2018 Suzuki DR-Z400SM


Suzuki's SuperMoto DR-Z400SM is based on the proven DR-Z400S so it combines Supermotard style and features in a narrow, lightweight street-legal package. This bike brings off-road soul and fun to paved roads. It’s not uncommon to take the SuperMoto down a twisty forest road, around tight canyon corners, or glide through commuter traffic. Its 398cc liquid-cooled, four-stroke engine provides strong low-rpm torque and crisp throttle response for any of these occasions. Key difference between the DR-Z400SM and the DR-Z400S are the inverted front fork, wide, spoke-style wheels, and 300mm diameter floating front brake rotor. The inverted fork contributes to less unsprung weight and improved overall handling, while the large brake and wider rims with high-grip tires offer an exhilarating sportbike experience.

Chassis Features

  • Wide, Gold-anodized RK Excel aluminum rims with stainless steel spokes are fitted with high-grip sportbike radial tires: 120/70-R17 front & 140/70-R17 rear
  • Strong braking performance is supplied by a front disc brake with a large 300 mm floating-type rotor and dual-piston caliper, plus a 240 mm rear disc brake with single-piston caliper
  • Long travel, SHOWA inverted front fork is derived from a RM250 and 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 a tapered RM-inspired aluminum swingarm combine for precise rear wheel control
  • Renthal tapered aluminum handlebar has an aggressive look, reduces vibration and has a great bend for spirited riding
  • Chrome-moly steel frame tuned for Supermoto style riding 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 sub-frame helps reduce weight, simplify maintenance and contributes to the trim rear fender appearance
  • Front and rear axle sliders help protect against damage in the case of a tip-over

Electrical Features

  • Compact digital instrument cluster with speedometer, odometer, and twin-trip meters with addition / subtraction capability, clock and stopwatch functions
  • On-road legal lighting with bright 60 / 55 watt halogen headlight, compact tail / stoplight, lightweight, rubber-mounted turn signals and horn
  • Electrical systems, including the easy push button starter, powered by a compact 6.5 amp maintenance-free battery

Engine Features

  • Lightweight 398 cc, DOHC, liquid-cooled, dry-sump engine produces strong, tractable power
  • Compact 4-valve cylinder head with 36 mm intake valves, 29 mm exhaust valves, narrow 28-degree included valve angle and shim-under-bucket valve adjustment system
  • Simple electric starting via a lightweight starter motor with an automatic mechanical decompression 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 percent lighter than a cast piston and receives additional oil-cooling to the piston crown through a crankcase oil jet
  • Smooth throttle response with a Mikuni™ 36 mm carburetor fed by 6-liter air box. The left side cover has quick-release fasteners for easy access to the air filter
  • Thermostatically controlled cooling fan mounted to the left radiator helps maintain consistent operating temperature in traffic
  • Additional weight savings with magnesium valve cover, clutch cover, and magneto cover

Key Features

  • Suzuki's Supermotard model based on proven DR-Z400S - combines Supermotard style and features in a narrow, lightweight street-legal package
  • Versatile and strong 398 cc, DOHC, liquid-cooled, dry-sump engine with push-button starting
  • Fully adjustable suspension, strong spoke wheels featuring high-grip sportbike tires on wide aluminum rims
  • New black bodywork with fresh yellow and gray graphics complement the motorcycle’s styling. Bright, gold anodized EXCEL wheel rims exude performance

Transmission Features

  • Compact 5-speed transmission utilizes a cable-operated clutch with separate outer cover for simplified clutch maintenance
  • Low-maintenance, long-life sealed O-ring type drive chain produces minimal sounds when riding

General Information

Manufacturer Suzuki
Model Year 2018
Model DR-Z400SM
Model Code DR-Z400SML8
Stock Number Suz101461
Color Solid Black



Front - Disc brake, single floating rotor

Rear - Disc brake, single rotor


Front - 120/70R17 M/C 58H tube type

Rear - 140/70R17 M/C 66H tube type


Length 87.6 in. (2,225 mm)
Height 47.2 in. (1,200 mm)
Width 33.7 in. (855 mm)
Weight Curb - 322 lb. (146 kg)
Ground Clearance 10.2 in. (260 mm)
Wheelbase 57.5 in. (1,460 mm)
Seat Height 35 in. (890 mm)


Transmission 5-speed constant mesh
Final Drive Chain, RK520KZO, 110 links



Headlight - 12V 60/55W (H4)

Tail Light - 12V 21/5W


Engine 4-stroke, 1-cylinder, DOHC
Displacement 398 cc
Bore x Stroke 3.54 x 2.44 in. (90 x 62.6 mm)
Compression Ratio 11.3:1
Carburetion Mikuni BSR36, single carburetor
Fuel Capacity 2.5 gal. (9.5 l)
Ignition Electronic CDI
Clutch Wet multi-plate
Cooling Liquid
Lubrication Semi-dry sump


Starting Electric

Front - Inverted telescopic, coil spring, oil damped

Rear - Link type, coil spring, oil damped, adjustable spring preload


Warranty 12 Month, unlimited mileage, limited warranty. (Longer coverage periods with other benefits available through Suzuki Extended Protection)