Liquid cooled, four stroke, single cylinder,
DOHC, 4 valve per cylinder.
Capacity
398
Bore x Stroke
90 x 62.6 mm.
Compression Ratio
11.3:1
Induction
Mikuni BSR36
Ignition /
Starting
Digital CDI /
electric
Max Power
40 hp 29.2 kW @ 8500 rpm
Transmission /
Drive
5 Speed / chain
Front Suspension
Telescopic, oil-damped,
11-way compression damping, adjustable spring preload
Rear Suspension
Link-type, fully
adjustable spring preload, 26-way compression damping
Front Brakes
Single 250mm disc 2 piston caliper
Rear Brakes
Single 220mm disc 1 piston caliper
Front Tyre
80/100-21
Rear Tyre
120/90-18
Seat Height
945 mm
Dry-Weight
119 KG
Fuel Capacity
10 Litres
The DR-Z400 and DR-Z400E are identical except for the electric
starter on the "E" version (the one we tested). According to Suzuki, the
electric starter adds 13 pounds of weight. The kick start DR-Z400 has a claimed
dry weight of 249 pounds, while the DR-Z400E weighs in at 262.3 pounds. The dual
sport (the "S" model) weighs in at 291 pounds dry.
The two lighter models have very trick componentry (some of
which is shared with the heavier dual sport, but not all). The front forks are
right off a 1996 RM250 and feature huge 49mm sliders. They are also adjustable
for compression (14 step) and rebound (18 step). In back, these bikes feature a
fully adjustable, progressive linkage shock absorber (21 step rebound and 26
step compression adjustments). Of course, the shock is also adjustable for
spring preload. In other words, these off-road bikes have suspension worthy of a
cutting-edge motocrosser.
The chassis is a lightweight and stiff chrome-moly steel frame
with, once again, motocross-level stiff swingarm. The hubs and wheels are
aluminum.
Are you getting the idea, here? This is not your father's
trail bike. The dual disc brakes and generous use of magnesium on the engine
cases are also indicative of the level of competition in this new arena of
four-stroke off-road/enduro machinery.
Dirck hits a drop-off on the trail (Click to Enlarge)
Enough about the technical stuff. What's this thing like to
ride? In a word, it's a blast! Even though we rode the heavier, electric start
model (claimed to be 262 pounds dry, as mentioned above), the weight is carried
low, and Suzuki has done an exceptional job of mass centralization. The bike,
therefore, feels light and maneuverable. How light does it feel? My son Alex and
I have both been riding 125cc motocross bikes lately, and we both found the
DR-Z400E easy to handle -- even on a relatively tight, natural terrain motocross
track. The bike just does not feel heavy, except in limited circumstances
discussed below.
You do feel the weight when jumping the bike. The electric
start model has a battery mounted under the rear fender, on the opposite side of
a fairly heavy and restrictive muffler. If the bike kicks sidewise at all off a
jump, you feel the pendulum effect of this weight over the rear end of the bike.
You also definitely notice the weight on jump landings.
An after market, slip-on muffler system would probably go a
long way toward removing the feeling we described above. We haven't yet verified
the amount of weight you can save with an after market muffler, but it is
probably substantial. The stock muffler is so quiet you could ride this thing in
your backyard and your neighbors wouldn't notice. An after market muffler would
make your neighbors a lot angrier, but you would probably save at least four
pounds of high-placed weight over the rear tire.
This bike is not a motocross bike, however, and
motocross-style jumps, although doable on this bike, are not its cup of tea.
This is a trail bike (or enduro machine) through and through. As such, it
excels.
While on a 25 mile trail ride yesterday, featuring fast, open
trails, tight trails, and modest hill climbs, I just couldn't remove the smile
from my face. This Suzuki 400 just hooks up and hauls. The suspension soaks up
everything in its path, and I felt comfortable on the bike within a matter of
minutes.
As a two-stroke motocross rider for many years, I was amazed
at the broad spread of power. I tried a few hill climbs a gear higher than
normal, just to experience the low end torque of this four-stroke 400. The
DR-Z400E pulled these hills without breaking a sweat.
This bike likes to rev, however. Although it pulls well off
the bottom, it is in the upper mid-range when it really starts to surge forward
with authority. Given the extremely restrictive nature of the stock exhaust, I
was shocked at how well this bike pulled on top.
My son Alex is 5 feet 9 inches tall, weighs 145 pounds and
normally rides a 2000 KX125 motocrosser. He loved the DR-Z400E, and told me he
is anxious to try it on a closed motocross track with double jumps! Somehow,
Suzuki packaged the weight of this bike beautifully. The overall handling is
truly superb.
Although we haven't played much with the suspension clickers,
we did dial in the rear shock by reducing compression by one click and
increasing rebound damping one click. It seemed to reduce a tendency of the rear
tire to hop on fast, choppy trails. We also went in two clicks on each of the
fork's rebound dampers, to slow their rebound. This also reduced some kicking
experienced with the front fork. I am sure that, with more time, we could dial
the suspension in even better. The stock spring rates seem about right for
aggressive trail riding (I weigh 185 pounds and, as I said, Alex weighs 145).
The front brake is excellent. It provides good feel, is not
grabby, and it hauls the bike down quickly. Due to the engine braking (which I
am not used to, since I normally ride a two-stroke), I didn't use the rear brake
much (I didn't need to).
The ergonomics of the bike are also excellent. The bike is
slim and feels very much like a motocrosser. The clutch action is very light and
smooth, and we had no problems with the clutch during our testing. The only
negative comment we have about the ergonomics is the somewhat low and close
handlebar position. A higher handlebar bend with less rearward sweep might solve
this, however.
NOTE: Some of the photos on
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Specs, it will be removed upon request. Any correction or more
info on these bikes will kindly beappreciated
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