Suzuki DR-Z 400 S Buyer's Guide

The Machine's Character

A 398 cc liquid-cooled single, 40 hp, 29 lb-ft, and almost nothing else. That is the whole idea behind the DR-Z 400 S. Steel tube frame, five speeds, a 21-inch front wheel, 11.8 in (300 mm) of ground clearance and close to a foot of travel at both ends put it in genuine dirt bike territory, with a plate on the back. There is no ABS, no traction control, no ride modes, no screen to scroll through. Suzuki built a dual-sport defined by what it leaves out, and the aftermarket that grew around it is enormous.

It earns its keep in the dirt. The 40 hp figure looks small on paper and matters very little in the terrain this bike was built for, where drive and traction count for more than peak output. It ages the way simple machines age: cheap to run, easy to work on in your own garage, still worth fixing years down the road. Buy it if your riding means dirt roads, desert two-track and technical trail with a short road section at each end. The caveats are honest ones. A 36.8 in (935 mm) seat, a 2.6 gal (10 L) tank and a 94 mph (151 km/h) top speed set real limits.

Hard Numbers

Spec sheets don't ride bikes, but they set the baseline.

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Key specifications
Power	40 hp (29 kW)
Torque	29 lb-ft (39 Nm)
Displacement	398 cc
Engine	Single-cylinder
Cooling	Liquid-cooled
Gearbox	5-speed
Final drive	Chain
Fork	Telescopic
Front tire	80/100-21
Rear tire	120/90-18
Ground clearance	11.8 in (300 mm)
Front travel	11.3 in (287 mm)
Rear travel	11.6 in (295 mm)
Seat height	36.8 in (935 mm)
Wet weight	317 lb (144 kg)
Fuel capacity	2.6 gal (10 L)
Top speed	94 mph (151 km/h)

The Truth on the Trail

This part comes from years of listening rather than riding: paddock conversations, owner talk at club nights, and the messages riders send Nils directly once they have lived with a bike. On the DR-Z 400 S the chatter lines up unusually well. The praise sits almost entirely off-road, and nearly every complaint shows up once the ride turns to pavement.

What riders trust in the dirt

Riders describe a machine light enough to float through technical ground that makes bigger bikes feel like hard work, with torque and suspension travel that handle sand and rocky singletrack the same way. Just as often they talk about how little goes wrong. High mileage on plain oil changes comes up constantly, and owners point to a parts supply deep enough to take the same bike toward supermoto or long distance travel.

Where the pavement wears on riders

The five-speed gearbox is the loudest gripe. On long road transfers riders run out of gears, and the revs climb until the bike feels strained. The carburetor is the other recurring theme: periodic cleaning, re-jetting when altitude or temperature changes, and hard starting after a spell in the garage. Some owners add that the dirt-tuned suspension passes bumps straight through on pavement.

Known issues

Automatic cam chain tensioner (ACCT) can fail

engine occasional

The stock ACCT on early production models (especially 2000‑2001) is prone to over‑extending or sticking, allowing the cam chain to jump timing and potentially cause catastrophic engine damage. Many owners retrofit a manual tensioner as preventative maintenance.
Electrical component failures (stator, reg/rec)

electrics occasional

The charging system can give trouble with age—stator windings may burn out and the regulator/rectifier can overheat, leading to a dead battery or intermittent electrical faults. Upgrading to a Series‑type reg/rec (e.g., SH775) is a common fix.

The Expert Benchmark

Where this Suzuki DR-Z 400 S pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.

What kind of bike this is — character vs. the class

Technical Terrain Survival

Low-End Tractability

Clutch-and-Throttle Modulation

Robust Crash Tolerance

Fatigue Resistance Over Hours

Standing-Rider Balance

Grip Before Horsepower

This bike Class average

Head-to-head: Suzuki DR-Z 400 S vs. its rivals

Power

40 hp This bike 31 hp Yamaha WR 250R 39 hp Honda XR650L 40 hp KTM 250 EXC-F SIX DAYS 41 hp Kawasaki KX250X

Torque

29 lb-ft This bike 18 lb-ft Yamaha WR 250R 47 lb-ft Honda XR650L 21 lb-ft KTM 250 EXC-F SIX DAYS 20 lb-ft Kawasaki KX250X

Displacement

398 cc This bike 250 cc Yamaha WR 250R 644 cc Honda XR650L 250 cc KTM 250 EXC-F SIX DAYS 249 cc Kawasaki KX250X

Wet weight

317 lb This bike 295 lb Yamaha WR 250R 348 lb Honda XR650L 243 lb Kawasaki KX250X

Top speed

94 mph This bike 87 mph Yamaha WR 250R

Seat height

36.8 in This bike 36.6 in Yamaha WR 250R 37.0 in Honda XR650L 37.8 in KTM 250 EXC-F SIX DAYS 37.2 in Kawasaki KX250X

The 'Should I Buy It?' Score

Forget spec-sheet bragging. Here's who the DR-Z 400 S is actually built for.

Factory Butte in Utah's high desert badlands, captured in daylight under clear blue sky. The formation's distinctive multi-colored strata and steep erosional gullies dominate the frame. Arid terrain with minimal vegetation stretches across the foreground and background. Typical American Southwest landscape. — NastyNils / Nastynils.com

Best motorcycle for Moab?

Moab-grade technical terrain is what this bike is built for: light enough to place exactly where you want it, tough enough to take a full day of abuse, and simple enough to fix in camp with hand tools.

Made for Bar M / Kane Creek · Imperial Sand Dunes · Johnson Valley OHV Area

Best motorcycle for BDR routes?

It will clear any BDR section you point it at. The limits are logistics: a 2.6 gal (10 L) tank and a 94 mph (151 km/h) top speed make pavement transits and fuel planning the hard part.

Made for AZBDR — Arizona Backcountry Discovery Route · California BDR South · COBDR — Colorado Backcountry Discovery Route

Alternatives to the Suzuki DR-Z 400 S

If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.

Any price note compares both bikes at the same age — the youngest age both have on the used market — against this Suzuki DR-Z 400 S. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.