REDS 721 Scuderia S Series .21 Off-Road Competition Buggy Engine Combo w/2143 X-ONE Torque Tuned Pipe

The REDS Racing 721 Scuderia S Series .21 Off-Road Competition Buggy Engine is a 7 port 3.5cc off-road engine developed for pure competition. This combo includes a REDS 2143 X-ONE Torque tuned exhaust system. 

Why another line of buggy engines?

• Crankcase design: REDS Racing S line features a unique high stiffness crankcase design with unique materials and casting technology. The engine is produced with pressure die casting, this is a very high quality process. Previous generation R line crankcase used gravity casting. 
• Carburetor and venturi: Another big improvement is the aluminum carburetor made from pressure die casting. REDS have decided to change carburetor materials from plastic to aluminum to further improve idle stability and tuning. On a technical note, the carburetor is 30° inclined for better fluid dynamics to increase engine power. Finally, the carburetor has an insulator to reduce carburetor temperature and increase idle stability at high temperatures.
• Clamping System: The carburetor retainer allows better blocking of the carburetor without damaging the plastic bush thus guaranteeing better reliability and less maintenance.
• Materials: 721 Scuderia features updated materials for piston, sleeve and crankcase in order to optimize thermal expansion and improve power. The idea was to develop a high power engine even more powerful than WRX and WR7 engines with exceptional fuel mileage. REDS has achieved it.
• 7 Port Sleeve: Redesigned high torque 7 port sleeve for improved torque and power output.
• Exhaust: Manifolds and X-One Pipes have been developed specifically for the S line.