Suzuki RM-Z250 (2019-2020): A Motocross Contender That Demands Attention

Introduction

The Suzuki RM-Z250 has long been a staple in the 250cc motocross arena, and the 2019-2020 iteration refines Suzuki’s legacy of blending aggression with precision. Designed for riders who crave track dominance without compromising on reliability, this generation introduces subtle yet impactful upgrades that elevate its competitive edge. Having spent time throwing dirt with this machine, it’s clear Suzuki aimed to balance raw power with rider-friendly control—a combination that makes it a compelling choice for both seasoned racers and ambitious intermediates.

Let’s dive into what makes this bike tick—and why it still turns heads in the pits.

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Engine Performance: Precision Meets Punch

At the heart of the RM-Z250 lies a 249cc liquid-cooled, four-stroke single-cylinder engine. The 2019 model year brought significant updates, including a dual fuel injector system and revised cylinder design. These tweaks aren’t just technical jargon—they translate to sharper throttle response and a broader powerband.

Key Highlights:
- 42 HP (31 kW): Delivered smoothly across the rev range, with a noticeable pull from mid to high RPMs.
- DOHC Valvetrain: Ensures precise valve timing for optimal combustion efficiency.
- SCEM-Coated Cylinder: Suzuki’s Composite Electrochemical Material reduces friction and improves heat dissipation, critical for prolonged motos.

The fuel injection system (a 44mm throttle body) eliminates the guesswork of carbureted rivals. On the track, this means instant throttle response out of corners and fewer hiccups during abrupt load changes. The engine’s character is aggressive but manageable—it rewards clutch control without punishing minor mistakes.

One standout feature is Suzuki’s traction management system. Unlike invasive electronic aids, it subtly modulates power delivery to prevent rear-wheel spin. On hard-packed tracks or loose berms, this system feels like having a safety net that doesn’t dull the adrenaline.

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Chassis and Handling: Lightweight Agility

Weighing in at 106 kg (233.7 lbs) with fluids, the RM-Z250 feels like a featherweight in motion. The aluminum twin-spar frame strikes a balance between stiffness and flex, providing confidence-inspiring stability at speed without sacrificing cornering flickability.

Suspension Setup:
- Front: 48mm KYB inverted fork with adjustable damping.
- Rear: KYB shock with a linkage system, adjustable preload, and compression/rebound damping.

The KYB components are a revelation. Over choppy whoops, the front end stays planted, while the rear absorbs big hits without kicking. For tighter tracks, dialing in softer damping transforms the bike into a corner-carving machine. The 955mm (37.6") seat height might intimidate shorter riders, but the narrow chassis design makes it easier to grip with your knees.

Wheels and Brakes:
- Dunlop MX33 Tires: Exceptional grip on intermediate terrain.
- Front Brake: 240mm disc with a Nissin caliper.
- Rear Brake: 220mm disc.

The brakes lack the initial bite of higher-end competitors but offer progressive feel—ideal for riders who prefer modulation over abrupt stops.

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Ergonomics: Built for Battle

Suzuki’s “no-frills” approach shines in the RM-Z250’s cockpit. The gripper seat with cross-shaped patterns locks you in during hard acceleration, while the Renthal Fatbar-style handlebar (not listed in specs but common in this class) offers a comfortable bend for most riders.

Standing up on the pegs feels natural, thanks to the 1,475mm (58.1") wheelbase and centralized mass. Even during long motos, fatigue stays minimal—a testament to Suzuki’s focus on rider comfort.

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Competition: How It Stacks Up

The 250cc motocross segment is fiercely competitive. Here’s how the RM-Z250 holds its ground:

1. Yamaha YZ250F

• Advantage: Yamaha’s engine is slightly more refined, with a broader power spread.
• RM-Z Counter: Suzuki’s chassis feels nimbler in tight sections.

2. KTM 250 SX-F

• Advantage: KTM’s WP suspension and hydraulic clutch are premium touches.
• RM-Z Counter: The RM-Z’s traction management system is less intrusive than KTM’s electronic aids.

3. Honda CRF250R

• Advantage: Honda’s reliability is legendary.
• RM-Z Counter: Suzuki’s dual injectors deliver stronger mid-range punch.

While the RM-Z250 isn’t the most powerful or tech-laden bike in its class, its balanced nature makes it a versatile choice for riders who value predictability and ease of setup.

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Maintenance: Keeping Your RM-Z250 in Fighting Shape

Owning a motocross weapon like the RM-Z250 means staying on top of maintenance. Here’s what to prioritize:

Oil and Fluids

• Engine Oil: Use SAE 10W-40 (metric: 10W-40) meeting API SG spec. Change every 10-15 hours.
• Coolant: Suzuki’s “WATER+” formulation resists boiling—check levels pre-ride.
• Brake Fluid: DOT 4. Flush annually or after heavy use.

Critical Components

• Spark Plug: NGK CR8EIB-10. Replace every 30-40 hours.
• Chain: DID 520DMA4. Adjust tension to 50-60mm (2-2.4") slack.
• Air Filter: Clean after every ride. Use foam filter oil for maximum dirt trapping.

Upgrade Opportunities

• Exhaust: The stock muffler meets sound regulations but robs some top-end. A slip-on system can unleash hidden horsepower.
• Suspension Tuning: KYB’s adjustability is great, but aftermarket springs tailored to your weight improve handling further.

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Final Verdict

The 2019-2020 Suzuki RM-Z250 isn’t about flashy gimmicks—it’s a purpose-built machine that thrives under demanding conditions. Its engine delivers tractable power, the chassis dances through ruts, and the suspension soaks up punishment like a sponge. While it faces stiff competition, few bikes in its class strike such a harmonious balance between aggression and accessibility.

Whether you’re chasing holeshots or honing your skills, this Suzuki rewards commitment. And when it’s time to rebuild or upgrade, MOTOPARTS.store has you covered with everything from NGK plugs to DID chains—because even champions need a pit crew.

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Specifications sheet

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