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Engine Features
Compact 450cc, 4-stroke, liquid-cooled, DOHC, 4-valve engine - lightweight design with emphasis on broad power delivery
Narrow cylinder head design featuring shim-under-bucket valve train with titanium valves for reduced reciprocating mass and
more stable high-rpm performance
Lightweight hollow-type camshafts with carburized surface treatment for durability and high lubrication qualities - hollow
design further contributes to precise valve operation at all engine rpm
Durable forged-aluminum piston with tin plating and oil retaining grooves to reduce friction and wear
Electro-plated aluminum cylinder bore for increased durability and heat transfer
Keihin FCR40 carburetor with hot start system and a throttle-position sensor linked to digital CDI ignition
Lightweight exhaust system with titanium head pipe with large-capacity stainless-steel secondary pipe and aluminum muffler
Automatic decompression system similar to RM-Z250 - simple lightweight system designed for easy kick starting and durable
operation
Suzuki Advanced Sump System - semi-dry-sump lubrication system featuring separate crankshaft and transmission oil chambers -
permits low crankshaft placement for reduced engine height and low center-of-gravity
Suzuki Active Vent System - one-way reed valve system between crankshaft and transmission to reduce crank chamber pressure and
enhance piston ring seal performance and overall engine power
Four-speed transmission for weight reduction and compact engine size - allows clutch to be placed closer to engine centerline
to concentrate engine mass and reduces crankcase area required for transmission
Counterbalancer shaft gear-driven off the magneto rotor to reduce engine vibration without adding to engine size or weight
Chassis Features
Attractive aluminum twin-spar frame designed for optimum strength, rigidity and weight
Aluminum swingarm with tapered beam design similar to RM250 - features cast-aluminum cross beam to improve straight-line
performance
RM250-type rear suspension linkage - suspension load placed on the swingarm instead of the frame to reduce weight, and allows
smoother movement of the rear shock and linkage for improved rear wheel traction
New lightweight chain guide design similar to RM125/250 - cutaway design reduces weight
Showa-brand cartridge-style front fork with 47mm inner tube, plus 22-way compression damping, 20-way rebound damping and 12.2
inches. of wheel travel - internal structure similar to RM250
Showa-brand rear shock absorber with large 50mm piston and 18mm inner rod for increased oil flow and stable damping performance
Large 250mm front disc brake designed for reduced weight and high durability - includes Kevlar brake hose for low expansion
rate and improved brake lever feel - rotor is mounted at four points instead of six with new-type shouldered bolts for a secure fit and minimal weight
Compact 240mm rear disc brake with lightweight caliper body similar to RM-Z250 - rotor is mounted at four points instead of six
with new-type shouldered bolts for a secure fit and minimal weight
New-style wheels, spokes and spoke nipples designed for the best balance of weight, rigidity and overall wheel strength
New-style front and rear wheel hubs designed for reduced weight and added strength - provides more rigid assembly when combined
with larger axle, new spoke design and wide wheel bearing pitch
Specially-designed Bridgestone tires with large contact patch for improved traction and acceleration - 90/100-21 front,
120/90-19 rear - wider than competing models without weight increase
Renthal tapered aluminum handlebars with Renthal-labeled handlebar pad - lighter than standard bars - rubber-mounted to reduce
vibration
Titanium footpegs designed for high grip and minimal weight
Slim fuel tank shape designed to blend with the seat and radiator shrouds for easy rider movement and weight transition
New-design rear fender and frame covers with fresh air vents for increased air flow to the carburetor airbox
Shouldered aluminum spacers for quick and secure mounting of body work
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