REDS 521 GTS Pro Tuned Gen3 3.5cc (.21) On Road Nitro Engine

Pro-Tuned Power for On-Road Racing Excellence

This is the 521 GTS Pro Tuned Gen3 3.5cc (.21) On-Road Nitro Engine from REDS, a high-performance engine designed for serious racers who demand power, efficiency, and durability. Pro-tuned by Mario Rossi, this engine is built for maximum throttle response, acceleration, and reliability in the most demanding on-road conditions. Featuring a reinforced steel crankshaft, advanced cooling system, and precision-machined internals, the 521 GTS Pro Tuned Gen3 delivers consistent power and smooth handling, making it the ultimate choice for competitive 1/8 on-road racing.

About the 521 GTS Pro Tuned

Precision-Tuned for Maximum Performance

The 521 GTS Pro Tuned Gen3 is meticulously crafted to provide superior durability and race-ready power. Its high-strength steel crankshaft minimizes wear and enhances longevity, while the optimized porting and fuel efficiency ensure extended run times without sacrificing performance. Equipped with performance ball bearings and an advanced cooling system, this engine is designed to withstand intense racing conditions, maintaining stability and responsiveness even in high-temperature environments.

Features:

• 3.5cc (.21) displacement for high-performance on-road racing
• Pro-tuned by Mario Rossi for peak competition-level performance
• High-strength steel crankshaft for superior durability
• Optimized porting design for smooth acceleration and throttle response
• Advanced cooling system for consistent performance in extreme conditions
• High fuel efficiency for longer run times
• Precision-machined internals for maximum reliability
• Performance ball bearings for reduced friction and improved efficiency
• Designed for 1/8 on-road racing applications

Includes:

• (1) 521 GTS Pro Tuned Gen3 3.5cc (.21) On Road Nitro Engine

Specifications:

This product was added to our catalog on March 3, 2025