Honda CBR250RR (2017)

Honda CBR250RR

Manufacturer	Honda
Production	November 2016 – present
Assembly	Japan: Ōzu, Kumamoto Indonesia: Karawang, West Java (Astra Honda Motor – Plant 5 Assembly)
Class	Sport bike[1]
Engine	249.7 cc (15.24 cu in) liquid-cooled 4-stroke 8-valve DOHC parallel-twin
Bore / stroke	62.0 mm × 41.4 mm (2.4 in × 1.6 in)
Compression ratio	2017–2020: 11.5:1 2020–present: 12.1:1
Top speed	179 km/h (111 mph)[2]
Power	2017–2020: 28.4 kW (38.1 hp; 38.6 PS) @ 12,500 rpm (claimed);[3] 2020–present: 30 kW (40.2 hp; 40.8 PS) @ 13,000 rpm (claimed)[4] 23.74 kW (31.8 hp; 32.3 PS) @ 12,100 rpm (rear wheel)[5]
Torque	2017–2020: 23.2 N⋅m (17.1 lbf⋅ft) @ 11,000 rpm (claimed);[3] 2020–present: 25 N⋅m (18 lbf⋅ft) @ 11,000 rpm (claimed)[4] 20.09 N⋅m (14.82 lbf⋅ft) @ 11,000 rpm (rear wheel)[5]
Transmission	6-speed constant mesh, chain final drive
Frame type	Steel truss frame
Suspension	Front: Inverted 37 mm (1.5 in) Showa telescopic fork Rear: Aluminium swingarm, 5-way adjustable monoshock with Pro-Link
Brakes	Front: Axially-mounted 2-piston Nissin caliper with single 310 mm (12.2 in) disc Rear: Single-piston Nissin caliper with single 240 mm (9.4 in) disc
Tires	Front: 110/70–17 54S (tubeless) Rear: 140/70–17 66S (tubeless)
Rake, trail	24°30´, 92 mm (3.6 in)[6]
Wheelbase	1,389 mm (54.7 in)
Dimensions	L: 2,060 mm (81.1 in) W: 724 mm (28.5 in) H: 1,098 mm (43.2 in)
Seat height	790 mm (31.1 in)
Weight	165 kg (364 lb)[3] (non-ABS) 168 kg (370 lb)[3] (ABS)  (wet)
Fuel capacity	14.5 L (3.2 imp gal; 3.8 US gal)
Fuel consumption	24 km/L (68 mpg‑imp; 56 mpg‑US)[7]

The Honda CBR250RR is a CBR series 250 cc (15 cu in) twin-cylinder sport bike made by Astra Honda Motor, a subsidiary of Honda in Indonesia.^[8] It was unveiled in July 2016 in Jakarta.^[9] Production was started in November of the same year for the 2017 model year.^[10] It is the first CBR motorcycle to have a twin-cylinder engine on RR moniker. It is also the smallest Honda motorcycle to wear a CBR-RR badge. Previously, Honda also used the "CBR250RR" name for their four-cylinder sport bike sold between 1990 and 1996. The bike is officially sold in Indonesia, Japan, Hong Kong, Macau, Thailand, and Malaysia.^[11][12]

According to Honda, the CBR250RR has technologies derived from the RC213V MotoGP bike, including throttle-by-wire technology, three riding modes, and a more compact engine design than its competitors.^{[13][better source needed]}

Concept model[]

The basis for the CBR250RR was Honda's Light Weight Super Sports Concept that was shown at the 2015 Tokyo Motor Show. The concept bike had a parallel-twin engine that redlined at 14,000 rpm. Honda said that, "attention to detail in functional components give the Light Weight Super Sports Concept a quality beyond its class, indicating the design direction of Honda's next generation lightweight super sports models."^[14]

2020 update[]

The CBR250RR received an update in 2020, which included assist and slipper clutch as standard equipment. The engine is revamped within the internal parts. The compression ratio is increased by changing the piston shape, using smaller diameter balancer shaft to further increase maximum engine rotation speed in order to minimize friction loss, optimization of valve spring load, thorough reduction of friction by adding a notch at the lower end of cylinder to reduce pumping loss in the engine, addition of tin plating to the piston ring groove, adoption of high strength carburized connecting rod, optimization of the ignition timing, intake system parts, and changes to the internal structure of the muffler. This update increases the power and torque figures to 30 kW (40.2 hp; 40.8 PS) and 25 N⋅m (18 lbf⋅ft). The riding mode is also optimized to each parameter setting value. The friction of the front inverted fork is reduced and the damping force is optimized to improve handling. The quickshifter became available as an option, except for Indonesian SP model where it became standard.^[5][15]

Racing[]

As of 2017, the CBR250RR has participated in Asia Road Racing Championship at Asia Production 250cc (AP250) class. The bike produces more than 40 hp (30 kW) and weighs 135 kg (298 lb).^[16] It won the championship in its debut season as well as the following year.^[17] The CBR250RR has also been raced in the Indonesian Indospeed Race Series championship.

Performance[]

Some performance tests listed here were conducted by Otomotif tabloid from Indonesia in December 2016.^[18]

The Honda Light Weight Super Sports Concept previews the CBR250RR at the 2015 Tokyo Motor Show

The CBR250RR ridden by Gerry Salim in 2017 season of ARRC in the AP250 class. The bike won the championship its first year in the series.

References[]

External links[]

Wikimedia Commons has media related to Honda CBR250RR and Honda Light Weight Super Sports Concept.

• Official website (Japan)
• Official website (Indonesia)