OS SPEED R2106 (EFRA 2196 / MR05) – 1/8 On-Road Nitro Engine

The OS SPEED R2106 engine is specifically designed for 1/8 scale on-road racing. It features a 9-port liner, which improves airflow and mid-range torque. Its crankshaft is based on the Euro II model, ensuring excellent low-end feel, while the ceramic rear bearing provides improved responsiveness and reduced friction.

The connecting rod has been reinforced to withstand the stresses of racing, and the carburetor is based on the 21M series while offering greater ease of adjustment. This engine is designed to deliver power and durability, with a power band suitable for demanding competitions.

Technical specifications:

• Engine displacement: 3.49 cm³

• Bore / Stroke: 16.08 mm / 17.20 mm

• Power: ~2.80 hp at 35,000 rpm

• Operating range: 4,000 to ~45,000 rpm

• Weight: ~345 g

Key features:

• Ideal for on-road use with a good balance of torque and RPM.

• Euro II crankshaft + ceramic bearing for long service life

• Reinforced connecting rod

• Easy-to-adjust carburetor with a wide tuning range