Traxxas Top Fuel™ is now available with 33% nitro. With 10% more nitro than standard 30% racing fuels, Top Fuel 33% delivers even more power and acceleration from just about any nitro engine. It works especially well in TRX 2.5 and TRX 2.5R racing engines. That extra 10% gives you the edge in extracting maximum performance from your engine. Some 30% racing fuels make you sacrifice lubrication and engine life in order to enjoy the benefits of higher nitro. Traxxas fuel gives you the same great protection and engine life you expect with all the performance benefits high nitro racing fuel has to offer.