Key performance

60 ch
Power
🔧
449 cc
Displacement
⚖️
112 kg
Weight
💺
955 mm
Seat height
6.2 L
Fuel capacity
💰
8 899 €
New price
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Technical specifications

Changements 2013 2017
Power
60.0 ch (44.1 kW)
Frame
Overall Length périmétrique en aluminium
Front suspension
Inverted telescopic, coil spring, oil damped Inverted telescopic SFF-Air suspension
Rear suspension
Link type, coil spring, oil damped Showa link type, coil spring, oil damped
Rear wheel travel
310 mm (12.2 inches)
Front tyre
80/100-M, 80/100-21
Rear tyre
110/90-M,19 110/90-19
Weight
113.00 kg 112.00 kg
Dry weight
113.00 kg
New price
8 299 € 8 899 €

Engine

Displacement
449 cc
Power
60.0 ch (44.1 kW)
Engine type
Single cylinder, four-stroke
Cooling
Liquid
Compression ratio
12.5:1
Bore × stroke
96.0 x 62.1 mm (3.8 x 2.4 inches)
Valves/cylinder
4
Camshafts
2 ACT
Fuel system
Injection
Valve timing
Double Overhead Cams/Twin Cam (DOHC)
Lubrication
Semi-dry sump
Ignition
Electronic ignition
Starter
Kick

Chassis

Frame
périmétrique en aluminium
Gearbox
5-speed
Final drive
Chain   (final drive)
Front suspension
Inverted telescopic SFF-Air suspension
Rear suspension
Showa link type, coil spring, oil damped
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
Height
1270.00 mm
Fuel capacity
6.20 L
Weight
112.00 kg
New price
8 899 €

Overview

The Suzuki RM-Z450, 2017 model, remains a peculiar proposition in the highly competitive world of 450cc motocross. It arrives with an impressive historical legacy, including MX1 world championship victories and a plethora of national titles, but it also seems frozen in a certain era. Its price, around €8900 at the time, places it in the running, but one fundamental characteristic immediately distinguishes it from all the competition: it is the only 450cc motocross bike not equipped with a standard electric starter. In 2017, this was already a bold, almost provocative choice, destined only for riders accepting the kick starter ritual, even after a crash mid-race.

Suzuki RM-Z450

This machine, weighing 112 kg fully fueled, relies on specific technical assets. The S-HAC (Suzuki Holeshot Assist Control) system is its main argument, an electronic launch aid that modifies the ignition according to two modes to adapt to traction conditions. It's a practical innovation, but it cannot mask the absence of the electric starter, a standard piece of equipment at Honda, Kawasaki, or KTM. The other cornerstone is its Showa SFF-AIR fork, an air suspension that eliminates the mechanical spring and allows adjustments via pressure valves, with a stated weight saving of 1.1 kg. The perimeter aluminum frame was redesigned in 2015, optimizing rigidity and weight, and the 449cc single-cylinder engine, with its 60 horsepower, benefits from improvements to the cooling and gearbox for smoother shifting.

But who is really the rider of this RM-Z? It doesn't make things easy. Without an electric starter, it demands a certain technique and physical condition, distancing it from beginners or amateurs simply seeking ease. It clearly targets the experienced rider, the competitor who values mechanical purity and physical engagement, the one who can take advantage of the S-HAC for explosive starts and who knows how to adjust an air fork. Its 6.2-liter fuel tank and Showa suspension position it for intensive races, but it must compete with machines that are often more complete and modern. In 2017, it was an option for purists, nostalgics, or loyal Suzuki riders, but in a market where convenience is becoming paramount, its positioning was already out of sync. Today, if one were to look for the price of the 2025 Suzuki RM-Z450, it shows that the story continues, but the fundamental question of the electric starter remains, without a doubt, still posed.

Indicators & positioning

Weight-to-power ratio
0.53 ch/kg
🔧
Volumetric power
131.8 ch/L
In category Cross / motocross · 225-898cc displacement (383 motorcycles compared)
Power 59 ch Top 17%
17 ch median 47 ch 63 ch
Weight 112 kg Lighter than 33%
103 kg median 109 kg 132 kg
P/W ratio 0.53 ch/kg Top 18%
0.13 median 0.46 0.58 ch/kg

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