.692/0.853x3.090
Drive mechanism shaft drive
Rake (degrees)/trail (mm) 32o15' /144
Tire sizes Front 140/80-17 69H
Rear 170/80-15M/C 77H
Brakes Front hydraulic disc
Rear hydraulic disc
Suspension Front telescopic
Rear swingarm
Frame type double cradle