At the heart of the 2025 Bimota KB4RC sport motorcycle, Bimota features a 1043 cc (63.6 cu in) liquid-cooled in-line four, four-stroke configuration. In factory specification, peak output is rated at 142 HP (103.6 kW) at 10,000 rpm while maximum torque reaches 111 Nm (81.9 lb-ft) at 8,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 136.1 HP per liter and a 2,000 rpm working window between peak torque (8,000 rpm) and peak power (10,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the KB4RC measures 194 kg (428 lbs) wet (curb), translating to a power-to-weight ratio of 0.73 HP/kg (1.37 kg per horsepower). Rider ergonomics and chassis geometry center around a 802 mm (31.6 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,390 mm (54.7 in) wheelbase engineered for quick, flickable steering geometry. The 19.5-liter (5.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Bimota archive, this model family spans 2 indexed model years from 2022 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
136.1 HP/L
Power-to-Weight
0.73 HP/kg (1.37 kg/HP)
Power Band Window
8,000–10,000 rpm
Standover Height
802 mm (31.6 in)
Engine
Displacement1043.0 ccm (63.64 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsKawasaki enegine
Power142.0 HP (103.6 kW)) @ 10000 RPM
Torque111.0 Nm (11.3 kgf-m or 81.9 ft.lbs) @ 8000 RPM
Compression11.8:1
Bore x Stroke77.0 x 56.0 mm (3.0 x 2.2 inches)
Valves/Cylinder4
Fuel SystemInjection. 4 x 38 mm throttle bodies
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
LubricationForced Lubrication, wet sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet, multi-disc
Performance
Emission DetailsEuro 5
Chassis
Frame TypeFront frame trellis made by Hi-resistance steel with Aluminum alloy plates billet machined
Rake24.0°
Trail101 mm (4.0 inches)
Front SuspensionÖhlins front fork FG R and and T 43 NIX30
Front Travel130 mm (5.1 inches)
Rear SuspensionAluminum alloy Swingarm billet with Öhlins ttX 36
Rear Travel122 mm (4.8 inches)
Wheelbase1390 mm (54.7 inches)
Ground Clearance140 mm (5.5 inches)
Wheels & Brakes
Front Tyre120/70-Z17
Rear Tyre190/50-ZR17
Front BrakesDouble disc
Front Brake Ø320 mm (12.6 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
WheelsPirelli Diablo Supercorsa V3 SP tires
Dimensions & Weight
Weight incl.194.0 kg (427.7 pounds)
Seat Height802 mm (31.6 inches) If adjustable, lowest setting.
Alt. Seat Height818 mm (32.2 inches) If adjustable, highest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
