The Jawa 350 Type 640 series marked the end of the iconic Jawa two-stroke legacy before the transition to modern four-stroke engines. Introduced in the early 1990s, the 640 was designed to comply with newer regulations while maintaining the spirit of Jawa motorcycles—simplicity, ruggedness, and reliability. This model is still in limited production today for specific markets such as Cuba, Russia, and Latin America, making it one of the longest-lived two-stroke motorcycles in the world.
Technical Specifications
- Engine: 343.5 cc, twin-cylinder, air-cooled, two-stroke
- Power Output: Approx. 26 hp (19.5 kW) @ 5250 rpm
- Torque: 32 Nm @ 4750 rpm
- Carburetor: Jikov 2926 SB (varied by market)
- Transmission: 4-speed manual
- Ignition: Electronic
- Lubrication: Mostly premix (some export versions had Oilmaster)
- Top Speed: ~125–135 km/h
- Brakes: Front disc / rear drum
- Fuel Tank Capacity: ~17 liters
- Weight: ~160 kg
Design & Mechanical Updates
Compared to its predecessor (Type 639), the 640 featured multiple practical and cosmetic updates:
- New Frame Design: Stronger chassis derived from previous models but reinforced for better durability and handling.
- Redesigned Fuel Tank: Larger, sleeker, and better integrated with the side panels and seat.
- New Suspension: Improved ČZ front telescopic fork with rubber gaiters; better rear shocks.
- Updated Instrument Console: Twin-pod analog cluster with cleaner layout.
- Electricals: 12V system, alternator-based with improved lighting and indicators.
Styling Variants
The Type 640 series included several model variants to cater to different markets:
- Jawa 640 Classic – Retained traditional styling with rounded headlamp and chrome elements.
- Jawa 640 Style / Sport – More modern touches like blacked-out exhausts, sportier seats, and compact side panels.
- Jawa 640 Chopper – Rare, cruiser-inspired variant with extended forks and custom-styled tank (limited release).
- Military Spec (For Cuba/Russia) – Rugged finish, rear luggage racks, and utility modifications.
Performance & Usability
Jawa 640 models were appreciated for:
Pros:
- Classic two-stroke torque and sound
- Simple mechanics and easy to repair
- Rugged for poor roads and long-distance travel
- Affordable running costs
- Legendary durability in harsh climates (Cuba, Eastern Europe)
Cons:
- Outdated emissions (does not meet Euro standards without modification)
- Vibrations at higher RPMs
- Still used