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Suzuki RM-Z450

Suzuki GB has announced a special Holeshot Accessory package for the 2014 RM-Z450 available for a short period only.

Featuring a host of specially developed accessories, including a spare set of wheels made up from special Talon Hubs and Gold anodised Excel Rims*, a full Yoshimura RS-R exhaust system, red anodised Yoshimura Hard Parts, including Axle Adjusters, Oil Filler Plug, Engine Case Plugs, Steering Stem Nut and Brake Clevis, as well as a branded graphics kit too.

This special pack has over £1,500 worth of additional components but will be supplied and fitted by Suzuki dealers for just £1,200.

RM-Z450 Overview

Look deep and you’ll see the championship-inspired technology we utilise in the RM-Z450. From years of experience helping racers around the world reach the top of the podium, Suzuki understands that the power of high-performance engineering is often in the details. Beauty is skin deep. But power and performance goes all the way to the core.

The 2014 RM-Z450 has been updated with a stylish two-tone radiator shrouds with new aggressive graphics and a yellow number plate accentuating the RM-Z450's agile looks.

Engine Design Concept
For race-winning performance, a motocrosser’s engine needs to be durable, efficient and powerful. To win championships, that engine needs the powerful engineering heritage that comes from Suzuki. The RM-Z450 features a fuel-injected engine powered by Suzuki's advanced technology. Suzuki’s fuel-injection expertise has delivered national and world championships in Superbike racing as well as in Motocross and Supercross. High-performance heritage like this serves as the platform for the technology Suzuki built into the RM-Z450 resulting increased acceleration, faster throttle response, and broader mid-range power and torque. That means motorcycles that are more competitive and more practical performers to win those bar-to-bar battles.

A motocross bike's single piston must endure an explosive environment, and needs to perform with efficiency and durability. Based on racing data and on-track experience, in 2013 Suzuki redesigned the piston, piston pin and connecting rod of the RM-Z450. With a new shape – designed through Finite Element Method (FEM) analysis used in factory racing – the new piston is 13% lighter than in the previous model while retaining rigidity. The reshaped connecting rod is lighter and the piston pin has been made shorter and more durable. As a result, the RM-Z450 delivers faster throttle response, plus increased bottom to mid-range power and torque. These traits deliver the efficient durability and powerful performance racers need to win.

Piston pin
To reduce friction loss and increase performance, Suzuki coated the RM-Z450’s piston pin with Diamond-Like Carbon (DLC) coating. Suzuki uses similar DLC coatings in its suspension of the Hayabusa, the legendary Sportbike. This surface finish helps reduce friction, and increase durability. Add this feature to the piston pin’s shorter and lighter design, and the result is noticeably stronger throttle response.

Increasing the exhaust pipe’s length by 50mm better tunes the engine to deliver stronger low-end and mid-range power output. A new silencer has redesigned construction with inner pipes that meet FIM-enforced sound control regulations without jeopardizing engine power output.

Transmission & Shift Cam
RM-Z racers will enjoy smoother and more precise shifting on the 2014 models with the RM-Z450’s updates for more precise shifting performance. Suzuki changed the shape of the shift cam to deliver that shifting precision plus smoother shift feel.

Suzuki updated the electronics that help control the battery-less fuel-injection system on the RM-Z450. The new ECM now has a higher-performance processor for more powerful engine management. This component upgrade increases response all the way from the rider’s throttle input to the fuel delivery through the multiple hole fuel injector. And since the ECMs are now waterproof, they resist damage from water and mud, and that helps keep racers at the front of the pack. The electrical systems also get a new magneto with increased power-generating performance for even easier starting. And with revised settings in the ignition coil, the RM-Z450 delivers strong roll-on power and increased throttle response.

The RM-Z450’s intake cam timing and lift are revised, giving the bike’s power a more linear output for better control.

Chassis Design Concept
Racers know that, in and out of a corner, precision cornering and race-track stability has always been a prime feature of Suzuki’s motocross bikes. But that doesn’t mean engineers left “good enough” alone. With enhanced engine performance as well as refined handling control, the RM-Z450 will continue to be the choice of champions, and of those soon-to-become champions.

To ensure the frame’s rigidity is well balanced, engineers reviewed and refined the shape and construction of the frame and the seat rail. The result is an ideal balance of nimble handling for technical sections and straight-line stability for high-speed sections.

Front Fork
The RM-Z450 now use the latest Showa Separate Function front Fork (SFF). The SFF works by separating the damper in left leg from the spring housed in the right leg. Dividing the fork’s functions allows for lighter overall construction with reduced friction, resulting in improved damping performance and ride control. The forks’ inner tubes are now 48mm in diameter; the larger size gives higher stability. Spring pre-load is adjustable, by a gold-anodized adjuster, allowing a wider range of adjustment settings overall.

Rear Suspension
To maintain the RM-Z’s renowned handling performance, the rear suspension features setting changes and adjustments which best compliment  the increased engine performance and front fork changes. Overall, the design allows enhanced suspension performance for a wider variety of riders.

Dimensions and Weights

Overall length: 2190mm (86.2in)
Overall width: 830mm (32.7in)
Overall height: 1270mm (50in)
Wheelbase: 1495mm (58.9in)
Seat height: 955mm (37.6in)
Kerb Mass: 113kg (249.1lbs)
Fuel capacity: 6.2litres (1.4 UK gallons)
Ground clearance: 325mm (12.8in)

Engine Specifications

Engine capacity: 449cc
Engine: 4-stroke, liquid-cooled, DOHC
Bore: 96.0 mm x 62.1 mm
Compression ratio: 12.5:1
Lubrication: Semi-dry sump
Ignition: Electronic Ignition (CDI)
Fuel system: Fuel injection
Transmission: 5-speed constant mesh
Drive: Chain

Chassis Specification

Front suspension: Inverted telescopic, coil spring, oil damped
Rear suspension: Link type, coil spring, oil damped
Front brakes: Disc
Rear brakes: Disc
Front tyres: 80/100-21 51M, tube type
Rear tyres: 110/90-19 62M, tube type