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{{Motorcycle | {{Motorcycle | ||
|name = Suzuki DR-Z400SM | |name = Suzuki DR-Z400SM | ||
|photo= DRZ400SMK5 yellow.jpg | |photo = DRZ400SMK5 yellow.jpg | ||
|aka = | |aka = | ||
|manufacturer = Suzuki | |manufacturer = Suzuki | ||
|parent_company = | |parent_company = | ||
|production = | |production = 2005 - 06 | ||
|model_year = | |model_year = | ||
|predecessor = | |predecessor = | ||
|successor = | |successor = | ||
|class = | |class = Supermotard | ||
|engine = | |engine = Four stroke, single cylinder, DOHC, 4 valve | ||
|bore_stroke = | |bore_stroke = | ||
|compression = | |compression = 11.3:1 | ||
|top_speed = | |top_speed = 145 km/h / 90 mph | ||
|power = | |power = | ||
|torque = | |torque = | ||
|ignition = | |fuel_system = | ||
|ignition = Digital CDI | |||
|spark_plug = {{sparkplug|NGK CR8E}} '05-07 | |spark_plug = {{sparkplug|NGK CR8E}} '05-07 | ||
|battery = {{battery|YUASA YT7B-BS}} '05-07 | |battery = {{battery|YUASA YT7B-BS}} '05-07 | ||
|transmission = | |transmission = 5 Speed | ||
|frame = | |final_drive = {{chain|520}} ‘05-19<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref> | ||
|suspension = | |frame = Chrome-moly steel frame, single front down tube | ||
|brakes = | |suspension =Front: Telescopic, 49 mm, oil-damped, 11-way compression damping, adjustable spring preload <br> | ||
|front_tire = {{tire|120/70-17}} | Rear: Link-type, fully adjustable spring preload, 26-way compression damping | ||
|rear_tire = {{tire|140/70-17}} | |brakes =Front: Single 300 mm floating disc, 2 [[piston]] [[caliper]] <br>Rear: Single 240mm disc, 1 piston caliper | ||
|rake_trail = | |front_tire = {{tire|120/70-17}} | ||
|wheelbase = | |rear_tire = {{tire|140/70-17}} | ||
|length = | |rake_trail = | ||
|width = | |wheelbase = 1460 mm / 57.5 in | ||
|height = | |length = | ||
|seat_height = | |width = | ||
|dry_weight = | |height = | ||
|wet_weight = | |seat_height = 890 mm / 35.0 in | ||
|fuel_capacity = | |dry_weight = 137 kg / 302 lbs | ||
|oil_capacity = | |wet_weight = 146 kg / 321 lbs | ||
|oil_filter = K&N KN-136 | |fuel_capacity = 10 Liters / 2.6 US gal / 2.2 Imp gal | ||
|recommended_oil= Suzuki ECSTAR 10w40 | |oil_capacity = | ||
|fuel_consumption = | |oil_filter = {{oilfilter|K&N KN-136}} | ||
|turning_radius = | |recommended_oil=Suzuki ECSTAR 10w40 | ||
|fuel_consumption = | |||
|turning_radius = | |||
|related = [[Suzuki DR-Z400]]<br />[[Suzuki DR-Z400S]] | |related = [[Suzuki DR-Z400]]<br />[[Suzuki DR-Z400S]] | ||
|competition = | |competition = | ||
}} | }} | ||
The '''Suzuki DR-Z400SM''' is a [[motorcycle]] produced by [[Suzuki]] from 2005 to 2007. It could reach a top speed of 145 km/h / 90 mph. | |||
==Engine== | |||
The engine was a Liquid cooled cooled Four stroke, single cylinder, DOHC, 4 valve. The engine featured a 11.3:1 [[compression ratio]]. | |||
==Drive== | |||
Power was moderated via the Wet, multiple discs, cable operated. | |||
==Chassis== | |||
It came with a 120/70-17 front [[tire]] and a 140/70-17 rear tire. Stopping was achieved via Single 300 mm floating disc, 2 piston caliper in the front and a Single 240mm disc, 1 piston caliper in the rear. The front suspension was a Telescopic, 49 mm, oil-damped, 11-way compression damping, adjustable spring preload while the rear was equipped with a Link-type, fully adjustable spring preload, 26-way compression damping. The DR-Z 400SM was fitted with a 10 Liters / 2.6 US gal / 2.2 Imp gal fuel tank. The bike weighed just 137 kg / 302 lbs. The wheelbase was 1460 mm / 57.5 in long. | |||
==2005== | ==2005== | ||
<gallery mode='packed-hover'> | |||
File:DRZ400SMK5 yellow.jpg|left|thumb|2005 Suzuki DR-Z400SM in yellow | |||
< | File:DRZ400SMK5 black.jpg|left|thumb|2005 Suzuki DR-Z400SM in black | ||
</gallery> | |||
== 2006 == | == 2006 == | ||
<gallery mode='packed-hover'> | |||
File:DRZ400SMK6_pro_yellow.jpg|left|thumb|2006 Suzuki DR-Z400SM in yellow | |||
File:DRZ400SMK6_pro_black.jpg|left|thumb|2006 Suzuki DR-Z400SM in black | |||
File:DRZ400SMK6 Yellow.jpg|left|thumb|2006 Suzuki DR-Z400SM in yellow | |||
< | File:DRZ400SMK6 Black.jpg|left|thumb|2006 Suzuki DR-Z400SM in black | ||
</gallery> | |||
== 2007 == | == 2007 == | ||
<gallery mode='packed-hover'> | |||
File:DRZ400SMK7_her_yellow.jpg|left|thumb|2007 Suzuki DR-Z400SM in yellow | |||
File:DRZ400SMK7_her_black.jpg|left|thumb|2007 Suzuki DR-Z400SM in black | |||
File:DRZ400SMK7 aYellow.jpg|left|thumb|2007 Suzuki DR-Z400SM in yellow | |||
File:DRZ400SMK7 Black.jpg|left|thumb|2007 Suzuki DR-Z400SM in black | |||
</gallery> | |||
== Photos == | |||
<gallery mode='packed-hover'> | |||
File:Suzuki-DRZ400SM-05--4.jpg|600px|Suzuki DR-Z 400SM | |||
File:Suzuki-DRZ400SM-05--3.jpg|600px|Suzuki DR-Z 400SM | |||
File:Suzuki-DRZ400SM-05--2.jpg|600px|Suzuki DR-Z 400SM | |||
File:Suzuki-DRZ400SM-05.jpg|600px|Suzuki DR-Z 400SM | |||
</gallery> | |||
== Overview == | |||
- Suzuki's new Supermotard model based on DR-Z400S - combines Supermotard | |||
style and features in a narrow, lightweight street-legal package | |||
- Long travel, Showa-brand inverted front fork derived from RM250 - features | |||
adjustable compression/rebound damping and alumite coating on inner tube | |||
surfaces for smooth action | |||
- A fully-adjustable rear shock absorber with high/low speed compression | |||
damping adjuster and aluminum swingarm for precise rear wheel control | |||
- Strong braking performance supplied by a front disc brake with a large | |||
300mm floating-type rotor and dual-piston caliper, plus 240mm rear disc | |||
brake with single-piston caliper | |||
- Black-painted 17" aluminum rims and radial tires: 120/70-R17 front, | |||
140/70- R17 rear | |||
CHASSIS FEATURES: | |||
- Compact digital instrument cluster with speedometer, odometer, twin-trip | |||
meters with addition/subtraction capability, clock, timer and stopwatch | |||
functions | |||
- On-road legal lighting with bright 60/55 watt halogen headlight, compact | |||
tail/stoplight, lightweight, rubber-mounted turn signals and horn | |||
- Narrow profile with smooth transitions between the tank, seat and bodywork | |||
- Chrome-moly steel frame is torsionally strong with minimal weight. The | |||
backbone tube, front down tube, and steering head gussets form the dry-sump | |||
engine oil tank | |||
- A bolt-on aluminum subframe helps reduce weight and simplify maintenance | |||
- Chrome-moly steel footpegs, aluminum rims/hubs, plus engine guard and rear | |||
disc guard | |||
ENGINE FEATURES: | |||
- Lightweight 398cc, DOHC, liquid-cooled, dry-sump engine produces strong, | |||
usable low-rpm power | |||
- Compact 4-valve cylinder head with 36mm intake valves, 29mm exhaust | |||
valves, narrow 28º included valve angle and shim-under-bucket valve | |||
adjustment system | |||
- SCEM-plated cylinder (nickel-silicon-phosphorous) is lighter and more | |||
durable than an iron liner with excellent heat transfer properties | |||
- Forged aluminum piston is 10% lighter than a cast piston and receives | |||
additional oil-cooling to the piston crown through a crankcase oil jet | |||
- Compact 5-speed transmission utilizes a cable-operated clutch with | |||
separate outer cover for simplified clutch maintenance | |||
- Additional weight savings with magnesium valve cover, clutch cover, and | |||
magneto cover | |||
- Smooth throttle response with a Mikuni BSR36 CV-type carburetor fed by | |||
6-liter airbox. The left side cover has quick-release fasteners for easy | |||
access to the air filter | |||
- Electric start with lightweight starter motor and a compact 6.5 amp | |||
maintenance-free battery | |||
- Automatic decompression system for quick/easy engine starts | |||
- Thermostatically-controlled cooling fan mounted to the left radiator helps | |||
maintain consistent operating temperature in traffic | |||
MCN Review | |||
ISAAC NEWTON WOULD have approved. It was Sir | |||
Isaacs Second Law of Motion: Force = Mass x Acceleration, that first | |||
explained the relationship between an objects weight and how that would affect | |||
its dynamic behavior. In fact, you could call | |||
Newton the godfather of Power/Weight Ratio-based performance, and Lotus Colin | |||
Chapman his greatest disciple. And no street-legal motorcycle illustrates the | |||
physics better than the DR-Z400SM. | |||
Based on the highly regarded DR-Z400S dual-sport, | |||
obsessive calorie counting has resulted in a full-up wet weight of just 318.5 | |||
lbs, | |||
pushed by 33.4 horsepower measured at the back wheel. It doesnt sound like | |||
enough to be exciting, but it most certainly is. | |||
The SM designation stands for Super-Moto, the | |||
latest competition craze, wherein lightweight four-stroke motocross bikes are | |||
modified with big brakes and 17-inch wheels to race on combination dirt and | |||
asphalt race courses. The concept goes back to the | |||
Superbikers a made-for-TV event that ran on ABCs Wide World Of Sports from | |||
1979 to 1985, which pitted talented motorcyclists | |||
from all disciplines against one another on individually modified, run-what-ya-brung | |||
bikes. The idea appeared to die out when the TV | |||
series expired, but was resurrected by the French a few years ago, and has since | |||
proved very popular in Europe with a growing following in America. Although | |||
serious competition machines have been produced for the class by KTM, Husqvarna | |||
and others, the | |||
new Suzuki is the first Japanese super-moto to be sold in America, and is | |||
completely street legal as delivered, unlike some of the European models. Its | |||
arrival in Suzukis US warehouses has been largely unheralded, as if the company | |||
wanted to test the waters before committing serious advertising dollars. But | |||
were here to tell you that if you like minimalist machines, youll really like | |||
the Suzuki DR-Z400SM. | |||
Its not necessary to think of the SM as just a | |||
competition bike with lights, because as the Europeans have found, the supermoto | |||
also makes a perfect urban assault vehicle, probably quicker from point A to | |||
point B in densely populated cities than just about any other motorcycle, as | |||
well as a terrific sportbike where rougher and poorly kept roads predominate. | |||
THE MOTOR | |||
If you were disappointed that the latest 450cc MX engine wasnt chosen to power | |||
the bike, consider that all the state-of-the-art fourstroke motocross engines | |||
are very highly stressed and maintenance intensive. They also werent designed | |||
to pass emissions or the durability cycles required for compliance. | |||
The DR400S motor was, and its no slouch either. | |||
With a bore of stroke of 90mm x 62.6mm, it will rev much higher than larger | |||
displacement singles, hitting the rev limiter at 9750 rpm. Remember that an | |||
engines rev range is an under-appreciated measure of its true performance. | |||
When two engines make the same horsepower, but | |||
one revs 50% higher, the area under the power curve is much larger for the | |||
higher-revving motor, and quarter-mile times back up the significance of the | |||
difference. Counterbalanced so that it is very smooth | |||
running, it wont try to shed nuts and bolts at high revs or tire the rider. | |||
To achieve 33.4 hp from 24.3 cubic inches (398cc) | |||
the engine uses dual overhead cams to operate four very large | |||
valves; pairs of 36mm intakes and 29mm exhausts, surrounding a centrally located | |||
spark plug for quick, efficient combustion. The piston is a forged slipper type, | |||
to reduce reciprocating weight by at least 10% over a more | |||
conventional cast slug. | |||
The pistons top ring is an expensive L-section | |||
Dykes-type, which reduces emissions by reducing trapped fuel while it improves | |||
sealing efficiency. The aluminum cylinder uses no iron liner, but instead is | |||
plated with Suzukis proprietary nickel-silicon-phosphorus-carbide (SECM) | |||
material to improve heat transfer and reduce engine weight. And finally, the | |||
fuel enters via a big 36mm Mikuni CV carb. | |||
Although it could no doubt be tuned to make even | |||
more power, as delivered it gives a broad torque curve that makes a harmonious | |||
match for the machines weight and five-speed transmission. The overall effect | |||
is a smooth steady flow thats easy to modulate. | |||
Liquid-cooled for efficiency, a thermostatically | |||
controlled fan will engage in slow traffic to maintain airflow. Otherwise, the | |||
big air-scoops, sized for slower going on dirt, will direct plenty of airflow | |||
over the slim radiators on either side. | |||
The transmission shifts easily and the ratio | |||
spread has been worked out to optimize pull between gears. Although we would | |||
have welcomed a sixth gear, we were satisfied with five. (Note that the | |||
motocross four-strokes often have only four gears.) The clutch | |||
is cable operated, the pull is light and the engagement range is wide enough to | |||
make it easy to slip precisely. | |||
Fuel efficiency is another benefit obtained from | |||
Newtons Second Law, and we achieved nearly 45 mpg on average, riding | |||
enthusiastically. Although we never tried riding for fuel efficiency, wed guess | |||
50 mpg would have been possible. | |||
An electric starter is fitted and the engine | |||
features an automatic decompression device to ease starting effort. A choke | |||
button is fitted to the side of the carb and is necessary whenever the engines | |||
even moderately cold. After a minute or so, it will be warm enough to run | |||
without the extra enrichment. | |||
ROLLING CHASSIS | |||
Similar in design to Suzukis motocross bikes, the SMs chassis is a lightweight | |||
chromoly steel construction with the engine oil contained in the backbone and | |||
front downtube, so that the engine can be a dry-sump design, in order to keep | |||
the engines weight low in the frame. A bash plate protects the crankcase, but | |||
with nearly a foot of ground clearance, it shouldnt get scratched on pavement | |||
or even dirt roads. | |||
The | |||
lightweight plastic side panels are attached with D-ring Dzus fasteners, so that | |||
you have fast access to the air filter or battery. | |||
Incidentally, the battery is a compact 12V/10Amphr unit and resides under the | |||
left number panel opposite the muffler, where it is | |||
both high and low-speed compression damping, something you typically only find | |||
on high-end motocross equipment or expensive | |||
road-racing shocks. A remote reservoir type for fade resistance, it is also | |||
rebound and preload adjustable. | |||
The rear | |||
travel is 10.9". | |||
However, even with the slightly soft front springs, this is exceptional | |||
suspension and the ride is terrific, Barcalounger plush yet | |||
with great control and feedback, again thanks to the machines light weight. | |||
Other than the non-adjustable front preload, we couldnt | |||
think of any way to improve it. | |||
Brakes | |||
are an area where super-motos depart sharply from their dirt-bike counterparts | |||
and the equipment on the SM is again unique. | |||
The front disc is a big 310mm unit thats both thin in radial section and | |||
heavily drilled to reduce its weight further. Even a few holes in a brake disc | |||
increases its efficiency, as the gasses that otherwise build up between the pad | |||
and disc can be evacuated and any debris that might tend to get caught and score | |||
the disc or pads can usually exit before doing damage. | |||
The front | |||
caliper is a two-piston, singleaction type, lighter than a four-piston unit | |||
would be. Together they create powerful stopping force but are never grabby, | |||
making them ideal for good control on slippery surfaces as well as good | |||
pavement. The rear brake is another Swiss-cheesed disc, this one of 240mm, | |||
slowed by a single piston caliper. We were impressed with the rear brakes | |||
slowing power as well as how easy it was to avoid sliding | |||
the rear tire. | |||
The wheels are what really identify a super-moto. The enduro bikes lightweight | |||
hubs are laced to wide 17-inch black-anodized | |||
aluminum hoops in 3.50 and 4.50 widths front and back. And the tires are | |||
special, too, H-rated Dunlop Sportmax 208-compound radials in 120/70 front and | |||
140/70 rear sizes. The pressures specified are just 25 psi front and 29 back | |||
(solo, or 33 psi rear with a passenger). | |||
These things get noticeably hot and tacky in normal use and stick like | |||
glue to the turns. If they werent fitted to a bike like the SM, they | |||
probably wouldnt last very long. | |||
RIDING IMPRESSION | |||
Initially, the bike feels impossibly tall and short, and we wondered | |||
how it could handle securely with such an extreme layout. It took a | |||
while to adjust, but adjust we did. The first thing we learned was to | |||
be as smooth as possible. In fact, so little body movement is necessary, | |||
unless speeds were very high, wed just lean the bike under us, | |||
like you would a dirt bike. | |||
Of | |||
course, there was never a need to conserve lean angle with the high ground | |||
clearance and narrow footpegs. If the bike felt blown around too much on the | |||
freeway, wed just hug the tank with our knees, so that we would be less likely | |||
to over-control the handlebars. | |||
The way | |||
the bike can be balanced with the riders weight is another rare treat. Sitting | |||
in the center of the bike, you could easily influence which end got more grip as | |||
you shifted the weight of your torso front and back. On twisty roads, the bikes | |||
bottomless suspension insures that tires stay in constant contact with the road, | |||
and even on really rough ground that would get any other bike airborne, the SM | |||
stayed securely planted. Even better is the exquisite accuracy of the steering, | |||
enabling you to place the bike precisely where you want for maximum traction. | |||
During | |||
testing, the only limit to our tested stopping distances was the tendency to | |||
nose-stand (stoppie), which was | |||
aggravated by the softish fork springs and high Center of Gravity. | |||
The carbureted engine is a model of smooth control, never abrupt, and provides | |||
surprisingly adequate performance. Only in high-speed passing could we have | |||
asked for more horsepower. (However, all the aftermarket goodies created for the | |||
popular DR-Z400S enduro will bolt right on.) | |||
INSTRUMENTS/CONTROLS | |||
Like the enduro model, the SM gets a trick digital instrument cluster with a | |||
bright speedo, dual trips, odometer, clock and even a | |||
stopwatch. Subtraction functions are available on the trips and stopwatch as | |||
well. However, there is no tachometer, and youd probably be freaked if there | |||
were. The little engine wails to keep your pace high, turning 6170 rpm | |||
(calculated) @ 65 mph and 7595 @ 80 mph in top gear, but doesnt protest. In | |||
fact, the valve adjustment interval, 14,500 miles, suggests it will rev like | |||
this all day without frequent maintenance. | |||
Also, | |||
both the shifter and brake pedal have folding tips, a neat feature for hard-core | |||
use and the handlebars are braced for good measure. However, the sore spot in | |||
the package, the seat, will make you think the SM stands for sado-masochism. | |||
A towel | |||
over a two-byfour would be as soft. Worse, the top of the seat is so narrow that | |||
it fits between the bony rails of the pelvis, like some perverse wedgie. If you | |||
didnt have hemorrhoids before, you will if you dont fix it. Thankfully, we | |||
have an Air-Hawk pad stashed for such occasions. Without it, 50 miles would have | |||
been too far, with it, we had an ugly seat we could ride all day. At least | |||
upholstery is a cheap fix, as fixes go. What were they thinking? | |||
BOTTOM LINE | |||
To give Suzuki credit, not only are they the first Japanese company in the game | |||
stateside, but their machine is perhaps a purer expression of the concept than | |||
the street-legal 650cc supermotos that are available overseas from Honda and | |||
Yamaha. The SMs motor makes more power per cubic inch and is in a much lighter | |||
chassis than the bigger-bore machines. There wont be a lot to go around, so, if | |||
you want one, dont wait. | |||
{| class="wikitable" | |||
|- | |||
!Make Model | |||
|Suzuki DR-Z 400SM | |||
|- | |||
!Year | |||
|2005 - 06 | |||
|- | |||
!Engine Type | |||
|Four stroke, single cylinder, DOHC, 4 valve | |||
|- | |||
!Displacement | |||
|398 cc / 24.3 cu-in | |||
|- | |||
!Bore X Stroke | |||
|90 x 62.6 mm. | |||
|- | |||
!Cooling System | |||
|Liquid cooled | |||
|- | |||
!Compression | |||
|11.3:1 | |||
|- | |||
!Induction | |||
|Mikuni BSR36 CV carburetor | |||
|- | |||
!Lubrication | |||
|Dry sump | |||
|- | |||
!Ignition | |||
|Digital CDI | |||
|- | |||
!Battery | |||
|12V, 6.5Ah | |||
|- | |||
!Starting | |||
|Electric | |||
|- | |||
!Max Power | |||
|29.2 kW / 39.7 hp @ 8500 rpm (rear wheel: 24.9 kW / 33.4 hp | |||
|- | |||
!Max Torque | |||
|39 Nm / 3.98 kg-m / 28.8 lb-ft @ 6600 rpm | |||
|- | |||
!Clutch | |||
|Wet, multiple discs, cable operated | |||
|- | |||
!Transmission | |||
|5 Speed | |||
|- | |||
!Final Drive | |||
|Chain, #520 | |||
|- | |||
!Frame | |||
|Chrome-moly steel frame, single front down tube | |||
|- | |||
!Front Suspension | |||
|Telescopic, 49 mm, oil-damped, 11-way compression damping, adjustable spring preload | |||
|- | |||
!Rear Suspension | |||
|Link-type, fully adjustable spring preload, 26-way compression damping | |||
|- | |||
!Rear Wheel Travel | |||
|277 mm / 10.9 in | |||
|- | |||
!Front Brakes | |||
|Single 300 mm floating disc, 2 piston caliper | |||
|- | |||
!Rear Brakes | |||
|Single 240mm disc, 1 piston caliper | |||
|- | |||
!Front Tire | |||
|120/70-17 | |||
|- | |||
!Rear Tire | |||
|140/70-17 | |||
|- | |||
!Dimensions | |||
|Length 2225 mm / 87.6 in Width 855 mm / 33.7 in. | |||
|- | |||
!Wheelbase | |||
|1460 mm / 57.5 in | |||
|- | |||
!Seat Height | |||
|890 mm / 35.0 in | |||
|- | |||
!Ground Clearance | |||
|260 mm / 10.2 in | |||
|- | |||
!Dry Weight | |||
|137 kg / 302 lbs | |||
|- | |||
!Wet Weight | |||
|146 kg / 321 lbs | |||
|- | |||
!Fuel Capacity | |||
|10 Liters / 2.6 US gal / 2.2 Imp gal | |||
|- | |||
!Consumption Average | |||
|5.5 L/100 km / 18.2 km/l / 42.8 US mpg / 51.4 Imp mpg | |||
|- | |||
!Standing ¼ Mile | |||
|15.0 sec | |||
|- | |||
!Top Speed | |||
|145 km/h / 90 mph | |||
|} | |||
== Videos == | |||
{{#ev:youtube|https://www.youtube.com/watch?v=X_ZC1qhDxug|600|center}} | |||
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[[Category:Suzuki motorcycles|DRZ400SM]] | [[Category:Suzuki motorcycles|DRZ400SM]] | ||