Thunder Tiger new F-91S powerhouse engines is the perfect way to enjoy the advantage of four-stroke performance; the ability to swing a large prop, increase torque, reduce noise and improved fuel economy. Feature with the twin needle updraft carburetor, black anodized cylinder head, oversized valves, combined with a high performance silencer to have the best power-to-weight ratio.

Thunder Tiger new F-54S powerhouse engines is the perfect way to enjoy the advantage of four-stroke performance; the ability to swing a large prop, increase torque, reduce noise and improved fuel economy. Feature with the twin needle updraft carburetor, black anodized cylinder head, oversized valves, combined with a high performance silencer to have the best power-to-weight ratio.

Thunder Tiger Four Stroke series are manufactured by automated computer-controlled machinery, resulting in a product that looks and performs better. Special Camshaft and oversize valves combine to improve performance and ease handling. Precision air bleed carburetor makes adjustments simple, and efficient mufflers keep things quiet at the field. Perfect for the pilot looking for the authentic aircraft sound. Introducing, The New Thunder Tiger's powerhouse F-75s will be the perfect way to enjoy the advantages of four-stroke performance; the ability to swing a larger prop, increase torque, lower noise and improved fuel economy.

This Japanese made long-reach glow plug has been developed exclusively for all Thunder Tiger's as well as other manufacturer's 4-stroke engines. The Redline RF will provide your 4-stroke engine with great performance in its full range of operation, from stable idling to smooth acceleration.

If your engine idle becomes unstable after changing the nitro percentage of your fuel, try the Redline R3. The Japanese made R3 is especially designed for airplane and helicopter engines. It provides great performance in the entire operational range, from stable idling to smooth acceleration. The R3 is a medium length, idle bar-less glow plug featuring a platinum alloy filament. This glow plug has been widely accepted by serious aircraft and helicopter modelers. If you are accustomed to glow plugs such as the O.S.#8 and the Enya#3, you will like the Redline R3.

If you remove the glow starter from your idling engine and notice an immediate drop in PRM, you may need either a hotter glow plug or need a higher nitro percentage fuel. The Japanese made Redline R1 is developed for high-speed low-nitro boat,airplane, and helicopter engines. Why not to try Redline R1 glow plug first before going to use a higher nitro percentage fuel? Due to its long-reach thread design (7/32" / 5.55mm), we do not suggest using the R1 in small-size enignes(.15 or less).

Redline R2 Plus is a stander equipment glow plug that is special designed for the PRO-18 engine installed on the Thunder Tiger RTR car. Compare with the R2 plug, R2 Plus is a colder type plug that will perform well for the "hot" engine.

The Japanese made Redline R5 is special designed for the engine operating under high temperature environment and marked as "cold" version. If you like to run your engine with high nitro content fuel(up 25% nitro) or with high RPM output. Absoulatly, the Redline R5 is the best choose to match your extreme requirement.

The new REDLINE SMOOTHY PIPE(#9725) is special designed to fit with the Thunder Tiger RL-53H helicopter engine. Features enlarged exhaust volume, with smooth airflow to help the engine generate extreme power output and high torque at high RPM. Steady backpressure flow design to make the engine run smoothly under different RPM conditions. Fit with RL-53H engine,#9725 SMOOTHY PIPE will perform with linear response to throttle inputs while providing high power output. Smoothy pipe will be suitable for the F3C pilot.

The new REDLINE HI-FLOW 3D PIPE(#9722) is special designed to fit with the Thunder Tiger RL-53H helicopter engine. Features enlarged exhaust volume, with smooth airflow to help the engine generate extreme power output and high torque at high RPM. Steady backpressure flow design to make the engine run smoothly under different RPM conditions. Fit with RL-53H engine, #9722 HI-FLOW 3D pipe will perform specifically at high RPM/high torque output while under the most demanding flight routines. It will be the best choice for the 3D extreme pilot.

The PRO series helicopter ring-type engines are equipped with dual ball-bearings, Schnuerle porting, one ring-type piston / cylinder assembly and two-needles automatic mixture control carburetor. The PRO-Heli series are manufactured by automated computer-controlled machinery, resulting in a product that looks and performs better. The PRO-90H provides the smooth hovering and on-demand power and acceleration required by FAI pilots as well "hot dog" and "3-D" aerobatic fliers. Precision air bleed carburetor makes adjustments simple, and efficient mufflers keep things quiet at the field.

RED LINE – Extreme Power Model Engine REDLINE is a new engine product line of Thunder Tiger. high performance, extreme power will be the main features of this series engine. With the biggest displacement and awesome power, RL-53H is the best nitro power plant for your 50 class R/C helicopter. The XC2 is extreme composite coating of nano-technology from Japan to make the engine life longer.And the special criss-cross pattern is etched on the sleeve wall to reduce the friction. With these technologies , the RL-53H will produce reliable power and torque even at the high RPM. The all-new designed carb is mounted to the crankcase with a heat insulator to keep the carb working at stable temperature in different conditions.

The Pro-50H and Pro-39H are two of Thunder Tiger's best selling engines because of their excellent performance and great value. The Pro-50H delivers smooth power for sport and 3D fliers. The new carburetor design provides incredibly reliable low idle rpm. The engine can turn at ticking rpm for extended time without flooding like many other engines. Compared to other 50 class engine, the Pro-50H is the most efficient in specific fuel burn, it is not unusual to obtain 10 to 20 percent longer flight time than competing 50 class helicopter engines. The Pro-50H also features very low vibration. This is a perfect motor for any of the Raptor 50 model. The Pro-50H works best in helicopters with gear ratios ranging from 8.5:1 to 9.1:1, and this engine develops peak horsepower at 14,000 to 17,000 rpm

The PRO series helicopter ring-type engines are equipped with dual ball-bearings, Schnuerle porting, one ring-type piston / cylinder assembly and two-needles automatic mixture control carburetor. Thunder Tiger’s .39 helicopter engines provide the smooth power for your demand. Displacement at .394 cubic inches is the largest displacement engine available in the popular 30-size helicopter class, and directly fit in all popular machines. Precision air bleed carburetor makes adjustments simple, and efficient mufflers keep things quiet at the field.

Thunder Tiger's .21 Outboard engine features a fresh, innovative design that is sure to increase the popularity of the 3.5cc Tunnel Hull class. A race-proven Pro.21 M-R power head is mated to a lower unit that utilizes the best aspects of gear and flex-cable drive technology. A special set of precision helical gears transfers power from the crankshaft to the flex-cable, resulting in substantially reduced cable wear and maintenance, while the integrated expansion chamber/muffler reduces exhaust noise. The engine mount allows adjustment to both propeller depth and angle, and a Prather S215 prop. is also included.