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

Frame type

Front frame trellis made by Hi-resistance steel with Aluminum alloy plates billet machined

Engine type / Valve system

4 stroke, 4 cyl, DOHC, W/C, 4 valve

Displacement

1.043 cm³

Bore x Stroke

77 mm × 56 mm

Compression ratio

11,8:1

Max. power

104,5 kW (142HP) / 10,000 rpm

Max. torque

111N・m (11.3kgf・m) / 8,000rpm

Fuel system

38 mm throttle bodies(4), Euro 5

Fuel capacity

19.5 lt.

Trasmissions

6 marce

Gear Ratio

1° 3.188(51/16); 2° 2.526(48/19); 3° 2.045(45/22); 4° 1.727(38/22); 5° 1.524(32/21); 6° 1.348(31/23)

Lubrication system

Forced Lubrication (wet sump)

Primary reduction ratio

1.627 (83/51)

Final reduction ratio

2.733 (41/15）

Clutch type

Wet, multi-disc

Frizione

Multidisco in bagno d’olio

Rapporti di Trasmissione

1^ 2.600(39/15); 2^ 1.950(39/20); 3^ 1.600(24/15); 4^ 1.389(25/18); 5^ 1.238(26/21); 6^ 1.107(31/28)

Engine oil capacity

4.0 lt

Overall length

2.050 mm

Overall width

774 mm

Overall height

1.150 mm

Wheelbase

1.390 mm

Ground clearance

140 mm

Seat Height

810 mm (+/- 8 mm)

Rake angle / Trail

24° / 100,8 mm

Front suspension

Öhlins front fork FG R&T 43 NIX30

Wheel travel

130 mm

Rear Suspension

Aluminum alloy Swingarm billet with Öhlins ttX 36

Rear Wheel Travel

122 mm

Front tire

120 / 70Z R17 Pirelli DIABLO™ Supercorsa V3 SP

Front wheel size

Forged J17M/C×MT3.50

Rear tire

190/50ZR17 Pirelli DIABLO™ Supercorsa V3 SP

Rear wheel size

Forged J17M/C×MT6.00

Front dual

Disc 320 mm

Rear single

Disc 220 mm

Curb weight

194 kg

Start of sales

2022

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.