Suzuki RMX450Z

Suzuki RMX450
Manufacturer	Suzuki
Also called	RMX450Z
Production	2010 - 16
Class	Motocross
Engine	Four stroke, single cylinder, DOHC, 4 valve per cylinder.
Compression ratio	11.6:1
Ignition	Digital CDI
Spark Plug	NGK CR8EIB-10 ‘10, ‘17-19
Transmission	5 Speed, constant mesh
Final Drive	Chain: 520x114 ‘10, ‘17-19
Front Sprocket	13T ‘10, ‘17-19
Suspension	Front: SHOWA 47mm telescopic forks, pneumatic/coil spring, oil damped Rear: Swingarm, link type, SHOWA piggyback-reservoir shock
Brakes	Front: Single 250mm disc 2 piston caliper Rear: Single 220mm disc 1 piston caliper
Front Tire	80/100 - 21
Rear Tire	110/100-18
Wheelbase	1481 mm / 58.3 in
Weight	123.5 kg / 272.3 lbs. (wet)
Oil Filter	K&N KN-207
Recommended Oil	Suzuki ECSTAR 10w40
Fuel Capacity	6.1 Liters / 1.6 US gal / 1.3 Imp gal
Manuals	Service Manual

Engine

The engine was a Liquid cooled cooled Four stroke, single cylinder, DOHC, 4 valve per cylinder.. The engine featured a 11.6:1 compression ratio.

Drive

Power was moderated via the Wet multi-plate.

Chassis

It came with a 80/100 - 21 front tire and a 110/100-18 rear tire. Stopping was achieved via Single 250mm disc 2 piston caliper in the front and a Single 220mm disc 1 piston caliper in the rear. The front suspension was a SHOWA 47mm telescopic forks, pneumatic/coil spring, oil damped while the rear was equipped with a Swingarm, link type, SHOWA piggyback-reservoir shock. The RMX450Z was fitted with a 6.1 Liters / 1.6 US gal / 1.3 Imp gal fuel tank. The wheelbase was 1481 mm / 58.3 in long.

Photos

Overview

The off-road motorcycle shares much of the same DNA as Suzuki’s RM-Z450, including its 4-stroke, liquid-cooled 449cc engine. The DOHC lump does have a few tweaks, like a modified inlet tract and revised cam profiles aimed at increasing low and mid-rpm power, while the 5-speed constant mesh transmission has wider gear ratios. It’s also got a new engine protector plate to defend against obstacles enduro riders might encounter. The RMX450Z’s frame, suspension, and bodywork meanwhile are also almost identical to the RM-Z450.

"The public has been asking us for this bike for some time now, so it's a bike whose time has come,” said Suzuki Great Britain’s David Taylor.

In its conversion from motocrosser to enduro, Suzuki outfitted the RMX450Z with an electric starter and a lighting kit. It does have a back-up kick start, though, and is equipped with a large magneto-generator that charges the battery and powers the lights. Other road-friendly goodies like a side kickstand and digital instruments delineate the enduro from its MX brother. The instrument cluster has a standard and sport mode, with the standard mode displaying speed, time, two trip lengths, and voltage, while the sport mode is more specialized, displaying the timer, tripmeter, average speed and tire-diameter correction. It also comes with a low fuel light because running out of gas in the middle of nowhere is never fun.

The RMX-450Z will sport an 18-inch rear wheel that caters to serious enduro off-road riding. Showa supplies the suspension, with an adjustable 47mm telescopic fork teamed with a Showa piggyback reservoir-style rear shock with two-way adjustable rebound damping and preload adjustments. The suspension’s spring rates have been retuned to meet enduro demands.

Suzuki’s newest off-road motorcycle features the proven Keihin fuel injection system from the RM-Z. The only noticeable difference is that the enduro’s airbox comes with a hinged lid to make it easier to maintain and to try and keep dust out better.

The 2010 RMX450Z sports the slim, aggressive styling of its motocross counterpart, and weighs in with a claimed curb weight of 272.3 lbs. Its 1.6-gallon tank is the same size as the RM-Z450, which begs to question why the enduro didn’t get a little larger fuel cell to give it a broader range.

Make Model	Suzuki RMX 450Z
Year	2010 - 16
Engine Type	Four stroke, single cylinder, DOHC, 4 valve per cylinder.
Displacement	449 cc / 27.4 cu in
Bore X Stroke	96 x 62.1 mm
Compression	11.6:1
Cooling System	Liquid cooled
Lubrication System	Suzuki Advanced Sump System
Induction	Fuel Injection
Ignition	Digital CDI
Starting	Electric
Clutch	Wet multi-plate
Transmission	5 Speed, constant mesh
Final Drive	Chain
Primary Reduction	2.708 (65/24)
Gear Ratio	1st 2.153 (28/13) / 2nd 1.611 (29/18) / 3rd 1.250 (25/20) / 4th 1.000 (19/19) / 5th 0.826 (19/23)
Final Reduction	3.923 (51/13)
Front Suspension	SHOWA 47mm telescopic forks, pneumatic/coil spring, oil damped
Rear Suspension	Swingarm, link type, SHOWA piggyback-reservoir shock
Front Brakes	Single 250mm disc 2 piston caliper
Rear Brakes	Single 220mm disc 1 piston caliper
Front Tire	80/100 - 21
Rear Tire	110/100-18
Rake	29o 18'
Trail	129.5 mm / 5.1 in
Dimensions	Length: 2184 mm / 86.0 in Width: 831 mm / 32.7 in Height: 1270 mm / 50.0 in
Wheelbase	1481 mm / 58.3 in
Ground Clearance	320 mm / 12.6 in
Seat Heigtht	955 mm / 37.6 in.
Wet Weight	123.5 kg / 272.3 lbs.
Fuel Capacity	6.1 Liters / 1.6 US gal / 1.3 Imp gal