O.S. MAX-R21 V2 3.5cc (.21) On Road Engine Combo w/TR02 Tuned Pipe

Reliable 1/8 On-Road Racing Dominance

The MAX-R21 V2 On Road Engine Combo from O.S. is designed to deliver reliable performance for 1/8 scale on-road racing. Built with a focus on ease of use and cost performance, it is ideal for both entry-level and sports class racers. Updated internal components provide improved drivability and smoother tuning characteristics.

About the MAX-R21 V2

Improved Internal Components

The MAX-R21 V2 features a revised crankshaft and updated carburetor, enhancing throttle response and overall control. These improvements make the engine easier to tune and more consistent during operation. Drivers can expect smoother acceleration and more predictable performance across different track conditions.

Race-Ready Performance

Engineered specifically for 1/8 on-road applications, this engine delivers a balanced combination of power and efficiency. Its performance characteristics are well-suited for competitive racing while remaining manageable for entry level drivers. This makes it a versatile option for a wide range of skill levels.

Distinctive Max Series Design

The blue outer cooling head represents the signature look of the Max series while providing effective heat dissipation. A laser-etched design adds a premium visual touch to the engine. This combination of form and function ensures both performance and standout appearance on the track.

Features:

• Designed for 1/8 on-road racing
• Revised crankshaft design
• Updated carburetor system
• Smooth throttle response
• Easy tuning characteristics
• Strong and consistent power
• Excellent cost performance
• Blue cooling head design
• Laser etched detailing
• Suitable for entry to sports level users