2019 Suzuki RM-Z250


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A.T.C. Corral
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The All-New 2019 Suzuki RM-Z250

Suzuki has further evolved the fundamental performance elements of ‘RUN', ‘TURN' and ‘STOP' to instill the 2019 RM-Z250 with the winning balance that will make it a highly successful racer in the years to come.

Achieving a yet higher level of balance between the race-proven performance of its engine and chassis, the 2019 RM-Z250 is ready to dominate the competition. Particular attention focused on advancing its ‘TURN' capabilities.

Key New Advancements
  • Increased Engine Performance
  • New cylinder head increases output and throttle response
  • New dual fuel injector system increases high rpm power
  • Evolved traction management system helps the bike hook up
  • Updated Suzuki Holeshot Assist Control (S-HAC) gets you out front // Greater Cornering Performance
  • New frame and swingarm balances lightness with strength
  • Engine placement and mounting aid chassis’ nimble handling
  • Coil spring KYB fork provides superb performance and easy tuning
  • New KYB rear shock and linkage deliver remarkable control
  • Race-ready, high-grip Dunlop MX33 tires
  • Improved Braking Performance
  • Larger front brake increases stopping power and feel
  • New, compact rear master cylinder is designed to prevent mud from collecting on it and from catching on the rider’s boots
  • Functional Styling
  • Aggressive new styling from the championship caliber RM-Z450
  • Narrow cockpit lets rider move with ease for maximum racing performance
  • Rider-friendly Tuning
  • Fuel couplers are included for quick and easy EFI tuning
Engine Design
  • Fitted with a new cylinder head and other improvements for 2019, the fuelinjected, 249cc, liquid-cooled, four-stroke, four-valve, DOHC engine remains proven and reliable.
  • The engine improvements result in greater power output with improved throttle response through the entire rev range.
  • The cylinder head features a new intake port shape and finish that fine-tunes the fuel/air charge into the combustion chamber to increase engine output.
  • A 30 percent larger air cleaner opening is combined with a more direct air cleaner outlet tube path into the throttle body for increased air flow.
  • The updated fuel injection system has extra-smooth power delivery, high fuel efficiency, superb reliability, and easy tuning capability.
  • For the first time on a Suzuki MX model, twin fuel injectors are used. The fuel/ air mix created by both injectors improves charging efficiency and increases high rpm power.
  • The primary fuel injector is at the bottom of the throttle body and sprays fuel at the butterfly valve to improve fuel and air atomization. The secondary injector is positioned in the air cleaner inlet duct so the fuel and air have more time to mix and cool before entering the engine.
  • To feed the new twin-injector system and mix the fuel and air charge to improve throttle response, the new, high-capacity fuel pump has 17 percent more output pressure.
  • The new throttle body eliminates complex control linkage, so the rider feels a more direct connection to the engine.
  • The intake camshaft profile is new, with more valve lift, increasing power at all engine speeds.
  • The cam chain tension adjuster and guide have been redesigned to reduce friction and mechanical loss.
  • The compact aluminum cylinder is finished with Suzuki Composite Electrochemical Material (SCEM) coating for durability, light weight, and efficient heat transfer.
  • To increase reliability, the machining process at the piston pin holes is changed to reduce stress at the piston crown.
  • Engine starting remains simple, due to a proven kickstarter and automatic decompression system that works precisely and efficiently (eliminating the need for a heavy and costly electric start system).
  • The new, high-flow exhaust system has a longer head-pipe, tapered midsection, and multi-layer silencer that has better flow through the entire rev range, with an emphasis on low-rpm performance.
  • The new exhaust silencer is a four-layer design that enhances performance and maintains compliance with AMA sound regulations.
  • New resin engine protectors help guard the coolant pump (on the right) and the stator cover (on the left) from debris and stones.
Chassis Design
  • The 2019 RM-Z250 features a new frame and swingarm design that continues Suzuki’s reputation for creating the best-handling motocross motorcycles.
  • The new aluminum alloy twin-spar frame combines cast and extruded sections to achieve superior front-and-rear weight distribution, while balancing strength and weight.
  • The new frame is 370 grams (0.8 pounds) lighter but has a 10 percent increase in torsional rigidity.
  • The position of the engine in the new frame is changed so the crankshaft sits higher in the chassis to further the bike’s nimble handling characteristics.
  • The design of the rear, upper engine mounts has been updated to a pair of mounts that are outboard of the cylinder head to increase rigidity and allow a direct intake path to the engine.
  • The engine mount material is changed to aluminum from steel to reduce weight.
  • The new swingarm is shaped using an innovative hydroforming process that maintains strength but reduces weight by 0.6 pounds (270 grams).
  • The new hydroforming process enabled engineers to create tapered swingarm beams that increased rigidity, while reducing heavier assembly welding.
  • New hexagonal aluminum rails are used on the sub-frame for lighter weight, a slimmer appearance, and easier air filter access.
  • The sub-frame rails are moved inward to slim the bodywork but are also raised to provide additional space for the larger air cleaner.
  • Not only is the new sub-frame narrow, but all of the body work is slim, so the rider can move freely in the cockpit, especially during spirited riding.
  • The new, KYB-supplied shock absorber has a thin-wire spring, spring guide, cushion rubber guide, and lower link that weigh less and have better movement reaction. The new spring and link weigh a pound (447.5 grams) less than the prior parts.
  • This KYB shock has new damping force circuits and a different rear lever ratio to improve the suspension’s traction characteristics.
  • The damping force adjusters have a wider tuning range, so the settings can better match the conditions and the rider’s style.
  • A new, high-performance KYB coil spring front fork replaces the PSF2 Pneumatic Spring Fork previously used on the 2018 RM-Z250.
  • Both fork legs have the same springs and damping force components, so front suspension tuning and maintenance is balanced and easy: a great benefit during frequent riding.
  • This new fork uses a free-piston design that separates air and oil to optimize the damping characteristics. Other internal changes help control the damping cartridge’s pressure and spring recoil, so the fork action remains supple and precise.
  • The new Renthal aluminum tapered handlebar has a straighter bend (less pull-back) than prior models to help aid the rider during aggressive maneuvering.
  • A new, lighter upper fork bracket is used to complement the new front suspension and handlebars.
  • To improve stopping performance and feel, a new, larger 270mm, wavestyle front brake rotor and a Nissin two-piston brake caliper are used.
  • The brake pad material is also changed to improve performance, plus the new front brake lever is a push rod type that more effectively transmits the squeezing force that the rider applies to the master cylinder
  • A new design rear brake master cylinder hugs the frame beam to reduce dirt contamination and the chance of the rider’s boot touching it during riding.
  • The wheels feature black anodized D.I.D DirtStar rims with a new cross-section design that maintains strength while reducing un-sprung weight.
  • To match the handling potential of the 2019 RM-Z250, the wheels are fitted with race-developed Dunlop Geomax MX33 tires. Additionally, the rear tire is nearly a half-pound (160 kg) lighter than the tire used on the prior RM-Z250.
  • Suzuki beak-inspired styling has sharp front fender and radiator shroud shapes that blend into the frame’s side covers and an upswept tail, to promote the impression of speed while reducing weight and easing service.
  • The functional styling and the motorcycle’s trim chassis permits a variety of rider positions that facilitate control and comfort.
  • In addition to the ergonomic improvements from the new bodywork, the rider’s foot pegs are moved 0.12 inches (3.3 mm) forward and 0.2 inches (5.2 mm) upward, while the handlebar grip position is moved 0.3 inches (7.4 mm) forward and 0.15 inches (3.8 mm) downward, to create a high level of rider-control during competition.
  • The new plastic fuel tank weighs a half-pound less than the prior model’s aluminum tank. Fuel capacity is 1.6 US gallons.
  • The seat base, inner fenders, and side covers were developed to reduce moisture and dirt from reaching the air cleaner. This helps prevent debris from contaminating the air filter.
  • The new, slimmer seat has revised foam density to aid the rider’s control of the motorcycle. The seat weighs a half-pound less than the prior model’s and has a large gripper panel that runs nose-to-tail on the cover.
  • The Suzuki Championship Yellow bodywork is enhanced with distinctive striping and modern logo graphics
  • Engine: 249cc, 4-stroke, liquid-cooled, DOHC
  • Bore Stroke: 77.0mm (3.0 in.) x 53.6mm (2.1 in.)
  • Compression Ratio: 13.75:1
  • Fuel System: Fuel injection
  • Starter: Primary kick
  • Lubrication: Semi-dry sump
  • Ignition: Electric Ignition (CDI)
  • Oil Capacity: 1.0L (0.24 US gal.)
  • Overall Length: TBA
  • Overall Width: TBA
  • Overall Height: TBA
  • Wheelbase: TBA
  • Ground Clearance: TBA
  • Seat Height: TBA
  • Curb Weight: TBA
  • Transmission: 5-speed constant mesh
  • Final Drive: Chain
  • Suspension Front: Inverted telescopic, air spring, oil damped
  • Suspension Rear: Link type, coil spring, oil damped
  • Brakes Front: Disc brake
  • Brakes Rear: Disc brake
  • Tires Front: 80/100-21 51M, tube type
  • Tires Rear: 110/90-19 57M, tube type
  • Fuel Tank Capacity: 6.5 L (1.7 US gal.)
  • Warranty: N/A



Engine Type
4-stroke, DOHC
Bore and Stroke
77.0mm (3.0 in.) x 53.6mm (2.1 in.)
Compression Ratio
Fuel System
Fuel injection
Electric Ignition (CDI)


Front Suspension
Inverted telescopic, air spring, oil damped
Front Brakes
Disc brake
Front Tire
80/100-21 51M, tube type
Rear Suspension
Link type, coil spring, oil damped
Rear Brakes
Disc brake
Rear Tire
110/90-19 57M, tube type


Fuel Capacity
6.5 L (1.7 US gal.)


5-speed constant mesh
Final Drive


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