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Honda has taken the wraps off its
2012 Moto3 machine

by unveiling the new
NSF250R in Japan.

CLICK HERE for more info reported on MCN

CLICK HERE for a video on the new bike on track!

CLICK HERE to read Honda's Detailed 24 page press release.

Japanese MSRP 1,840,000 YEN (plus shipping to your location)
$28,500.00 HRC MSRP USD
(YEN per USD Price will vary with currency exchange)
 February 2011 10:43NSF250R

CLICK HERE for NSR250 Catalog

Honda has taken the wraps of its 2012 Moto3 machine by unveiling the new NSF250R in Japan.

The bike has already undergone extensive testing in Japan ahead of the inaugural Moto3 series next year when the 250cc four-stroke single-cylinder category replaces the current 125GP two-stroke format.

Technical details about the new bike are sparse but in a recent interview with MCN, HRC boss Shuhei Nakamoto gave his impressions on Moto3 and how the Honda project is developing.

He said: “We have been testing at Motegi and Sugo and if you compare the lap time with a standard RS125, the percentage is 1.5 to two per cent faster with the Moto3 bike.

"This comparison is against an Aprilia works 125GP machine, so our machine is competitive with an RS kit-bike but not competitive with an Aprilia works bike."

When asked what he anticipated to be an attainable horsepower figure, Nakamoto said the priority was to ensure the new engines had long maintenance intervals to keep costs at a minimum.

He added: “Fifty horsepower will be a little difficult to achieve. With a single cylinder engine, to use higher revs the power is up but at the same time friction. But there is no need to run 16,000 rpm. I think 14,000rpm is a more reasonable level.

Horsepower will probably be around 45 or something like this. But with a super, super tune-up then fifty horsepower is achievable but at the same time engine life is short and the costs go up. Moto3 is for low cost racing and if the bikes can be competitive this is the best way.”

Several Moto3 projects are now up and running including a proposed entry from Austrian factory KTM.

Yamaha also recently confirmed it was building a bike based on its YZ250F motocross motor, as was first reported by MCN.


Power Unit

Power Unit
The 249cc DOHC liquid cooled single cylinder engine is designed under the concept “Light weight, Compact, High-Output and High-Efficiency".
A higher charging efficiency has been achieved by positioning the intake port on the front side of the cylinder and the exhaust at the rear. The cylinder has an inclining angle of 15 degrees to the rear which contributes to the concentration of mass.
Positioning the balancer-shaft above the crank-shaft has made the unit compact in overall length.

Comparison of engine output characteristics

Comparison of engine output characteristics

Frame Body

Frame Body
Although based on the RS125, the frame has a totally revised stiffness and balance for the new four-stroke unit. The new framework made of high rigidity, light weight 7000 series pressed aluminum alloy, provides optimized flexibility and superb riding control.
Revised concentration of mass has resulted in lighter weight and extra room to position a five liter air-box(excluding the oil catch tank capacity).


Model name NSF250R
Model type MR03
Overall length × Overall width × Overall height(m) 1.809×0.560×1.037
Wheelbase(m) 1.219
Ground clearance(m) 0.107
Seat height(m) 0.729
Caster angle(degree) 22°36"
Curb weight(kg) 84
Fuel tank capacity(l) 11
Engine type liquid-cooled 4-stroke DOHC single cylinder
Displacement(cm3) 249.3
Bore × Stroke(mm) 78.0×52.2
Maximum power(kW/rpm) 35.5/13,000
Maximum torque(N・m/rpm) 28.0/10,500
Oil Capacity (ENG OIL/T.M OIL) (l) 1.27/0.55
Transmission Type Constant mesh
Gear ratio 1st 1.875
2nd 1.524
3rd 1.304
4th 1.167
5th 1.077
6th 1.000
Reduction gear ratio Primary 2.952
Secondary 2.333
Devices (Intake) IACV
Fuel supply system PGM-FI
Ignition type Full-transistor
Clutch type Wet multiplate
Lubricating type Semi-Dry Sump
Tire size Front 90/580R17
Rear 120/600R17
Rim size Front 2.50-17
Rear 3.50-17
Brake Front Type Hydraulic disk
Diameter φ296
Rear Type Hydraulic disk
Diameter φ186
Suspension Front Inverted telescopic
Rear Pro-link suspension system
Frame type Aluminum twin tube