Sport Jett Engines are the highest quality, most precise, and most powerful production sport engines available today. SPORT-JETT engines and the rear exhaust JETT-FIRE engines are tried and true, and the cornerstone of our business. Each precision investment cast crankcase is final machined to demanding tolerances to achieve perfect alignment and fit of all components. Once assembled and tested to Jett's demanding performance criteria, every engine is hand signed and individually numbers by Dub Jett himself. All performance R/C versions come standard with our custom tuned Jett-Stream muffler, Jett Universal Remote Needle Valve and our precision Red-Jett carburetor providing a smooth idle, instant throttle response, and unsurpassed top end power. Free Flight and Control Line versions come with fixed venturi (size and type vary by application). Sport Jett cast case engines are also available in our amazing National Championship winning Q-500 and QM40 pylon versions, as well as the Super Sport .40 club pylon racing engine. No matter what your application, Jett has a Sport Jett or FIRE Jett perfect for your application !  JETT-STREAM Mufflers SPORT-JETT Front Intake Side Exhaust Engines  TURBO-JETT Mufflers   .25 through .40L Racing Engines     .40 through .65L .76 though .90L   Ro-Jett Stunt Engines - click here Pipes and Headers JETT-FIRE Front Intake Rear Exhaust Engines Lite-JETT Mufflers   .25 through .40L FAI Practice     .40 through .60L .76 though .90L   Ro-Jett Stunt Engines - click here