Bimota YB4 EI (1988)

The Bimota YB4 EI is a rare motorcycle model that was produced in 1988, with only 303 units made. It has a four-stroke, transverse four-cylinder, DOHC engine with a capacity of 749cc and a liquid cooling system. The bike has Weber Marelli electronic fuel injection and CDI ignition, with a maximum power of 121 hp at 10500rpm and a maximum torque of 88.3 Nm at 8500rpm. The transmission is 6-speed, with a final drive chain. The bike has a two diagonal beam-aluminum frame with internal ribbing and a swing-arm made of aluminum. The front suspension is 42mm gas telescopic forks with external adjustment for anti-dive, and the rear suspension is a gas single shock with external adjustment. The front brakes are two 320mm discs, and the rear brake is a single 230mm disc. The bike has a dry weight of 180kg and a fuel capacity of 20 liters. Its average fuel consumption is 6.5l/100km, with a braking of 60-0/100-0 at 13.2m/36.0m or 43.3ft/118.1ft. The standing 1/4 mile time is 10.8 seconds at 201.8 km/h or 125.4mph. The bike has been involved in a variety of road tests and group tests against other bikes, such as the Honda RC30 and the Yamaha FZR750R. Overall, the Bimota YB4 EI is a high-performance motorcycle with unique features and advanced technology for its time.

Technical specifications:

Make Model: Bimota YB4 EI

Year: 1988
Production: 303 units
Engine: Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.
Capacity: 749 cc / 45.7 cub. in.
Bore x Stroke: 68 x 51.6 mm
Compression Ratio: 11.2:1
Cooling System: Liquid cooled
Induction: Weber Marelli electronic fuel injection
Ignition: CDI
Starting: Electric
Max Power: 121 hp 89 KW @ 10500rpm
Max Power Rear Tyre: 72.7 kW / 97.5 hp @ 10400 rpm
Max Torque: 88.3 Nm / 9.0kgf-m / 65.1 [email protected] 8500rpm
Transmission: 6 Speed
Final Drive: Chain
Frame: Two diagonal beams in section bar made of aluminium with internal ribbing. The cylinders are supported by plates bolted to the beams and the swing arm is made of aluminium
Front Suspension: 42mm Gas telescopic forks, external adjustment for anti-dive
Rear Suspension: Gas single shock, external adjustment
Front Brakes: 2x 320mm discs
Rear Brakes: Single 230mm disc
Front Tyre: 3.50-17
Rear Tyre: 5.50-17
Dry Weight: 180 kg / 396.8 lbs.
Fuel Capacity: 20 Litres / 5.3 gal
Consumption Average: 6.5 l/100km / 36.2 mpg
Braking 60 – 0 / 100 – 0: 13.2 m / 36.0 m 43.3 ft / 118.1 ft.
Standing 1/4 Mile: 10.8 sec / 201.8 km/h / 125.4 mph
Road Test: Motosprint Group Test Moto.Journal Moto.Revue In.Moto YB4 vs RC30 BIKE Motorrad Motorrad YB4 vs FZR750R Motociclismo YB4 vs RC30