Honda CBX250S (MC12) 1985

1985 Honda CBX250S, A Lightweight and Compact Road Sports Bike - Specs, Features, Price & Photos

Honda Motor Co., Ltd. released a road sports bike Honda CBX250S equipped with an air-cooled, OHC, 4-stroke single-cylinder engine (249cc) on a lightweight and compact body from March 15th 1985.
1985 Honda CBX250S photo.
Release date: 1985-03-15. Color: white.

Announced on February 18, 1985, released on March 15 of the same year. Model name MC12. This model was developed based on the concept of lightweight and compact design. This model is set as a high-end model of the CBX125F, has a stronger frame and body, and is equipped with a rocket-type half cowl and aluminum boomerang-type Comstar wheels. The installed MC12E engine with an inner diameter x stroke of 75.0x56.5 (mm) has changed the starting method of the MD16E RFVC head 4-valve SOHC engine installed in the MD16 XLR250R from a kick starter to a starter motor. It has been tuned for this model.

This CBX250S frame adopts a semi-double cradle type with a lightweight and compact design. It contributes to the weight reduction of the entire vehicle body (115 kg dry weight), brings agile driving, and has good foot grounding (seat height = 76 cm), making it easy for women to handle.
The engine uses Honda's unique radial 4-valve system to create the ideal hemispherical combustion chamber. (*</ sup> RFVC = Radial 4-valve type combustion chamber) It is said that he can obtain high combustion efficiency and excellent intake / exhaust efficiency. Efficient exhaust pipes, a CV-type carburetor, and a CDI ignition system make it easy to handle in all rpm ranges, with excellent responsiveness. Fixed-ground running test value) has been achieved.

*(RFVC stands for Radial Four Valve Combustion Chamber)
As a result, Honda's 250cc class sports bikes now consist of 9 models and 13 types, meeting the needs of a wider range of customers.

Other Key Features of Honda CBX250S 1985

  • ● Body mount fairing and under cowl are standard equipment.
  • ● Equipped with high-intensity halogen headlights (60W/55W).
  • ● Front disc brake with lightweight flat disc and dual piston caliper.
  • ● Uses an automatic cam chain tensioner that eliminates the need for cam chain adjustment.

Honda CBX250S 1985 Price

Sales plan (domestic/annual) : 9,000 units planned.
National Cash Standard Price : 329,000 yen.
(Hokkaido and Okinawa prices are 9,000 yen higher. Except for some remote islands).

1985 Honda CBX250S (MC12) Main Specifications

PredessorCBX250RS (MC10)
Total length (m)1.940
Width (m)0.690
Total height (m)1.120
Length (m)1.290
Minimum ground clearance (m)0.155
Seat height (m)0.760
Vehicle weight (kg)127
Dry weight (kg)115
Capacity (person)2
Fuel consumption (km/L)60 (50km/h level running test value)
Minimum turning radius (m)2.3
TypeAir-cooled 4-cycle OHC 4-valve single cylinder
Total Displacement (cm3 )249
Inner Diameter x Stroke (mm)75×56.5
Compression Ratio9.8
Max output (PS/rpm)28/8.500
Max torque (kg-m/rpm)2.6/7.000
Carburetor modelVE07
Starting methodSelf
Ignition methodContactless CDI
Lubrication methodCombined pumping and splashing method
Lubricant capacity (L)1.6
Fuel tank capacity (L)12
Clutch typeWet multi-plate coil spring
Transmission type6 speed return
Transmission ratio1st2.769
2 speed1.722
3 speed1.272
4 speed1.041
5 speed0.884
6 speed0.785
Tire sizeFront wheel80/100-16 45P
Rear wheel90/90-18 51P
Brake system typeFrontHydraulic disc
RearMechanical leading trailing
Suspension systemFront wheelsTelescopic
Rear wheelSwing arm type
Frame formatSemi-double cradle


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