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2010 Suzuki RMX450Z First Look

Thursday, June 25, 2009
The 2010 RMX450Z is full of the same technology as Suzukis motocross bike  the RM-Z450.
The new Suzuki enduro uses the same 449cc liquid-cooled engine as the RM-Z450.
The 2010 RMX450Z
Suzuki borrows technology bred in its able motocross motorcycle, the RM-Z450, and injects it in its new enduro, the 2010 RMX450Z.
KTM backs out of Dakar? No problem. Enter the RMX450Z. Suzuki is throwing its hat back into the enduro ring with the release of its 2010 RMX450Z. The off-road motorcycle shares much of the same DNA as Suzuki’s RM-Z450, including its 4-stroke, liquid-cooled 449cc engine. The DOHC lump does have a few tweaks, like a modified inlet tract and revised cam profiles aimed at increasing low and mid-rpm power, while the 5-speed constant mesh transmission has wider gear ratios. It’s also got a new engine protector plate to defend against obstacles enduro riders might encounter. The RMX450Z’s frame, suspension, and bodywork meanwhile are also almost identical to the RM-Z450.
"The public has been asking us for this bike for some time now, so it's a bike whose time has come,” said Suzuki Great Britain’s David Taylor.

In its conversion from motocrosser to enduro, Suzuki outfitted the RMX450Z with an electric starter and a lighting kit. It does have a back-up kick start, though, and is equipped with a large magneto-generator that charges the battery and powers the lights. Other road-friendly goodies like a side kickstand and digital instruments delineate the enduro from its MX brother. The instrument cluster has a standard and sport mode, with the standard mode displaying speed, time, two trip lengths, and voltage, while the sport mode is more specialized, displaying the timer, tripmeter, average speed and tire-diameter correction. It also comes with a low fuel light because running out of gas in the middle of nowhere is never fun.

The RMX-450Z will sport an 18-inch rear wheel that caters to serious enduro off-road riding. Showa supplies the suspension, with an adjustable 47mm telescopic fork teamed with a Showa piggyback reservoir-style rear shock with two-way adjustable rebound damping and preload adjustments. The suspension’s spring rates have been retuned to meet enduro demands.

Suzuki’s newest off-road motorcycle features the proven Keihin fuel injection system from the RM-Z. The only noticeable difference is that the enduro’s airbox comes with a hinged lid to make it easier to maintain and to try and keep dust out better.

The 2010 RMX450Z sports the slim, aggressive styling of its motocross counterpart, and weighs in with a claimed curb weight of 272.3 lbs. Its 1.6-gallon tank is the same size as the RM-Z450, which begs to question why the enduro didn’t get a little larger fuel cell to give it a broader range. Regardless, Suzuki is back in the enduro game with its new fo’-fifty, and we can’t wait for our first ride.
2010 RMX450Z Specs
Suzukis latest enduro has similar ergos to the RM-Z450  maintaining the motocrossers slender design.
Overall Length: 86.0 in.
Overall Width:  32.7 in.
Overall Height:  50.0 in.
Wheelbase: 58.3 in.
Ground Clearance: 12.6 in.
Seat Height: 37.6 in.
Curb Weight: 272.3 lbs.
Engine: 4-stroke, liquid cooled, DOHC
Bore/Stroke: 96.0 X 62.1mm
Displacement: 449 cc
Compression Ratio: 11.6:1
Fuel System: Fuel Injection
Lubrication: Suzuki Advanced Sump System
Clutch: Wet multi-plate type
Starter: Electric and Manual
Transmission: 5-speed constant mesh
Primary Reduction Ratio: 2.708 (65/24)
Gear Ratios:
 1st 2.153 (28/13)
2nd 1.611 (29/18)
3rd 1.250 (25/20)
4th 1.000 (19/19)
5th 0.826 (19/23)
Final Reduction Ratio: 3.923 (51/13)
Front Suspension: SHOWA 47mm telescopic forks, pneumatic/coil spring, oil damped
Rear Suspension: Swingarm, link type, SHOWA piggyback-reservoir shock
Caster: 29°18’
Trail:  5.1 in.
Front Brake: Disc
Rear Brake; Disc
Front Tire: 80/100-21
Rear Tire: 110/100-18
Fuel Tank: 1.6 US gal.
Body Color: Sold Black/Champion Yellow No. 2 (GY8)
2010 Suzuki Off-Road Motorcycles
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devlin -rmz450  November 12, 2010 07:02 PM
just want to know what top speed of the rmx450 when pined in 5th gear.with stock gearing
justin -Picked up my rmz 450  August 24, 2010 05:37 AM
test rode one of these, was like a gift from the gods, i owned a klx650r bombed up making good power etc. got on this bike , and sold my klx. i now own one with 0 kms. first ride this weekend, just registered it(rec) . time to run the beast in.should be a hell of a ride.... i feel the same , in the sea of red and orange i wanted to be diffrent. ims do a 2.6 gallon tank for it. we'll see how much riding i do . go the zooks
Sam -Top speed  July 10, 2010 10:07 PM
And it hoons!!!, I went 2 teeth bigger on the back sprocket just to have a bit of fun, and i had it at 150 km/h before i had to slow down for a corner
Sam -Rmx's weight  July 10, 2010 10:02 PM
I love my rmx, the power is perfect for enduro. I've oly ever used motocross bkes for enduro riding and te rmx is my first everproper enduro bike and it is miles above anything I've ever ridden. And on the weight issue, people just need to harden up, come on, im only 16 and i havnt got a problem with the weight, and it feels suprisingly light at speed and between trees
SAFFA -Grumpy old men  May 24, 2010 03:54 PM
Im picking up my rmx on Thursday . Seems like all you guys want to do is talk about your ktm's and yamaha's. Fuel injection is the future. I'll be happy to be the only yellow bike in a sea of orange at my next enduro.
The smooth power delivery will compensate for its weight in my opinion as you wont have the bike trying to ride you and make you tired. Plus the weight stated is a fully fuelled figure. KTM is overpriced and i would prefer a fixable cable clutch anyway as opposed to hydraulic.

a dog -speed  May 5, 2010 01:58 PM
how fast can it go
a dog -speed  May 5, 2010 01:57 PM
how fast can it go
keo07 -Weight  April 13, 2010 01:18 PM
The weight of this bike is curb weight. Which means it is weighed ready to ride with a full tank of fuel which i know is only 1.6 gallons. I think that is around ten pounds. Many manufacturers do not include gas when weighed and some not even coolant. It is definently a little heavy compared to a ktm but probably closer to the rest than people think. I've seen bikes weighed the same way the manufacurers claim and be ten pounds heavier. It depends on how honest suzuki is being.
MPG -A Contrary Opinion  March 15, 2010 11:27 AM
All, I just purchased this bike and raced it the next day (literally) with only a few mods... Bark busters, removed the air flow restrictions, added a Yoshi module, and adjusted the tire pressure. The bike performed extremely well. I have an '08 RMZ and an '05 CRF450X. Don't let the weight discourage you. It has a low CG (from what I felt), especially when compared to the CRF450X (Honda claims a lighter weight than Suz, but it all must be very high on the bike, or Suzuki is being honest, take your pick). ALL the power the novice/intermediate competition rider needs is right there. The power is much more usable than the RMZ450 because it doesn't hit as hard (flywheel weight / cam profile). I pulled the front wheel off the ground on most corner exits. I'm going to keep the RMX for the woods and take the RMZ to the MX track.
Lando -What a pig!  February 23, 2010 06:41 PM
272 pounds dry? This thing needs a diet. I have an 08 rmz450 and it has a great motor for off roading. Try holding it up when it wants to fall down hill and you are going with it. When it does fall it hits hard and bends parts bad. I would assume the same or worse for the rmx. My 08 yz250 is 50 pounds lighter and I can keep it from falling with one hand using the other for balance. The yz is exciting to ride, light fast and agile. The fat rmz reminds me of my old xr400. The rmx motor and E-start will be great for off road but the bike is a pig.

Juan -Super Motard and/or Dual Sport possibilities  February 23, 2010 04:05 AM
We´re close to a FI, mid-sized, Japaneze reliability dream bike!
(Sorry KTM, been there...)
The only issue for easy mainetenance, would be more OIL CAPACITY?
Does anyone know it?
Larger tank, 17 rims, smaller sprocket are easy changes!
A shorter DRZ400SM front fork is also doable, if you must.
Lower compression is already there! We´re very close!!!
Clinton -Fuel capacity  January 27, 2010 01:34 PM
I think that the capacity is acceptable. I know a guy who has a '05 RMZ 450 and he does a full day's riding on a 1.85 gallon tank, but does carry a small spare fuel tank, just in case. EFI is more efficient, though. I do like KTM's, but they don't have a suspension linkage system (eg Pro-link - Honda etc) which is unacceptable for me.
Tim -Another mile high trail bike.  December 8, 2009 10:17 PM
I've been riding since 1972, and have raced everything from motocross and harescrambles to road racing, and I'd just like to say that in my opinion the seat heights on trail bikes during the last 20 years have just about continually been insanely high. I assume this is in the name of keeping the long travel suspension needed on race bikes, but the bottom line truth is that most average trail riders don't need all that travel. On the contrary, it is a hindrance in tight woods riding where it's important to be able to put your feet on the ground in slippery sections. ** WHY ** can't manufacturers see fit to make at least _one_ real dirt bike that is neither too tall nor an absolute PIG weight wise? I'm not asking for another KLR650 here. Far from it. What I would like to see is something along the lines of the late '70's Suzuki PE250 (2 stroke). Those were GREAT fun in the woods because they had a _reasonable_ amount of suspension travel (what I would call "medium travel"), and at the same time they were light and powerful compared to the 4 stroke bikes. We're not talking about bikes for use on the road, and I really don't care about tree hugger regulations out in the People's Republic of Kalifornia, so as long as the bikes can be used off-road in 48 states, I'm fine with it. - Now, if someone can come up with a 4 stroke bike with similar attributes (including being as light as a 2 stroke), then I'll buy it. Until then, 4 strokes are simply inferior, because one thing we're ALL gonna be doing from time to time while dirt riding is digging/pulling our bikes out of mud holes. Every pound counts when you're doing that. Okay. That's my rant for now. I've been wanting to get that off my chest for decades now, so thanks for the forum. ;-) BTW, I'm not what I would consider really short either. I'm 5'10". But while I'm thinking about it, I know a VERY significant number of people (guys and girls both) who are shorter than I am who absolutely refuse to get a dirt bike ONLY because they physically CAN NOT GET ON ONE!!! Manufacturers, do you want these people's money or not???!!? PLEASE. Build us a grown up persons trail bike that is simply a fun bike. Not a "race replica" wannabe, and not a superretard/supermoto, and not another BMW wannabe... Just a friggin' plain old late '70's type trail bike. Shoot for these numbers: Seat height not over about 32", weight not over about 220 pounds. I'm not gonna quote a horsepower number, but it needs to be respectable and usable power for steep hills. Nothing anemic, but it doesn't need to win motocross races either. Give it a fair amount of flywheel effect and relatively (but not too) wide transmission ratio. Come on guys. Not all of us have delusions of being the next supercross champion. Lose some of the suspension travel, but keep good power and light weight. Again, thanks for listening (if anyone's actually listening). ;-)
Daniel -Shrouds  November 14, 2009 02:20 PM
this is my opinion.
i say the 2010 bike shrouds look so stupid with them being smaller
keep the shrouds the same size and make the frame more durable
tc120 -efi  November 2, 2009 09:11 PM
with the efi you get much better mpg guys still a 2 gal tank would be nice
Wiss -New DRZ?  October 7, 2009 03:19 AM
I too live in Asia 8 months of the year. Have a DRZ400sm in the UK and a DT 250 Djebel in Cambodia. Would like to upgrade the Djebel, and there are lots of DRZ400 S and SMs available now. But this new 450 would be on my shopping list if it were road legal (not that it is an issue in Cambodia!!!)
Jamie -Awesome  September 3, 2009 04:35 PM
Ok, I am a staunch KTM lover. I owned an EXC 450 and now have a XC-w 300. They are excellent bikes, not perfect, but close. That said; I think the addition of FI to the enduro world is a great thing. Kawasaki will probably be the next to incorperare FI on a woods bike. After reading some of the complaints above, I have to say, tsk tsk. You are all for the most part being cry babies. 1.6g tank, waaahhh. I called IMS and they already have 2 larger tanks in the workings, Clark, I'm sure is in the same mode. The weight is not great, but it's close to all the other bikes, the KTM is the lightest 450 out there to my knowledge. Except for the seat, the sound, and the color... They all 5 are close in performance. My oldest brother has a WR450, it's every bit as good as my KTM. I think the racing world especially should be happy about this incarnation, competition breeds perfection. And yes, I would drive a vehicle with a carb!!! Technology is advancing rapidly, all woods bikes will be FI in 5 years. It's not fine tuneable like a carb, but is more user friendly. It's a give and take. Now, am I going to sell my 300 and buy the Suzook? No. I'll just have to clear out another spot in the garage.
Scott- NZ -KTM vs jap crap  August 21, 2009 01:25 AM
Ktm looks cheaply finished!!! What drugs are you on!!! Take a closer look or are you blind!!! Ktm's are the best finished off road bikes on the Planet!!!
Theo Bruce -RMX450Z  August 13, 2009 10:42 AM
I'm glad to see the new RMZ450Z , The way Suzuki has come on the passed years it is only far that others should start to worry, this is going to become one of the premiere bikes just like the DRZ400s
George -FUEL INJECTION = GREY....1.6 GAL. TANK = MX  August 5, 2009 12:51 PM
Fuel injection to an off road or enduro bike its for me like seeing evrything in black and white... no mods,no setup, forget abaut rain or mood, woods or roots, roky or sandy , or any other geographical area where you use to ride, you will get basicaly with the fuel injection just one setup - grey .
Thanks God that KTM its still out there and still keep the off road world for us colorfull , I'm talking abaut an up to date carburator but also the 2 stroke bikes too.
Abaut 1.6 Gal. tank........ good for a indoor track
Steve -DRZ  August 5, 2009 01:05 AM
I own a 2008 DRZ400 and love it, lowed the bike by 50mm which i think helps me. I like the look of the RMX450Z (but whats up with 6L of gas) that has put me off the bike and 8.5 would be rigth.
bill -to rich w/ 08" z450  July 26, 2009 05:10 PM
no way your 2.6 gal tank will work on this bike.
FI plastic tanks require different designs.

also, wasn't suzuki using metal tanks for their FI sytems (higher fuel pressures than other mfg), that alone (if true) will kill the aftermarket support (IMS, Clarke, Acerbis & Aqualine all work with plastic) & thus will kill the potential for this bike. they better make there own larger tanks avail. if they want to sell to any western riders.
DR650SE -dual sport  July 25, 2009 06:47 PM
will this be available in the united states? does anybody know what honda , kawasaki, and yamaha are doing for dual sports in 2010 ? i have a 2009 DR650SE, great bike but for some reason its uncomfortable for me after 5 minutes, seating position, ergonomics, i dont know, but i want to sell it for something more dirt oriented.

JJ -Do you guys read your comments before posting them?  July 23, 2009 05:12 AM
Why not just talk about the bike in the article? People looking at the RMX aren't interested in KTM's spec levels or DRZ400's. They'll want to have comparisons drawn with the WR and CRX and KFX...
Doug -P.S.  July 15, 2009 05:37 AM
Fuel Injection is okay, but hardly a reason to buy one bike or another.Carburetors work just fine believe it or not. Concerning suspension, the word every review I've read on the 09 and later KTM's uses to describe the off-road suspension is this: Great. Saying you dislike the linless suspension when what you're riding a boat anchor WR250R with it's helpless wallowing in any serious off-road enviornment adds to the joke.
Doug -Cheaply finished ?  July 15, 2009 05:18 AM
This bike will likely be a good seller. All us off-roaders wind up doing a number of standard mods, for instance fuel tanks, etc. so that's no big deal. I've had all the brands including KTM's, and to tell the truth none of them were bad bikes. Currently I have a KTM, and though I don't believe they are the only bike to own, ever, I can tell you this: The comment stating KTM's "cheaply finished" could only be made by the clueless and ignorant. Please. NOBODY,nobody has ever said that unless they suffer from a visual impairment. I'll just say it, it's stupid. In build quality they are unmatched by all but Honda. Period. In internal precision of machined to tolerance components they are unmatched by anyone but Honda. The powder coated frames, the 500 dollar if bought aftermarket triple clamps,the TwinAir filter,the Acerbis plastic,the Brembo or Magura hydraulics and brakes,the braided stainless steel lines,come on.Add that up and you tell me what it costs, because these are things many of us do after the purchase of a Japanese bike. They are expensive but what they come with along with their re-sale makes them worth it. Parts, speaking of clueless, are widely available. Some parts are more expensive, some are not. By the way, there is ONE oil filter and a couple screens. Negatively comparing build quality to a WR250 with it's strangled engine in stock form, it's cheap black fasteners it's old in a day plastics and twenty pound exhaust? Absurd. A good laugh though.
jimbolaya -great article  July 7, 2009 09:12 PM
A huge detail you included that was missed by an online competitor is the e-start; good on you, very very bad & lazy on them.
bill -fuel range  July 3, 2009 11:30 PM
out west we need 4+ gallons for most rides. sub 2 gallons is an insult!
Uncleroby -RMX-DRZ  July 1, 2009 05:42 AM
The new RMZ is a really nice bike as they are the WR450F, the CRF450X and the KLX450R. But many people needs a off road bike durable and reliable enough to be used every day like the DRZ400E/S was. I have just bought the third DRZ400E dual sported but I am looking forward to buy a new model. I use the bike to commute to work, to have fun on windy mountain roads and off road. I am afraid the new rMX will not be suitable for such use...
Steve -doesnt look like a DS  June 29, 2009 03:46 PM
Doesn't look like much of a dual-sport bike to me, thats what they've got the DRZ400 for. Of course with a few aftermarket parts (mainly tank) it'd probably comparable to the new EXC's. Also refering to the KTM's, the quality is far and above and of the Jap manufacturers. Hydraulic clutch, brembo brakes w/wave rotors, magura tapered bars? All huge steps up from what you get from the japanese. Of course the japs are still great bikes though. I'll give you the kickstand comment though, terrible design.
JC -Don't sell, Rich  June 29, 2009 09:40 AM
I wouldn't off that '08 machine yet, Rich. Here are some more ideas for you in case you missed it... http://www.motorcycle-usa.com/241/3786/Motorcycle-Article/FMF-Factory-Suzuki-RM-Z450-Review.aspx
jimbolaya -unique  June 27, 2009 09:05 PM
This is the only Japanese off-road FI big bore. That is a good thing. I've seen the Austrian KTM up close several times attempting to fall in love w/ it. I haven't & don't expect I ever will. The KTM looks cheaply finished to me (certainly below my '08 Yamaha WR250R), I dislike the linkage-less shock, I dislike its needless quirkiness (the stand is a nightmare), I dislike the parts being less availabile vs. the Japanese, I dislike the price & dislike the 42 oil filters. I won't go back to a carbureted bike again (would you drive a carbureted auto?) This new Suzuki looks like a winner except for possibly the fuel range (we'll have to check that after it appears). I'm guessing the motor will be smooth enough for short-to-moderate length freeway drones for those consdering DS like myself.
Bill -Specs ?  June 27, 2009 11:03 AM
5 Speed? 1.6 Gallon Tank? 272 Pounds? Dollar for dollar you're way better off to buy a KTM.
Kadu -Brazil  June 26, 2009 09:59 PM
Moto mto fera...anda d+..nao tem melhor..
thewall -To heavy for legit enduro use  June 26, 2009 10:12 AM
The big 4 just can't figure this out. 272lbs and that is with a tiny 1.6g tank. The tank should be something close to 2.5g and the bike should weight in no more than 260lbs to be competitive. If you are just blasting fire roads and open terrain you can get by okay with that weight but get ready for heart failure when you get it in technical single track. Rich - no way would I sell the RMZ. Just do a couple mods to make it more woods friendly and use it (for XC type riding, dual-sport then maybe so).
Mark -Street Legal?  June 26, 2009 09:39 AM
Is there going to be a dual sport street legal update of the DRZ? Too bad it is only a 5 speed. The range of gear ratios is not very wide for a dual sport.
Rich -Small tank, but the DRZ may stick around for another year.  June 26, 2009 06:50 AM
The 1.6 gallon tank is not a good idea, but maybe it's intended to be more of a XC bike, not a dual sporter. Also, I believe that the DRZ-400 street version will still be available. My only problem is deciding if I should sell my '08 z450, pull the IMS 2.6 gallon tank and pick up a RMX.
x2468 -drz400  June 26, 2009 01:33 AM
the DRZ is very popular in the states Shin. I'm also curious to see what suzuki will do with the 400 now that they have this new 450 out.
Steve -fuel tank  June 25, 2009 07:25 PM
1.6 gallons, What were they thinking?
Eric -I wouldn't say KTM backed out of Dakar  June 25, 2009 04:54 PM
A more accurate statement would be the Dakar management chose to reward KTM for dominating that race for the better part of a decade by changing the rules (on extremely short notice) to put an end to their domination. I don't blame them a bit for pulling out. The big 4 had years to make something comparable to the 640/690 Enduro or 950/990 Adventure, but like they always do whether it be 600cc sport bikes, inline 4 liter bikes, or 450cc MX bikes, they chose just to clone each other and just apply different colors of paint. With the possible exception of Yamaha (its shame they don't sale the XT660 Tenere in the US) the big 4 could use a real injection of creativity. It would be nice to look outside of Europe for a unique ride.
Shin -A new DRZ coming?  June 25, 2009 03:17 PM
i dont know how popular the DRZ400SM is in the states but over here in asia (where KTM's cause a bomb AND a Leg! ^_^ ) the DRZ400SM has been the only viable choice for a road legal SM the husqys prillias being pretty hefty on the price tag too anychance this baby will be the new base line for a road legal SM ? like the RMZ450 this base machine wud make a brilliant SM but havin one come of the showroom floor road legal wud be such a blessin ( FUEL INJECTION!!) for the guys here who ride 365+++days a year