521 gts engine

REDS Racing is excited to introduce a new generation of nitro GT engines called 521 GTS.
REDS is always striving to innovate. This means investment into new core technologies. Drawing from the rich experience gained through competing on the world’s best RC tracks with the best drivers in the world, our goal is to deliver quality products that are built with passion. The new S line does this.

MAIN FEATURES

The new 521 GTS engine features high reliability, tuning stability and great fuel mileage. Combined with specific technical changes in the porting and new materials, this 5 port engine features higher power and better fuel efficiency compared to any other engine.
Reds Racing 521 GTS Horizontal carb 1.jpg

NEW CRANKCASE DESIGN

REDS Racing S line features a new and unique high stiffness crankcase design. It is all new materials and casting technology. The engine is produced with pressure die casting, this is a very high quality process. Previous generation R line crankcase was with gravity casting.

NEW CARB & VENTURI

Another big improvement is the brand new aluminum carburetor made from pressure die casting. We have decided to change carburetor materials from plastic to aluminum to further improve idle stability and tuning. the new carburetor retainer allows better blocking of the carburetor without damaging the plastic bush thus guaranteeing better reliability and less maintenance.

NEW 5 PORTS SLEEVE

New high torque 5 ports sleeve for improved torque and power output. 521 GTS Engine features new 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 M5GT engine with exceptional fuel mileage. We have achieved it.
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HANDMADE, TUNED AND ASSEMBLED

521 GTS is hand-tuned with a silicone-filled, balanced and tuned crankshaft by M. Rossi. Every single engine is hand inspected and compression checked inside REDS Racing headquarters by Mario and Marco Rossi to achieve the highest quality standards. This is core to the values that makes Reds Racing engines different from any other brand on the market.

TECH SPECS

Reds Racing 521 GTS Horizontal carb 2 copia.jpg