Royal Enfield is preparing for the future of cleaner mobility with the Classic 350 Flex Fuel, a motorcycle designed to run on high-ethanol fuel blends while retaining the iconic styling and relaxed riding experience that the Classic series is known for. The motorcycle was first showcased as a flex-fuel concept and is expected to play an important role as India gradually adopts higher ethanol fuel blends.
Engine and Performance
The Royal Enfield Classic 350 Flex Fuel uses the familiar 349.34cc, single-cylinder, air/oil-cooled J-series engine. The engine is paired with a 5-speed constant mesh gearbox and is engineered to support E85 fuel, a blend containing up to 85% ethanol.
Key Engine Specifications
- Engine: 349.34cc, single-cylinder, air/oil-cooled
- Maximum Power: 20.2 hp (20.21 PS) @ 6,100 rpm
- Peak Torque: 27 Nm @ 4,000 rpm
- Transmission: 5-speed manual
- Fuel Compatibility: Up to E85 ethanol blend
- Fuel Injection: Electronic Fuel Injection (EFI)
Chassis and Suspension
The Flex Fuel version continues to use the same trusted chassis as the standard Classic 350, ensuring familiar ride quality and stability.
- Frame: Twin downtube spine frame
- Front Suspension: 41 mm telescopic forks
- Rear Suspension: Twin shock absorbers with preload adjustment
- Front Brake: 300 mm disc
- Rear Brake: 270 mm disc
- ABS: Dual-channel ABS on higher variants
Dimensions
- Fuel Tank Capacity: 13 litres
- Seat Height: 805 mm
- Ground Clearance: 170 mm
- Kerb Weight: Around 195 kg
- Wheelbase: 1,390 mm
Design Highlights
The Flex Fuel version retains the timeless Classic 350 silhouette but introduces exclusive styling cues.
- Special green and red dual-tone paint scheme
- Unique Flex Fuel graphics
- Retro round headlamp
- Teardrop-shaped fuel tank
- Classic wire-spoke wheels on the concept model
- Semi-digital instrument cluster with Tripper navigation compatibility
Flex Fuel Technology Explained
Unlike a conventional petrol motorcycle, the Classic 350 Flex Fuel is designed to operate on E85 ethanol-blended fuel. The engine management system automatically adjusts fuel delivery based on the ethanol content, allowing the motorcycle to run efficiently on varying fuel blends without manual intervention. This technology can help reduce dependence on fossil fuels and lower emissions.
Expected Launch
Royal Enfield has showcased the motorcycle publicly and testing has continued, indicating that production plans are progressing. While the company has not officially confirmed the launch timeline, recent test sightings suggest the Flex Fuel Classic 350 is moving closer to production.
Conclusion
The Royal Enfield Classic 350 Flex Fuel combines the brand’s signature retro charm with modern alternative-fuel technology. By retaining the proven 349cc J-series engine while adding E85 compatibility, it aims to offer riders a familiar experience with improved environmental credentials. If launched in India, it could become one of the country’s most recognizable flex-fuel motorcycles, appealing to enthusiasts who want classic styling alongside future-ready engineering.