Suzuki's next to check in with their 2010 photos and specs. Ready? Go.

2010 Suzuki RM-Z250

Championship winning performance…..ready for you today.

Suzuki races to win, period. And, thanks to the hard work of Ryan Dungey in the U.S., the RM-Z250 is the AMA Supercross Lites West Coast Champion for 2009. But winning goes beyond the champagne. For the 2010 RM-Z250, Suzuki applied lessons learned on the track to turn up the speed, handling and confidence you’ll get racing every day, anywhere in the world.

Suzuki racing technology is everywhere you look: advanced Suzuki fuel injection is fitted for the first time on a four-stroke 250cm3 Suzuki motocross machine. Further engine modifications boost peak power without giving up any of the low-end or midrange that has made the RM-Z250 the choice of top riders everywhere. Chassis updates improve handling with key suspension upgrades making the new RM-Z250 the perfect weapon for motocross racers worldwide. And there’s the eye-catching slim, aggressive styling that causes the RM-Z250 to stand out at any track.

Think of the 2010 RM-Z250 as the perfect racing package.

Championship winning performance, now improved beyond the reach of the competition.

Fuel Injection
Derived from the pacesetting RM-Z450’s superlative system, the RM-Z250’s battery-less injection features a 43mm throttle body with progressive throttle linkage, a 16-bit computer and unique capacitor-assisted starting system. A durable, lightweight magneto-generator powers the fuel injection after starting. Because all engine systems are related in performance, a new muffler is fitted to optimize the benefits of fuel injection.

Power at the Top
Engine modifications for the RM-Z250 maintain its impressive low-to-midrange power but add a thrilling high-rpm rush to the mix—precisely what expert-level riders want in a potent 4-stroke racing engine. Revised cam timing works in conjunction with updated intake ports to boost power and torque at the top of the power band. A new, stronger connecting rod and mirror finishing permits maximum engine speed increased to a stunning 13,500 rpm. Crankshaft modifications similar in spec to the championship-winning RM-Z450 increase rigidity and strength. The 249cm3 engine continues to use a DOHC, 4-valve head design with lightweight titanium valves riding in an advanced pent-roof cylinder head and semi-dry-sump lubrication system reduces internal friction. With a top-end rush like no other, the RM-Z250’s engine has to be experienced to be believed.

Chassis Updates
In the search for handling perfection, the RM-Z250’s twin-spar aluminum alloy frame has been redesigned with several key components to optimize rigidity balance and improve traction at high speed. The lower frame tube has thicker walls, 3.0mm versus 2.5mm, while the side rails are slightly shallower. Connecting the 19-inch rear wheel and the lightweight chassis is a new swingarm with an improved center brace for increased rigidity that also more concentrates its mass for enhanced suspension action and greater traction. To prove that Suzuki understands the importance of details, new footrest brackets are designed to prevent mud clogging.

High-Performance Suspension, Updated
Thoroughly revised spring and damping rates inside the inverted Showa 47mm fork and piggyback single shock result in improved handling for a wide range of riders. Carefully chosen modifications improve traction and rider confidence at high speed without sacrificing the RM-Z’s legendary quick-turning ability. Modifications to the rear suspension linkage that reduce thrust backlash also improve traction and make for more consistent performance.

Radiator Louvers
Improved radiator louvers direct more cooling air to the twin side-mounted aluminum alloy radiators for lower engine temperatures. They are joined to the outer bodywork for increased strength without adding weight.

Color Coded
For 2010, the RM-Z250’s number plates have a black background to conform to rules for competition numbers. It’s one less thing to worry about so racers can concentrate on winning.

2010 RM-Z250 Technical Specifications

Overall Length
2,170 mm (85.4 in.)
Overall Width
830 mm (32.7 in.)
Overall Height
1,270 mm (50.0 in.)
Wheelbase
1,475 mm (58.1 in.)
Ground Clearance
345 mm (13.6 in.)
Seat Height
955 mm (37.6 in.)
Curb Weight
104.5 kg (230.4 lbs.)
Engine Type
4-stroke, liquid cooled, DOHC
Bore
77.0 mm
Stroke
53.6 mm
Displacement
249 cm³
Compression Ratio
13.4:1
Fuel System
Fuel Injection
Lubrication System
Suzuki Advanced Sump System
Clutch
Wet multi-plate type
Transmission
5-speed constant mesh
Primary Reduction Ratio
3.210 (61/19)
Gear Ratios
 
1st
2.153 (28/13)
2nd
1.764 (30/17)
3rd
1.470 (25/17)
4th
1.238 (26/21)
5th
1.090 (24/22)
Final Reduction Ratio
4.000 (48/12)
Front Suspension
SHOWA 47mm telescopic forks, pneumatic/coil spring, oil damped
Rear Suspension
Swingarm, link type, SHOWA piggyback-reservoir shock
Caster
30°20’
Trail
140mm (5.5 in.)
Front Brake
Disc
Rear Brake
Disc
Front Tire Size
80/100-21
Rear Tire Size
100/90-19
Fuel Tank Capacity
6.5 L (1.7 US gal.)
Body Color
Sold Black/Champion Yellow No. 2 (GY8)

*Product Specifications Subject to Change

2010 Suzuki RM-Z450

A racing legend, improved

Two years ago, Suzuki stunned the world with the first fuel-injected motocross racebike. It was more than unique…it was a winner. Around the globe, the RM-Z450 helped racers collect wins and trophies, fiercely competing in venues from the World MX1 series to America’s AMA Supercross championship.

Now the question: Is there any way to improve on this incredible success? Sure there is. But you have to be Suzuki to do it.

Take a close look at the 2010 RM-Z450, a thoroughly updated, cutting-edge open-class motocrosser that’s more potent than ever. Across-the-board engine upgrades boost power from awesome to awe-inspiring. Detailed frame and suspension modifications improve an already sharp-turning racebike. As a racer, you want quick, laser-accurate steering and confidence-inspiring high-speed handling in one package. And you want a high performance machine whose racing pedigree enables it to be competitive right out of the crate? Here is Suzuki's answer!

When Suzuki introduced the first fuel-injected motocrosser in history, it jumped way ahead of the pack.

With the new 2010 RM-Z450, your competitive advantage just got that much bigger.

Powered Up!
Suzuki’s engineers have carefully developed the RM-Z450’s powerful 449cm3, DOHC, 4-valve engine to increase power throughout the rev range. Always known for its incredible midrange grunt, the 2010 RM-Z450 also has arm-stretching high-rpm power. A combination of revised cam profiles and reworked cylinder-head porting give the RM-Z450 amazing idle-to-redline thrust. An improved camchain tensioner provides more consistent performance. Also a modified throttle linkage makes the low-speed response more progressive. How’s that? More power and better manners.

Fuel Injection, Pioneered and Improved
For 2010, the RM-Z450’s electronic fuel injection is improved with a reversed throttle valve movement. Such a simple alteration pays handsomely: The fine fuel-air mist from the 12-hole fuel injector is directed away from the throttle valve for a more uniform mixture producing increased power and enhanced throttle response.

Chassis Dynamic
Everywhere you look, the RM-Z450’s twin-spar aluminum alloy frame has received detail improvements to optimize rigidity balance. It starts with the head stock, which is now a two-piece design that’s 9mm taller than before. Further back, the sections at the rear of the frame, which are made up of extruded and cast members, are now wider for increased rigidity. More strength comes from a wider upper frame bridge beneath the saddle, while material wall thickness was strategically designed to save weight.

High-Quality Showa Suspension
The RM-Z450 employs race-bred, state-of-the-art Showa suspension front and rear. For 2010, both ends of the bike are given suitably revised spring and damping rates—the new rates work together with the chassis’ optimized rigidity balance to improve handling. 47mm inverted forks provide optimum wheel travel and can be adjusted for compression as well as rebound damping for maximum rider adjustability. A Showa piggyback reservoir rear shock offers both high- and low-speed compression damping adjustment along with rebound damping and spring preload adjustments. Working through Suzuki’s superlative rising-rate linkage system—now with revised link-bearing tolerances for precise handling performance—the shock provides 310mm of wheel travel delivering maximum traction.

2010 RM-Z450 Technical Specifications

Overall Length
2,190 mm (86.2 in.)
Overall Width
830 mm (32.7 in.)
Overall Height
1,270 mm (50.0 in.)
Wheelbase
1,495 mm (58.9 in.)
Ground Clearance
325 mm (12.8 in.)
Seat Height
955 mm (37.6 in.)
Curb Weight
112.5 kg (248.0 lbs.)
Engine Type
4-stroke, liquid cooled, DOHC
Bore
96.0 mm
Stroke
62.1 mm
Displacement
449 cm³
Compression Ratio
12.2:1
Fuel System
Fuel Injection
Lubrication System
Suzuki Advanced Sump System
Clutch
Wet multi-plate type
Transmission
5-speed constant mesh
Primary Reduction Ratio
2.625 (63/24)
Gear Ratios
 
1st
1.800 (27/15)
2nd
1.471 (25/17
3rd
1.235 (21/17)
4th
1.050 (21/20)
5th
0.909 (20/22)
Final Reduction Ratio
3.846 (50/13)
Front Suspension
SHOWA 47mm telescopic forks, pneumatic/coil spring, oil damped
Rear Suspension
Swingarm, link type, SHOWA piggyback-reservoir shock
Caster
29°40’
Trail
130mm (5.1 in.)
Front Brake
Disc
Rear Brake
Disc
Front Tire Size
80/100-21
Rear Tire Size
110/90-19
Fuel Tank Capacity
6.2 L (1.6 US gal.)
Body Color
Solid Black/Champion Yellow No. 2 (GY8)

Caster
Trail
Front Brake
Rear Brake
Front Tire Size
Rear Tire Size
Fuel Tank Capacity
Body Color
*Product Specifications Subject to Change

2010 Suzuki RMX450Z

Heart of a champion, a taste for adventure.

Racing improves the breed; Suzuki has proven that time and time again. Now it’s time to rewrite the rules for the serious off-road rider. Introducing the 2010 Suzuki RMX450Z.

Descended from the Championship winning RM-Z450, the first motocross bike to offer high-performance Suzuki fuel injection, the RMX450Z is a serious off-road bike for serious trail riders. Its powerful and torquey 449cm3, liquid-cooled, four-stroke engine shares all core technology with Suzuki’s winning open-class motocrosser. Its frame, suspension and bodywork are all nearly identical to the RM-Z450’s—maintaining that model’s slim, aggressive styling. Only changes to make the RMX450Z a superior trail machine have been made—maximum performance – no compromises.

That’s like taking your hard-core motocross machine out onto the trail.

Only better. Much better.

Fuel Injection
Suzuki pioneered fuel injection for motocrossers, and the RMX450Z shares all key technologies with the stunning RM-Z450. Fuel injection improves fuel efficiency, throttle response and reduces emissions, allowing the RMX450Z to be “green sticker” eligible in the state of California. On every trail in the world, the RMX450Z’s fuel injection provides unmatched smoothness of power delivery and trail-ready reliability thanks to a KEIHIN throttle body with progressive linkage. This advanced fuel injection system also eliminates the need for re-jetting at higher elevations. To best suit the RMX450Z to life on the trail, the airbox features a hinged lid for quick air-filter maintenance and better protection from dust. Suzuki’s vast experience with motorcycle fuel injection both on and off-road help make this among the best systems available.

Electric Start
The trail is no place to wear yourself out kick-starting a bike, so the RMX450Z comes with an electric starter, energized by a compact battery centrally located to reduce its influence on weight distribution and balance of the bike. To charge the battery and power the RMX450Z’s lights, a larger magneto-generator is fitted. It’s a win-win situation.

Engine & Transmission
Suzuki has made minimal modifications to the all-conquering RM-Z450’s potent four-valve, DOHC engine for the RMX450Z. This lightweight engine now features a modified inlet tract along with revised cam profiles to increase low and mid-rpm power. Wider gear ratios in the 5-speed constant-mesh transmission that work with revised primary and final-drive ratios are ideally suited for a broad range of conditions, from scaling steep trails to high-speed open-terrain riding.

The addition of a coolant reservoir tank increases on-trail reliability, while a relocated filler cap improves access. Because the trail can be a rocky place, a new engine protector plate is fitted. No stone was left unturned.

State of the Art Chassis
Suzuki’s light and effective aluminum alloy twin-spar frame construction is used in the RMX450Z, employing both cast and extruded sections for the utmost benefits of both: low weight, high rigidity, and high durability. The RMX450Z’s aluminum alloy swingarm is derived from the RM-Z450’s to maintain ideal balance, while the rear suspension linkage benefits from reduced free play. Its geometry combines the RM series’ renowned turning-on-rails abilities with optimized handling performance that all serious trail riders want.

World Class Suspension
Derived from the RM-Z450, the RMX450Z’s trail ready suspension features the same phenomenal action as the race bike. The RMX450Z suspension utilizes high performance rebound and compression damping adjustable Showa forks combined with a Showa piggyback reservoir style rear shock featuring two-way adjustable compression damping with adjustable rebound damping and preload adjustments. Spring rates have been optimized for off-road riding. Every aspect of the RMX450Z’s performance envelope has been carefully considered for serious off-road riding without compromising a millimeter of quality.

Superior Ergonomics
Sit on an RM-Z450. Now go sit on the new RMX450Z. Feels just about the same, right? That’s right. With an ideal riding position resulting from the motocross-developed seat, slim bodywork and low-profile aluminum alloy fuel tank, the RMX450Z allows the rider to concentrate on the terrain. A comfortable rider is a fast rider.

Instruments You Need
A durable, ultra-compact enclosure houses a full-function instrument cluster on the RMX450Z—and can be configured for two modes, standard and sport. The sport mode simplifies the display so the rider can concentrate on terrain; it shows the timer, tripmeter, average speed and tire-diameter correction. In the standard mode, the display also shows speed, time, two trip lengths, and voltage. An integrated tire diameter calculator allows precise fine tuning for different tires to ensure accuracy of the speed and distance displays. The RMX450Z also features a low fuel level warning light for confident off-road riding anywhere you go.

2010 RMX450Z Technical Specifications

Overall Length
2,185 mm (86.0 in.)
Overall Width
830 mm (32.7 in.)
Overall Height
1,260 mm (50.0 in.)
Wheelbase
1,480 mm (58.3 in.)
Ground Clearance
320 mm (12.6 in.)
Seat Height
955 mm (37.6 in.)
Curb Weight
123.5 kg (272.3 lbs.)
Engine Type
4-stroke, liquid cooled, DOHC
Bore
96.0 mm
Stroke
62.1 mm
Displacement
449 cm³
Compression Ratio
11.6:1
Fuel System
Fuel Injection
Lubrication System
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
130mm (5.1 in.)
Front Brake
Disc
Rear Brake
Disc
Front Tire Size
80/100-21
Rear Tire Size
110/100-18
Fuel Tank Capacity
6.2 L (1.6 US gal.)
Body Color
Solid Black/Champion Yellow No. 2 (GY8)

*Product Specifications Subject to Change



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15 comments
  • motogeezer

    3/9/2010 3:55 PM

    A friend of mine told me to check out the RMZ450X.

    He and I and our kids have been riding together for years (track, trail, and desert), and we old dudes have often talked about getting purpose-built trail bikes with e-start.

    Now that I've seen it, I think I'll keep kicking my old RM250 that weighs sixty pounds less.

  • yspm

    11/4/2009 2:20 AM

    Now let's see an RMX250 two stroke with lights and electric start! (I'm happy to see the RMs still in the 2010 stable!)

  • yspm

    11/4/2009 2:18 AM

    At 272 that's a bit beefy for whips. Good to see Suzuki finally aboard this train though.

  • jasonmccoll

    8/3/2009 6:01 PM

    I think Suzuki should offer a RM250FX Using their already awesome RM250 two stroke for the platform they could make a Bike dedicated to the FMX er and corner that market!!!!!!!!!!

  • fun rider

    7/24/2009 1:19 AM

    They look funny i think its the black number plates. But would proform very well,
    and shoulded have may hic-cups in the EFI

  • mx43^^

    6/26/2009 11:29 AM

    is there no 85 cc !?

  • mx43^^

    6/26/2009 11:27 AM

    no 150cc ? and again the 100 years old 85 cc.

  • Winfield

    6/26/2009 6:07 AM

    NO RMX 250 Z ?

  • Bronson905

    6/25/2009 9:13 PM

    The 250 looks SICK!

  • v1rus99

    6/25/2009 8:17 PM

    Very nice.... Love the black plates on the 250. I wonder how many other 250's will be EFI. We know KX is not.

  • Kinetic1

    6/25/2009 4:08 PM

    It is the RMX because That nomenclature is a Suzuki off road trademark.

  • GuyB

    6/25/2009 3:47 PM

    Was there supposed to be a 150? I'd never heard that one.

    The RM85 will remain available for 2010.

    For all the models, "Pricing and dealer availability has yet to be determined."

  • Winfield

    6/25/2009 1:45 PM

    NO 150cc ?

  • tiddlermx23

    6/25/2009 1:23 PM

    why not have the rmx450z be the rmz450x?

  • Jake909

    6/25/2009 12:54 PM

    no 85??

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