KB4

Bimota’s heritage combined with the latest technology

Vintage Inspired

A timeless tribute to bimota’s storied past, the KB4 fuses neo-retro elegance with modern precision. Its lightweight handling and café racer spirit meet the thrilling pulse of a 142 PS engine. Thanks to its innovative rear radiator layout, the KB4 achieves a short wheelbase akin to that of a 250cc machine, enhancing agility and performance. The fourth-generation KB4 proudly carries the legacy of the KB name, blending tradition with cutting-edge innovation. Designed for the streets, it captures the soul of a cherished era while delivering exhilarating modern performance. Ride the legacy. Experience the evolution.

Exclusivity

Everything about the KB4 is exclusive, a unique aspect of Vintage Inspired

High Quality

Everything about the KB4 is the ultimate in technology.
Machined from solid light alloy parts, carbon fiber components, the most usable engine in its category,
latest generation electronics, forged wheels, hand painted, real leather saddle.

Every single detail is part of the design.
Mechanical jewels, “ art to be seen as well as driven! ”

Efficiency

Low weight is the best secret to enjoy handling.
Ride the KB4 and feel the differences, no other bike handles like a Bimota.
Italian artistic sensibility, old-fashioned craftsmanship and ultra-modern materials.

Drive an exclusive Italian art icon.

Technical Information

Max. Power

104,5 Kw / 142 hp
@10.000 r/min

Max. Torque

111 Nm / 81,86 lbf-ft
@ 8.000 r/min

Weight

189 kgs (with all the liquids except fuel)

Show all specifications

KB4

Technical Information

Engine

4-stroke, 4-cylinder, DOHC, 4-valve, liquid-cooled

Displacement

1.043 cc / 63.65 cu-in

Bore x Stroke

77.0 x 56.0 mm / 3.03 x 2.20 in

Compression ratio

11.8:1

Power

104.5 kW / 142 hp @ 10.000 r/min

Torque

111 Nm / 81.87 lbf-ft @ 8.000 r/min

Fuel system

DFI® (Digital Fuel Injection) 4 x Ø 38 mm throttle bodies, oval secondary throttle valves

Euro5

CO2 emission

159 g/km,

Fuel consumption

5.5 l/100km

Ignition

Digital

Ignition timing

10°BTDC @ 1.100 r/min - 40.2° BTDC @ 5.200 r/min

Spark plug type

NGK CR9EIA-9

Gap: 0.8 - 0.9 mm / 0.031 - 0.035 in

Starting system

Electric starter

Firing order

1-2-4-3

Lubrication system

Forced lubrication, wet sump

Engine oil type

API SG, SH, SJ, SL or SM, with JASO MA, MA1 or MA2

Viscosity: SAE 10W-40

Capacity: 4.0 L (4.22 US qt)

Coolant capacity

2.5 L (2.64 US qt)

Transmission

6-speed, return shift

Clutch

Wet, multi-disc, manual

Final drive

Sealed chain drive

Primary reduction ratio

1.627 (83/51)

Final reduction ratio

2.733 (41/15)

Overall drive ratio

4.925 (Top gear)

Gear ratio

1st: 2.600 (39/15)

2nd: 1.950 (39/20)

3rd: 1.600 (24/15)

4th: 1.389 (25/18)

5th: 1.238 (26/21)

6th: 1.107 (31/28)

Front suspension

Öhlins front fork FG R&T 43 NIX30, compression and rebound damping adjustability, adjustable spring preload, with top-out spring

Wheel travel 130 mm (5.11 in)

Rear suspension

Aluminum alloy billet swingarm, Öhlins TTX36 nitrogen gas-charged shock with piggyback reservoir, compression and rebound damping adjustability, hand-adjustable spring preload, top-out spring

Wheel travel 122 mm (4.80 in)

Front brakes

Dual radial-mount, opposed 4-piston Brembo Stylema® calipers, dual semi-floating 320 mm discs, KIBS ABS

Rear brake

Opposed 2-piston Brembo caliper, single 220 mm disc, KIBS ABS

Frame type

Front frame trellis Hi-tensile steel, aluminum alloy billet plates

Rake/Trail

24.0° / 100.8 mm (3.96 in)

Overall length

2.050 mm (80.70 in)

Overall width

774 mm (30.47 in)

Overall height

1.150 mm (45.27 in)

Ground clearance

140 mm (5.51 in)

Seat height

810 mm (31.89 in)

Wet weight

189 kg* / 416.67 lb

*Dry weight with all liquids except fuel, no accessories

Curb mass

194 kg* / 427.70 lb

*Curb mass includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90 percent capacity) and tool kit (if supplied)

Fuel capacity

19.5 L / 5.15 gal

Wheelbase

1.390 mm (54.72 in)

Tire size

Front: 120/70ZR17 M/C (58W)

Rear: 190/50ZR17 M/C (73W)

Rim size

Front: J17 M/C x MT 3.50

Rear: J17 M/C x MT 6.00

Technology

IMU-Enhanced Chassis Orientation Awareness, Kawasaki Cornering Management Function (KCMF), Kawasaki Traction Control KTRC (3-MODE), Power Modes, Brembo Stylema Calipers, Öhlins Steering Damper, Kawasaki Intelligent anti-lock Brake System (KIBS), Kawasaki Quick Shifter (KQS) (upshift & downshift), All Led Lightning, Full-Colour LCD TFT screen, Electronic Cruise Control, Assist & Slipper Clutch.

Engineering Excellence Meets Striking Design

KB4: Pure emotion

When you take a corner on the KB4, you're thrilled by the incredible handling. Twisting the throttle results in a smooth, powerful response that excites the senses. For Bimota, it is important to convey enthusiasm to the rider. Not only when riding, but also when you carefully observe your motorcycle in the garage.

Precision Handling with Side-Mounted Radiator Design

These models feature a unique frame design with a side-mounted radiator. This unconventional placement enhances weight distribution and improves handling, giving you greater stability and control on every ride.

Retro Style Meets Modern Performance

The Bimota KB4 blends retro café racer aesthetics with modern sportbike functionality. Its aerodynamic winglets, lightweight composite bodywork, and sleek, race-inspired tail enhance performance and style. The single-piece seat offers sporty ergonomics, while aluminum alloy wheels ensure agile handling.

Agile Handling and High-Tech Cockpit

The Bimota KB4 delivers agile, precise handling with its compact frame, Öhlins suspension, and powerful Brembo brakes. The cockpit features a modern TFT display, offering essential ride data, while ergonomic controls and a quickshifter ensure a seamless, performance-focused experience.