REDS 721 PRO-X Factory Team™ 3.5cc (.21) Off Road Nitro Engine w/Pre Break-In by Mario Rossi

Race-Proven Performance for Champions

This is the 721 PRO-X Factory Team™ 3.5cc (.21) Off-Road Nitro Engine from REDS, a cutting-edge powerplant designed to dominate competitive racing. Building upon the success of the limited-edition gold version, this engine combines raw power, fuel efficiency, and exceptional drivability. Developed by Mario Rossi, it features an ultra-tuned crankshaft, an RTX rotating backplate, and a redesigned cooling head for maximum performance. Additionally this version offers a Pre Break-In by the world renowned Mario Rossi providing you with a top tier engine experience. With a track record of wins at major events like the IFMAR Worlds and European Championships, this engine is built for champions.

About the 721 PRO-X Factory Team™

Precision Engineering by Mario Rossi

Every 721 PRO-X Factory Team™ engine benefits from Mario Rossi’s expert tuning, ensuring top-tier performance on the world’s toughest tracks. The ultra-tuned crankshaft and sleeve deliver increased power while maintaining excellent fuel efficiency. The crankshaft is hand-rebalanced to minimize vibration at high speeds, offering a smoother and more stable ride. This meticulous craftsmanship makes the engine a perfect choice for serious racers.

Advanced Cooling and Durability

The updated cooling head design lowers the center of gravity, improving vehicle handling and aerodynamic efficiency. This enhances heat dissipation, keeping the engine running at optimal temperatures even under extreme conditions. Additionally, the engine features high-protection bearings, including a double-seal front bearing for durability and a 9-ball rear ceramic bearing for reliability, ensuring long-lasting performance during intense races.

Optimized for Buggy Racing

Designed specifically for 1/8-scale buggies, the 721 PRO-X Factory Team™ offers a balance of power and control. The extra tuning by Mario Rossi provides linear power delivery, making it easier to handle without sacrificing speed. With exceptional fuel mileage, this engine reduces the number of pit stops, giving racers a competitive edge by maximizing track time and performance.

Features:

• Ultra-tuned crankshaft and sleeve for increased power
• Hand-rebalanced crankshaft for reduced vibration
• RTX rotating backplate for improved efficiency
• Redesigned cooling head for better heat dissipation
• High-durability 9-ball ceramic rear bearing
• Double-seal front bearing for added stability
• Linear power delivery for superior drivability
• Optimized for 1/8 buggy racing
• Exceptional fuel efficiency for longer runtimes
• Proven performance in major championship races