Suzuki DR-Z400S & SM DR-Z400 common specs for Dual Sport and SuperMoto versions.

• Stock Tire Sizing for Dual Sport are 120/80-18 rear and 80/100-21 front. Alternatives are 130/90 or 130/80 for the rear and 90/90 for the front. Stock tires for the SM model are 140/70-17 rear and 120/70-17 front. However, many riders use a 150 or 130 tire for the rear.
• Chain & Sprocket stock gearing is 15 front 44 rear for the S model and 15 front 41 rear for SM models. Chain size 520 with 110 links.
• Recommended oil 10W40. Capacity 1.8 liters (1.9 US qt) with filter change, 1.7 liters (1.8 US qt) without.