Model history
The chronology of the models is as follows:
| Years | Model | Description |
|---|---|---|
| 1986 | CBR250FG and CBR250FG-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 new redesigned bike that features a new cast/pressed aluminium frame that gives a more aggressive riding position, gull shaped swing arm that was adopted from theNSR250, higher rising tail, six spoke cast aluminium wheels and dual front Ø276 mm floating disk brakes. These changes resulted in a dry weight of 142 kg. The only feature that was adopted from the previous model CBR250s was the original MC14E engine. This too was slightly modified with a crankshaft that featured Ø27.5 mm small-end journals, up Ø0.5 mm from the previous Ø27 mm journals. The engine also uses a completely new set of VP carburetors that feature smaller throats reduced from Ø32 mm to Ø30.5 mm. These carburetors are now 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 now restricted to producing 40 ps (30 kW) due to changes in Japanese law. The restrictions are in the cylinder head, head gasket and ignition unit, and all need to be replaced if 45 ps (34 kW) is desired. Redline reduced to 18,500rpm. |
| 1997-1999 | CBR250RR(RII) (MC22). | These are identical to the RR(R), and are leftover bikes that were built in the 1994 to 1996 era, but sold in 1997 and 1998. |
[edit]Bike Details
These bikes were only ever sold new in Japan, and later the CBR250RR was sold new in Australia. They however can be found in almost any country of the world, and in a number is the most powerful 4-stroke bike a learner is allowed to ride, and hence their popularity. The CBR250RR has six gears, and revs just under 9,000 rpm at 100 km/h. Despite the high revs, the bike requires little maintenance, and should easily last 100,000 km with regular oil changes (over 1/2 a billion revolutions). The engine is somewhat unusual in that it uses gear driven cams, further reducing maintenance requirements.
The models most commonly grey-imported into Australia were the MC22 and MC19 models. The earlier MC14 and MC17 are quite rare. During the mid 90's there was a collapse in the Japanese 250cc bike market due to a sudden change in licensing regulations allowing riders on the previous 250cc license class to ride bigger bikes. The excess new bikes (MC22 CBR250RR (R) and (R-II) models) were shipped to Australia by Honda MPE where they were sold as part of the company's official lineup. [1] This has proven quite useful to owners of grey-market imported CBR250RR's seeking spare parts.
The CBR250RR(R) is frequently 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 featured 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.
[edit]Specifications
All specifications are manufacturer claimed except as stated.
| Model | MC14 | MC17 | MC19 | MC22 | |
|---|---|---|---|---|---|
| Year | 1986 CBR250FG and FG-YA | 1987 CBR250R (H) | 1988-1989 CBR250R (J) and (K) | 1990-1993 CBR250RR (L) and (N) 'Jap spec' | 1994-1999 CBR250RR (R) and (R-II) '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 x 33.8 mm | ||||
| Power | 45 hp (34 kW) @ 14,500 rpm | 45 hp (34 kW) @ 15,000 rpm | 40 hp (30 kW) @ 14,500 rpm | ||
| Maximum torque | 2.6 kg-m @ 10,500 rpm | 21.5 Nm @ 12,000 rpm | 23.5 Nm @ 11,500 rpm | ||
| Compression ratio | 11.0:1 | 11.5:1 | |||
| Carburetion | VG05 | VP 20 | |||
| Transmission | 6-speed | ||||
| Final drive | 0-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 | 1345 mm | |||
| 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 | 14L | 13L | |||
| Seat Height | 725 mm | 735 mm | |||
| Dry Weight | 142 kg (310 lb) [2] | 143 kg (320 lb) | |||
| Wet Weight | 157 kg (350 lb) | 158 kg (350 lb) | |||
| Fuel Economy | 16–20 km/L* | 2.5L/100 km Honda Figure3.9-5.0 L/100 km* | |||
| Top speed | 175kmh flat 190kmh downhill* | 190-200kmh | 165kmh[3] | ||
| Headlights | Single front Headlight | Dual front Headlights | |||
| Market Availability | Japanese Domestic Market | Japanese Domestic Market and frequently grey-imported into Australia | Australia and Japanese Domestic Market | ||
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