The 2024 Suzuki RM-Z450 is a rider-friendly motocrosser, and it serves as the basis for Ken Roczen’s supercross and motocross racebikes. It returns unchanged for 2024.
Power comes from a 449cc DOHC single with fuel injection fed by a 44mm throttle body and dual injectors. The engine has a strong bottom end and a fairly mellow top end, pulling up long hills without hitting the rev limiter right away. It is kickstart only and drives through a 5-speed transmission.
Riders can tune the fuel injection and ignition timing through the included Suzuki MX-Tuner 2.0 coupler system and a smartphone. The aggressive preset map adds bottom-end punch while keeping the power controllable. Traction control and a holeshot assist are standard.
The chassis pairs an aluminum twin-beam frame with a fully adjustable inverted fork offering 12.2 inches of travel and a fully adjustable Showa BFRC shock with 11.8 inches. The suspension is soft in the midstroke, allowing smooth corner entries and aggressive exits, and it carries high speed over bumps without head shake.
The RM-Z450 is exceptionally stable and turns in exactly where the rider points it. It feels slightly wider at the shrouds than some rivals, and its weight helps it stay planted under aggressive throttle.
Bridgestone Battlecross X30 tires, D.I.D DirtStar wheels, and a Renthal handlebar are standard. The seat height is 37.8 inches, and the wet weight is 247 pounds.
Suzuki skips features such as electric start to keep the price down, and the 2024 RM-Z450 lists for $9199 in Champion Yellow No. 2. With minor suspension and chassis tweaks, it is a competitive machine for riders who want the fun of riding and racing motocross.
Read our 2023 Suzuki RM-Z450 and RM-Z250 review.
2024 Suzuki RM-Z450 Specifications
ENGINE
- Type: 4-stroke single
- Displacement: 449cc
- Bore x stroke: 96.0 × 62.1mm
- Compression ratio: 12.5:1
- Valvetrain: DOHC; 4 valves
- Lubrication: Semi-dry sump
- Fueling: EFI w/ 44mm throttle body and dual injectors
- Starting: Kick
- Transmission: 5-speed
- Clutch: Wet multiplate
- Final drive: D.I.D 520 chain
CHASSIS
- Frame: Aluminum twin-beam
- Handlebar: Renthal
- Front suspension; travel: Fully adjustable inverted fork; 12.2 inches
- Rear suspension; travel: Linkage-assisted fully adjustable Showa BFRC shock; 11.8 inches
- Wheels: D.I.D DirtStar
- Tires: Bridgestone Battlecross X30
- Front tire: 80/100 x 21
- Rear tire: 110/90 x 19
- Front brake: 270mm disc
- Rear brake: 240mm disc
DIMENSIONS and CAPACITIES
- Wheelbase: 58.3 inches
- Rake: 28.5 degrees
- Trail: 4.9 inches
- Seat height: 37.8 inches
- Ground clearance: 13.0 inches
- Fuel capacity: 1.7 gallons
- Wet weight 247 pounds
- Colors: Champion Yellow No. 2


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