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Superior Fire Power
The '04 Suzuki RM250 was awesome, dominating magazine shootouts with unmatched performance and laser sharp handling creating a winning balance that simply outclassed the competition in every way. For 2005, the Suzuki RM250 is thoroughly modified to crank out more low-end and mid-range power than ever, with power delivery that's smooth and controllable.
Of course, when our engineers get on a roll, there's no stopping them. They also refined the RM250's suspension front and rear, making it more stable and responsive on tight, technical tracks and plusher on rough, wide open courses. And if you thought this lightweight machine couldn't get any lighter, think again. Our engineers shaved weight off parts from top to bottom, making the 2005 machine a true featherweight.
The best thing about this year's RM250, though, is what stays the same. It still offers a better combination of power and handling than any competitor on the track. And that's a winning combination you can use to take home the gold!
Redesigned combustion
chamber with reduced squish height for
improved combustion efficiency and throttle
response Improved
cylinder port design - upper corners
of main exhaust ports raised and wider
secondary scavenging ports for improved
engine response from mid to high rpm
Revised exhaust valve
and sub-exhaust valve timing, plus redesigned
main exhaust valve spring and governor
spring for improved low to mid rpm power
output and response
Refined crankcase design
with additional internal reinforcement
ribs for added durability
New crankshaft main
bearing retainer - keeps main bearings
in place when crankcase is split for
quicker, easier maintenance Crankshaft
inertia increased 3% for improved rear
wheel traction control and power delivery
New transmission input
shaft featuring 18 involute-type splines
on clutch side, plus lighter clutch
spring rate - combined features provide
lighter, more controllable clutch operation
and feel
Refined kick start lever
and internal components for easier engine
starts - involute-type splines added
to kick start shaft and starter ratchet
gear for quicker, more reliable gear
engagement, plus reshaped kick start
lever for easier kick start operation
Refined kick start lever
and internal components for easier engine
starts - involute-type splines added
to kick start shaft and starter ratchet
gear for quicker, more reliable gear
engagement, plus reshaped kick start
lever for easier kick start operation
New steering head
cap seal added for improved steering head
bearing protection
New titanium footpegs for reduced weight
Updated swingarm design
featuring a new bridge tube behind the
pivot section for increased rigidity
and improved straight-line performance
Improved front fork
performance: Honed internal surface
of the inner tube for smoother fork
movement Larger oil capacity above piston
and shim stack for improved oil low
at full travel Improved dust seal Refined
valve settings for better overall suspension
balance Improved rear shock performance:
Larger inner rod diameter for increased
oil flow at full compression Refined
valve settings for better overall suspension
balance
Redesigned chain guide
for reduced weight
New seat cover material
for improved grip, plus new seat foam
for improved durability
Smaller front brake
hose O.D. and Allen-style brake hose
bolts for reduced weight
Shorter rear brake hose
and hex-style brake hose bolts for reduced
weight
Improved rear brake
caliper design: Higher rigidity for
more consistent caliper piston movement
and feedback More even brake pad wear
Brake pad insulator
attached directly to the pad to further
reduce weight
Hex-style rear brake
pad pins for easier brake pad maintenance
Redesigned rear brake
disc cover with external mounting bolts
for easier maintenance and reduced weight
New air/oil separator
added to rear master cylinder for more
stable brake performance, plus new hex-style
8mm reservoir cap mounting bolts and
5mm master cylinder mounting bolts for
easier maintenance
Master cylinder control
rod threaded directly to the rear brake
pedal yoke eliminating lock-nut clamp
to reduce weight
New aluminum handlebars
- more rigid than steel construction
to reduce vibration - includes Suzuki
handlebar pad
New aluminum mounting
spacers designed for easier installation
and more secure mounting of radiator
shrouds, frame covers and fenders
| Engine: | 249cc, two-stroke, single cylinder, liquid cooled, AETC, piston reed |
| Bore Stroke: | 66.4 x 72.0mm |
| Compression Ratio: | 8.8:1/10.6:1 |
| Fuel System: | KeihinT PWK38S |
| Lubrication: | Premix |
| Ignition: | Digital CDI |
| Transmission: | 5-speed |
| Final Drive: | #520 chain |
| Overall Length: | 2175mm (85.6 in.) |
| Overall Width: | 840mm (33.1 in.) |
| Overall Height: | 1280mm (50.4 in.) |
| Seat Height: | 950mm (37.4 in.) |
| Ground Clearance: | 350mm (13.8 in.) |
| Wheelbase: | 1470mm (57.9 in.) |
| Dry Weight: | 96kg (212 lbs.) |
| Suspension Front: | Telescopic, 20 compression & 18 rebound settings, 11.8 inches (300mm) of wheel travel |
| Suspension Rear: | Link-type, spring preload fully-adjustable, 3 high-speed, 16 low-speed compression settings, 18 rebound settings 12.6 inches (320mm) of wheel travel |
| Brakes Front: | Single hydraulic disc |
| Brakes Rear: | Single hydraulic disc |
| Tires Front: | 80/100-21 51M |
| Tires Rear: | 110/90-19 62M |
| Fuel Tank Capacity: | 8.0 liter (2.1 gal.) |
| Color: | Yellow |
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