Honda CBR250

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This article is about the 1986–1996 Japanese domestic market four-cylinder sport bike. For the 2011 single-cylinder model, see Honda CBR250R (2011).
Honda CBR250
JoshHarrisCBR2.jpg
CBR250RR with aftermarket paint job
Manufacturer Honda
Also called CBR250 (FG), (FG-YA), (H), (J), (K), (L), (N), (R), (R-II)
MC14, MC17, MC19, MC22
Production 1986–1996
Class Sport bike
Engine 249 cc (15.2 cu in) 4-stroke, inline-4
Top speed limited to 185 km/h (115 mph)
Power 40–45 PS (29–33 kW)[1]
Weight approx 142 kg (313 lb)[2] (dry)
approx 157 kg (346 lb)[2] (wet)

The Honda CBR250 series of motorcycles was produced by Honda between 1986 and 1996. It is a lightweight sport bike with a six-speed gearbox and a 250 cc (15 cu in), four-cylinder, four-stroke engine capable of revving up to 19,000 rpm. In 2011, Honda introduced the completely new CBR250R with a much less powerful single-cylinder engine that revs up to 10,500 rpm, made in Thailand and marketed worldwide.[3]

Model history[edit]

Years Model Description
1986 CBR250 (FG) and (FG-YA)
MC14
Twin front disks, single front headlight, bikini fairings.
1987 CBR250R (H)
MC17
Twin front disks, still single head light, full fairings.
1988 CBR250R (J)
MC19
Single larger front disk, smaller chain, twin head lights, fuel pump.
1989 CBR250R (K)
MC19
Essentially identical to the R(J), except now had a speed limiter which was set at 185 km/h.
1990–1991 CBR250RR (L)
MC22
A completely redesigned bike that had a new cast/pressed aluminum frame that gave a more aggressive riding position, gull shaped swing arm that was adopted from the NSR250R, higher rising tail, six spoke cast aluminum wheels and dual front 276 mm (10.9 in) floating disk brakes. These changes resulted in a dry weight of 142 kg (313 lb). The only feature that was adopted from the previous model CBR250s was the MC14E engine. This was slightly modified with a crankshaft that had 27.5 mm crankpins, up 0.5 mm from the previous 27 mm size. The engine also used a completely new set of VP carburetors that had smaller throats, reduced from 32 mm to 30.5 mm. These carburetors were fed by a vacuum operated pump for fuel delivery.
1992–1993 CBR250RR (N)
MC22
Essentially the same as the RR(L) except for new paint jobs.
1994–1996 CBR250RR (R)
MC22
Still very similar to the RR(L/N) but restricted to producing 40 PS (29 kW) due to changes in Japanese law. The restrictions were in the cylinder head, head gasket and ignition unit. Redline reduced to 18,500 rpm (from 19,000 rpm).

Bike details[edit]

Initially these bikes were only sold new in Japan, and later the CBR250RR was sold new in Australia. But they can be found in almost any country of the world. In countries which have a 250 cc learner capacity limit, the CBR250RR is one of the most powerful 4-stroke bikes a learner is allowed to ride.[citation needed] The CBR250RR has six gears, and revs just under 9,000 rpm at 100 km/h (62 mph). The engine uses gear-driven cams which gives the bike a uniquely identifiable characteristic 'whine' that varies with engine-speed.

The bike has a partially exposed aluminium frame and swing-arm. The suspension on the bike was basic with non-adjustable front forks and a rear monoshock with adjustment for preload only.

The CBR250RR(R) is known as the 'tri-colour' due to the fact that most (but not all) of the official bikes came in that particular colour scheme. Other than the engine restrictions, this model had several additional differences to its predecessors (L & N models). The bike had more powerful low-beam headlights coupled to a new relay which was automatically deactivated by the start/crank button on the handlebar. This changed the pinout of the switchgear and kill-switch. The carburettor rubber boots were smaller on the CBR250RR(R) than the imports.

Specifications[edit]

All specifications are manufacturer claimed except as stated.

Year 1986 1987 1988–1989 1990–1993 1994–1999
Model CBR250 (FG) and (FG-YA)
MC14
CBR250R (H)
MC17
CBR250R (J) and (K)
MC19
CBR250RR (L) and (N)
MC22
'Jap spec'
CBR250RR (R) and (R-II)
MC22
'Tri-colour'
Engine type MC14e - 4-stroke - 16-valve - Liquid-cooled - Inline four
Displacement 249 cc (15.2 cu in)
Bore/stroke 48.5 mm × 33.8 mm (1.91 in × 1.33 in)
Power 45 PS (33 kW) @ 14,500 rpm 45 PS (33 kW) @ 15,000 rpm [1] 40 PS (29 kW) @ 14,500 rpm [1]
Compression ratio 11.0:1 11.5:1
Fuel Delivery VG05 VP 20
Transmission 6-speed
Final drive O-ring Chain
Rake/trail Rake & Trail Angles: 24° / 89 mm
Front Tire Size 100/80-17 110/70-17
Rear Tire Size 140/70-17 140/60-17
Wheelbase 1365 mm 1,345 mm (53.0 in)
Front Brake Type Dual disc 2-piston calipers Single disc Dual 275 mm discs with 2-piston calipers
Rear Brake Type Single disc 1-piston caliper 220 mm disc with 1-piston caliper
Fuel Tank Capacity 14 l (3.1 imp gal; 3.7 US gal) 13 l (2.9 imp gal; 3.4 US gal)
Seat Height 725 mm (28.5 in) 735 mm (28.9 in)
Dry Weight 142 kg (313 lb)[2] 143 kg (315 lb)
Wet Weight 157 kg (346 lb) [1] 158 kg (348 lb) [1]
Fuel Economy 40.0 km/L (113 mpg-imp; 94 mpg-US) Tested at 60 km/h (37 mph)[2]
Headlights Single front headlight Dual front headlights
Market Availability Japanese domestic market Japanese domestic market Australia and Japanese domestic market

Note: Many sources incorrectly list the dry weight of the CBR250RR as being about 157 kg (346 lb). This is the wet weight.[2]

See also[edit]

Notes[edit]

  1. ^ a b c d e Official English Honda Service Manual for CBR250 series
  2. ^ a b c d e [1] Honda Japan's official CBR250RR fact book in Japanese
  3. ^ Ash, Kevin (2011), Honda CBR250R review, Ash on Bikes, retrieved 2011-03-17 

References[edit]