Key performance
Technical specifications
Engine
- Displacement
- 449 cc
- Engine type
- Single cylinder, four-stroke
- Cooling
- Liquid
- Compression ratio
- 12.2 : 1
- Bore × stroke
- 96 x 62.1 mm
- Valves/cylinder
- 4
- Camshafts
- 2 ACT
- Fuel system
- Injection
- Valve timing
- Double Overhead Cams/Twin Cam (DOHC)
- Ignition
- Electronic ignition
- Starter
- Kick
Chassis
- Frame
- Twin-spar aluminum frame and swingarm.
- Gearbox
- 5-speed
- Final drive
- Chain (final drive)
- Front suspension
- Telescopic inverted, coil spring, oil damped
- Rear suspension
- Swingarm, link type, coil spring, oil damped
- Front wheel travel
- 310 mm (12.2 inches)
- Rear wheel travel
- 310 mm (12.2 inches)
Brakes
- Front brakes
- Single disc
- Rear brakes
- Single disc
- Front tyre
- 80/100-21
- Rear tyre
- 110/90-19
Dimensions
- Seat height
- 955.00 mm
- Wheelbase
- 1495.00 mm
- Ground clearance
- 325.00 mm
- Length
- 2190.00 mm
- Width
- 830.00 mm
- Fuel capacity
- 6.20 L
- Weight
- 113.00 kg
- New price
- 8 099 €
Overview
Who would have bet on a motocross bike without electric start in 2025? And yet, that is precisely the gamble, stubbornly undertaken, that Suzuki continues to make with its RM-Z450. While all of its Japanese and Austrian competitors have adopted the magic button long ago, Suzuki persists with its old-fashioned kick. A raw, almost archaic philosophy that stands out in the aseptic world of modern motocross and which, let's be honest, immediately divides the public. On one side, purists will see it as a weight saving and reassuring mechanical simplicity. On the other, Sunday riders or those who chain together sessions more readily embrace modern comfort.

Because it must be said, the absence of electric start as standard on the Suzuki RM-Z450 is the elephant in the room. For a price approaching 8100 euros, being obliged to give it a good kick can be surprising. It is an assumed choice, which refers to an era when the rider had to earn his mechanics. The 449 cm³ single-cylinder engine, with its 12.2:1 compression ratio, is not the fiercest on the grid, but it cultivates another virtue: remarkable progressiveness and elasticity. The power does not arrive in a nervous surge, it unfolds with a linearity that inspires confidence, especially on slippery or technical terrain. It is an engine that speaks to the rider, that is managed with the wrist and not with electronic traction control, which is also absent. Once launched, the RM-Z450 reveals its true talent.
This talent lies in its chassis. This aluminum double cradle frame, which weighs the bike at only 113 kg fully fueled, is a pure marvel of agility. The machine leans, straightens, slaloms between the ruts with disconcerting ease. The narrow riding position allows you to move with the bike, to become an extension of it. Combined with the reworked Showa suspension, the whole offers a feeling of precision and softness in impacts that remains a reference. It is here, in the dialogue between the rider and the terrain, that the Suzuki takes its revenge, offering a level of maneuverability that can make you forget its old-fashioned starting system.
So, who is this beast for? Clearly not for the beginner looking to get started without hassle. The kick requires technique, and the engine, although progressive, is a real 450. It targets the experienced rider, the enthusiast of pure sensations who prioritizes feeling and lightness over modern comfort. The one who understands that the price of the Suzuki RM-Z450 does not buy gadgets, but a refined racing philosophy, directly inspired by the factory machines of Dungey or Desalle. In a world where complexity reigns, it assumes its status as the ultimate analog, with the charming flaws and transcendent qualities that implies.
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