OS Engine 3.5cc Max-B21 + EFRA2089 S28705B Line

Presentation of the OS 3.5cc Max-B21 Engine

The new MAX-B21 motor is designed to replace the MAX-21 XR-B VER.3 and MAX-21 XZ-B VER.2, providing optimal performance for beginners and experienced users alike. Perfect for on -road and off-road racing, this OSSPEED series engine combines speed and power at great value.

Benefits and Uses

• Ease of Use : Ideal for all levels, from beginners to advanced athletes.
• Versatility : Suitable for various racing environments, including track and off-road.
• Durability and Performance : Designed to provide long life and high-level performance.

Characteristics of the OS 3.5cc Max-B21 Engine

• Displacement: 3.49cc
• Bore: 16.27mm
• Stroke: 16.80 mm
• Power: 2.45 HP at 33,000 rpm
• Operating speed: 4,000 – 40,000 rpm
• Weight: 381 gr

Included

• P3 Turbo Spark Plug
• Exhaust seal ring
• Venturi 6 and 7mm
• Dust cap
  
• Exhaust line TB02 EFRA2089 (T-2090SC)+MB01-75