2010 Suzuki RMX450Z gets serious about enduro

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With KTM quitting Dakar, all the buzz centers around 450cc Japanese bikes stepping up to the top level of competition. Since Suzuki was likely just as surprised about the new 450cc limit as KTM was, we’re guessing the newfound readiness for competition in Argentina is more happy coincidence than deliberate design. Still, the 2010 Suzuki RMX450Z, essentially a retuned version of the RM-Z 450 MX bike, is a seriously competitive enduro.
Replacing the somewhat lackluster Suzuki DR-Z400E, the new RMX is
equipped with the liquid-cooled, DOHC 449cc four-stroke from the RM-Z,
here with a longer inlet tract and revised cam profiles for stronger
low- and mid-range power at the expense of top-end shove. Over its MX
counterpart, the RMX also gets wider ratios for its 5-speed gearbox and
a new engine protector plate to ward off all those stumps, boulders and
forest animals enduro riders are likely to encounter. The rest, the
frame, suspension, Keihin fuel injection and bodywork are virtually
identical to the RM-Z.

That suspension is a fully adjustable 47mm USD fork and a Showa piggyback shock supporting an 18-inch rear wheel.

Unfortunately, the RMX shares the RM-Z’s tiny 1.6-gallon tank, meaning
there’s going to be huge demand for more capacity in the aftermarket.

Suzuki now quotes a liquids-included curb weight for the RMX — 272.3lbs
(123.5kgs) — so it’s hard to make comparisons to the 262lbs (dry)
DR-Z400E, but we’re guessing it sheds a few pounds. Compared to the
brand-new and battery-less 250.4lbs (curb) 2010 Kawasaki KX450F MX
bike, the RMX stacks up pretty well, only adding 25.3lbs to the RM-Z.


  • http://www.motorsportretro.com rich

    Good to see Suzuki finally entering the 450cc enduro market.

    I wonder if we will see a road legal factory supermoto kit for the new bike?

    • http://hellforleathermagazine.com Wes Siler

      I hope so, the DR-Z400 SM needs to drop some weight and gain some power.

  • Bronson

    I like it, but a 1.6 gallon tank for an enduro bike… what’s up with that?

    +1 on the supermoto version. More offerings from the Japanese would be welcomed (the 230 & 250 offerings don’t count).

  • aeolus

    But will the factory provide a bike with all the accouterments needed for a serious entrant? Word on sites following developments claim it was dealers in Europe who pushed the smaller capacity tho to give them a chance at winning, not the factories. The KTM Rally was ready to go but @ $40,000 it was said. I tried to find the finishing list for the ’09 race to see what percentage the 450 bikes made it to the end but couldn’t. To see if KTM’s claim that 450 is not big enough is valid.

  • Matt

    Do those lights mean it will be 50 state street legal?

  • luckyguy19

    No, its not technically street legal, but my be plate-able in some states.

  • http://www.moonlakevintage.com james

    I’m also waiting for a SUMO bike from the Japanese. The Yamaha supermoto 250 is pretty cool so I was hoping for a four50 from them. But a Suzuki 4fifty would be just as nice. Honda doesn’t seem interested yet. How about a Suzuki SUMO 450 but instead of the dirt racing colors of yellow how about it dressed out in the road racer dark blue, light blue and white. I photo-CHOPPED one up. I at least want some credit for using the Suzuki S in the name Sumo. SUper MOto. SUMO.http://www.flickr.com/photos/25178933@N04/3677737191/