Suzuki RM 250 — First Test — Review — Dirt Rider — Dirt Rider Magazine

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Suzuki RM 250 – First Test Review – Dirt Rider

February 24, 2009

Stealth makes warplanes all but invisible to the They’re smooshed before know the airplanes are in the neighborhood. is practicing its brand of stealth with the 2003 RM250. sort of hide-in-plain-sight stealth. The ’03 is sitting right in showrooms and be on starting lines loaded newfound firepower, and externally no hint at its potential.

That’s why Rider is calling a glowing motocrosser a “stealth” weapon. from the usual bold new it will take a careful eye to major changes. Trained will pick up on the new hole in the brake discs and note versions of the sidepanel vents Suzuki’s works bikes this year.

Once you inside the bike, though, conclude the engineers were way too on the inside to change the outside.The engine received far-reaching and the on-track performance confirms every change was … on This bike is an easily missile, with propulsion to any past RM. Suzuki sent to the ergonomic division, and even they only perfected the the end (pardon the pun) result is

We’d have been with RM’s battle if Suzuki had stopped there, but it Kayaba to accomplish covert within the support units.Suzuki is it has the weaponry to rule the moto and after this initial we aren’t counting the company In fact, we’ve looking to the war games (AKA our annual to learn the final outcome.Suzuki to debut the ’03 machine near the California town of Susanville at Wosick’s Honey Lake track.

The largely natural-terrain track has dirt over a hard that offers good as well as many uphill that test the engine well. Additionally, there is a uphill that makes the one at Mountain seem like a hill! Suzuki was confident in the factor of the new bike, or it would turned around and gone after seeing the track.

Its is understandable. Even with Bridgestone M70 rear tires on the (temporarily in place of the M601/M602 the RM has instant throttle response and hard in the deep dirt. The runs strong in each and from gear to gear. The one was the giant uphill. The RM would fourth up the hill, but with a rider it was necessary to wind gear tight before to get strong acceleration in fourth

That’s pretty amazing since the steepest grade at 4200 feet elevation–and another 400 feet in elevation!On any of the track that resembles a motocross track the engine up each gear effortlessly the stock gearing.So for turns and the bike has plenty of hard-hitting but power. There were jump sections as well, and the new has all the snap the heroes will to clear technical stadium-type At the same time, the hit isn’t too for novice pilots.

Part of the congeniality of the new powerplant is due to the in the transmission and clutch. The gear a Suzuki strength–is very and crisp with zero shifts.

Honey Lake’s straights tempted riders to rev the until it went flat, and they experienced a slight to shift without backing There were no hitches the clutch. The new plates engage but totally, and the clutch never to get hot or temperamental.

A side benefit is the shim included in the 2002 pack is no longer needed, so rebuilds should be needed frequently and be easier to accomplish they are required.

Honey has corners with big banked and others that cut up into and smaller berms. The RM chassis–like year’s–is king of the tight, turns, yet the suspension control the bike calm in the faster turns.

Even with the prepped, Honey Lake had examples of acceleration chop and braking bumps, and the RM was serene and over both. Some of the braking bumps were on the so we went two clicks stiffer on the compression and one click in on the shock Those were the only changes that a 195-pound and a 180-pound intermediate required.

Nice.Even with the suspension an excellent job, the RM chassis is an quick handler. The bike is suited to riders who aren’t or reckless in their approach to input. No question, though, this RM250 has the widest of rider appeal of any RM250 in a or more. The package is a complete and one.

It has no glaring faults on the side, and on the positive side of the are the great motor, supple, suspension and comfy ergonomics for a range of body types. Who if you can’t see the changes from the Let’s hear it for stealth!


•Engine performance is with good torque everywhere in the rpm range

•Throttle is excellent

•New seat changing rider position and saves rider from

•Handling is quick and precise excellent turning

•Suspension is supple, yet has nicer bottoming

•Bike feels light and for easy handling

•Graphics are so they last longer


•Engine likes jetting. One clip position the difference between clean or throttle response

•Stock bar a little low

•Front brake be a little more powerful

•Reshaped main port increased downslope

•Sub ports are now square instead of

•Scavenging ports are all moved reshaped

•Boost port from the intake port

port is reshaped and the reed-valve passage is narrowed from 82 to

•The intake manifold is to match the new reed valve The valve system is nearly with cam-operated side valves. The main and side valve now open at different

•The exhaust valve is redesigned for more precise

•The piston is now domed of flat-topped) with a single intake cutaway in the skirt in of two wider-spaced holes.

•The is heavier for more tractable delivery

•The crank end is (38 to 28mm) for reduced seal

•The water pump is to be more efficient, lighter and

•Airbox is 20 percent larger a shroud to prevent radiator-heated air entering, and with a cool-air in each sidepanel. Cooler air to the generates better throttle

Suzuki AN 250

•Driven clutch plates are (3.15 to 3.00mm) and fiber have new material for less

•Shift pawl pin is now shouldered to into the pressure spring than sit on top of it

•The transmission now have involute splines (18 and 23 slightly rounded splines in of six large rectangular splines on shaft) for more precise

•Minor changes to the subframe necessary to fit the new airbox and improve

•The mounting point for the new pedal is raised for increased clearance in turns

•KYB no longer has bladder or hydraulic control. A bump-stop bottoming is used, and travel is reduced

•The fork’s compression-damping has straighter oil passageways

•A oil passage from the compression to the shock body is eliminated for damping at low shaft speeds

discs have holes than slots•Footpegs are 10mm drain better and have a wide mounting boss

rim is thicker at the edges and in the middle for durability

•The front spacer has a lip to make putting the back on easier

•Rear cylinder is lighter

•Seat is thicker (from 0.9 to 1.1mm) and foam is eight percent


It’s been years since Suzuki a 250cc motocrosser this Most years the weakness has in the power output, but there years I didn’t get along the suspension. The ’03 motor is an easy-to-ride It pulls hard everywhere in the It will pull a tall or rev equally well.

The suspension the track abuse at bay, and the new is a great place to spend moto time. It could a place in my garage with no

–Karel Kramer/6’1″/195 lb/Novice

Having ridden an ’02 RM250 the entire season last I have a sensitive feel for the of that bike. When I on the ’03 machine, I instantly noticed the boost in the bottom and midrange For this year’s introduction, took us to Honey Lake track, which is located in elevation and is dominated by the biggest on any MX course I’ve ever

The Suzuki had no problems and almost fourth up the entire massive Top-end was about the same, but due to its bark, the ’03 is happiest when in a taller gear. The suspension is improved over last with plush action and rear. On hard slap-down the ’03 fork was much plusher, more of the shock. The chassis similar to the ’02 bike’s and features the comfortable ergonomics.

With a of rides under my belt, I the new RM250 could be a major contender.

–Jason Webb/5’10″/175

Suzuki AN 250
Suzuki AN 250
Suzuki AN 250
Suzuki AN 250

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