KB4RC

Racing Freedom

The KB4RC embodies racing freedom with its compact, super short-wheelbase frame and a 142 PS engine that delivers exhilarating power and laser-sharp handling. bimota’s unmatched craftsmanship meets cutting-edge performance, offering unrivaled agility and grin-inducing torque. Every metal part is meticulously machined from billet to ensure precision and quality. The KB4RC allows you to experience the pure, unrestrained spirit of racing. Feel the thrill of control, where innovation and power converge—this is freedom, unleashed.

Innovation and performance without compromise

The KB4RC bimota is unique, with an innovative aesthetic never seen before. The design is instantly recognizable as bimota and "KB4RC".

Art to guide

Down to the smallest detail, the KB4RC conveys high quality. From the handcrafted paintwork, to the alloy and carbon fiber parts, from the gold-anodized OZ forged wheels to the genuine leather saddle. The powerful motor, combined with the latest generation electronics, is another example of the high quality of the KB4RC.

Maximum lightness and extraordinary agility

An example of functionality taken to the extreme is the dry weight of the KB4RC. The frame design, a compact chassis and carefully thought-out dimensions give the KB4RC its characteristic handling.

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

191 kgs (with all the liquids except fuel)

Show all specifications

KB4RC

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

2.040 mm

Overall width

773 mm

Overall height

1.060 mm

Wheelbase

1.390 mm

Ground clearance

130 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

Mass in running order

191 kg

Start of sales

2022

Engineering Excellence Meets Striking Design

Engineering and functionality in every detail

Every component of the KB4RC has been developed to maximize functionality and minimize weight: the 1,043 cm3 Kawasaki in-line four-cylinder engine, the Brembo braking system that offers excellent stopping power and the eccentric to adjust the height of the bike integrated into the aluminum alloy swingarm.

Customizable adjustments for a tailored riding experience

The rider can make numerous adjustments to customize the KB4RC. The suspension, both front and rear, is fully adjustable and guaranteed by Öhlins components, suitable for every riding style. The position of the footpegs can be changed according to the rider's preferences.

Compact chassis and advanced engineering

The frame of the KB4RC is composite: the front trellis connects the engine to the steering head, two machined aluminum plates connect the swingarm to the engine, optimizing rigidity and compactness.

Extreme agility and perfectly balanced weight

Thanks to a short wheelbase and a long swingarm, the KB4RC offers exceptional handling. The radiator under the seat allows the engine to be positioned further forward, thus achieving an extremely efficient front-rear weight distribution.