Suzuki DR-Z4SM - First Laps on Tarmac and Track

Our tests took us around Wiener Neustadt and the Bad Fischau motorsport arena, where we could thoroughly test the A2 supermoto for the first time. A video will soon follow, in which the Suzuki will face off against the also new KTM 390 SMC R. To ensure a fair comparison, we swapped the stock tires on both bikes for Conti Attack SM 2s. This way, both contenders can be evaluated under identical conditions on the track and the road.

The design features clean lines stretching from the front to the rear, giving it a sporty and sleek appearance typical of a classic supermoto. The headers, exhaust, airbox, black steel frame, and aluminum swingarm all complement the design seamlessly. Additionally, there's a new LED headlight, LED indicators, and LED taillights.

The 398 cc single-cylinder four-stroke engine meets the Euro-5+ standard, delivering 38 hp at 8,000 rpm and 37 Nm at 6,500 rpm—figures that are exceptionally solid in the A2 segment. Thanks to ride-by-wire, the throttle response is precise, the motor is finely tuned, and it runs smoothly at lower revs. This is perfect for relaxed cruising, yet it offers enough pull to make quick progress on the road without ever overwhelming the rider. A bit more mid-range torque would have increased the fun factor, but overall, the power delivery feels well-balanced.

On the track, the engine also shows its strengths: powerful enough to accelerate cleanly out of corners without being brutal. However, on long straights, it lacks that final bit of thrust—performance noticeably drops off around 8,500 rpm. This makes it clear: the DR-Z4SM is a fun machine designed for agility and maneuverability, not for top speed.

The 5-speed gearbox shifts smoothly, making it particularly pleasant for city riding. However, on highways and racetracks, the absence of a sixth gear is noticeable: the first gear is relatively long, while gears two to four are short—frequent shifting is required, and by the fifth gear, one often wishes for an additional overdrive. Suzuki justifies the five-speed setup with a more compact design and increased durability. While this sounds reasonable, it doesn't change the fact that you often find yourself wishing for another gear.

Notably positive is the oil-bath multi-plate clutch with Suzuki Clutch Assist System (SCAS). Even during sporty riding, it allows smooth shifts without rear-wheel slip. Despite the traditional cable operation, gear changes can be finely modulated with just one finger. The clutch assist functions similarly to a slipper clutch, reliably preventing rear-wheel lockup during downshifts. However, what's missing is a quickshifter.

Fully fueled, the Suzuki DR-Z4SM weighs in at 154.5 kilograms, a figure that is immediately noticeable in practice. Whether on the road or the track, the bike can be tipped into corners effortlessly and always responds with precision. The rigid steel frame provides crystal-clear feedback, while the cleverly shaped aluminum swingarm adds extra stability and handling precision.

The geometry also fits the bill: with a 63.5-degree steering head angle, 95 mm of trail, and a 1,465 mm wheelbase, it achieves a balanced mix of agility and stability. The seat height is 890 mm—moderate for a supermoto—and can be reduced to 860 mm with an optional accessory seat, which will especially please shorter riders.

On the road, the DR-Z4SM is perfectly balanced and remains controllable even on rough asphalt. On the track, its light weight is particularly advantageous during quick directional changes. It feels lively and agile without becoming twitchy, a clear advantage for both beginners and experienced supermoto riders. Only during hard acceleration or on longer high-speed stretches does the Suzuki become a bit unsettled and lose its planted composure.

The Suzuki DR-Z4SM rides on 17-inch wire-spoke wheels that come factory-fitted with Dunlop Sportmax Q5A tires, complete with tubes. Visually, the metallic blue wheels stand out, and the Dunlops are a sensible choice as sporty all-rounders for both road and occasional track use.

For our direct comparison with the KTM 390 SMC R, we swapped the stock tires for Continental Attack SM 2s. The result: noticeably more hot grip, even more agile handling, and overall a distinctly sportier performance.

The Contis really show their capabilities on the track. Whether with or without tire warmers, the grip is immediately there when needed. Even as the limit approaches, the transition zone is announced early enough. This makes the tires suitable not only for experienced supermoto riders but also for beginners who want to gradually push their personal limits. More information can be found here: ContiAttack SM2 Supermoto Tires.

The Suzuki DR-Z4SM features a 310 mm disc with an axially mounted two-piston caliper at the front, and a 240 mm disc with a single-piston caliper at the rear. The result is solid braking performance that can be pleasantly modulated on the road.

On the track, the brakes also deliver decent performance, although a bit more bite at the front would be welcome. However, the power is more than sufficient for controlled braking, even when leaned over. The ABS operates discreetly and reliably, providing extra safety for less experienced riders. Conveniently, the rear ABS can be deactivated at the push of a button, a plus for experienced supermoto riders who like to work the rear end. A small drawback remains: neither the brake nor the clutch lever offers adjustable reach.

The DR-Z4SM features a 46 mm KYB upside-down fork at the front with 260 mm of travel, which can be adjusted for both rebound and compression. At the rear, a KYB monoshock with a reservoir and a generous 277 mm of travel offers full adjustability. Even in its stock setup, the suspension provides a harmonious setup that can be quickly optimized depending on the area of use.

In everyday use, the Suzuki impresses with a pleasantly comfortable ride: potholes and bumps are smoothly absorbed without the bike losing its composure. On the track, the suspension proves precise and stable, providing good feedback for quick directional changes. The only downside: the fork dives noticeably under hard braking, a point sporty riders might need to mitigate using the adjusters.

The seat comfort is less positive. The bench is straight, flat, and very hard. While ideal for short, intense sessions, it's a torture on longer road trips. The sporty knee angle is perfect for supermoto use but can quickly become tiring during commuting or touring, depending on leg length.

When it comes to electronics, the Suzuki DR-Z4SM shows a purist approach. The installed LCD display appears somewhat dated but provides all relevant information, including gear indicator and fuel level, apart from the tachometer. The readability is acceptable, but in strong sunlight, one might wish for a modern TFT display.

Aside from that, the electronics work reliably and intuitively: ride-by-wire ensures smooth throttle response, the three riding modes (A, B, C) and four traction control levels (2, 1, Off, G=Track) can be easily switched, and the rear ABS can be deactivated. Everything functions as expected, and the safety features don't feel overwhelming.

One negative point stands out: the absence of a quickshifter. This is especially disappointing since the ride-by-wire technology already provides the foundation for it. It's even more frustrating that Suzuki has yet to offer a solution, either as a standard feature or as a retrofit option.