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2010 Suzuki RM-Z450 No big news like the 250’s switch to EFI in the RM-Z450’s camp, but it doesn’t mean that Suzuki hasn’t been busy dialing in and improving on its big MX bike. Have ridden previous models and have all been very good....Hoping for something even better from the 2010 model. looks good and specs speak for themselves but performance on the ground will be the real test....based on the past.....it should be a bloody good ride. The new Suzuki enduro uses the same 449cc liquid-cooled engine as the RM-Z450.Modifications to the 2010 RM-Z450 engine include revised cam profiles, cylinder-head porting, and an improved camchain tensioner. Suzuki has also tinkered with the RM-Z450’s electronic fuel injection, reversing the throttle valve movement. Changes to the chassis starts with a two-piece head stock that’s 9mm-taller than last year and the Showa 47mm fork has new spring rates. On the tail end, the extruded and cast members on the rear section of the frame are wider, and the motorcycle’s wheelbase is 0.6-inches longer. The Showa suspension on the rear also features revised spring and damping rates. A tidy little digital instrument panel displays speed, time, trip lengths, and voltage while in standard mode. The airbox on Suzuki's new enduro has a hinged lid which should help keep dust out better and provides for easy maintenance. .
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, The RMZ450Z's swingarm is derived from the RM-Z450 and the rear suspension linkage benefits from reduced free playEverywhere 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. Suzuki continues to offer its two-strokes, the RM125 and RM250, but only in the European market. Suzuki has not yet revealed the 2010 MSRPs. Once again Suzuki leads the way with fuel injection. For all those haters that said FI would never work on bikes and that it would never be the standard...finish eating those words. I welcome FI!Motorcycleusa.com
