Radios

The OS GT33 Gasoline Aircraft Engine is designed for experienced modelers with its broad power characteristics suitable for sport as well as acro flights. 

Enjoy Huge Power and Performance with the Compact 105HZ-R!
The OS Max 105HZ-R is the engine that precision aerobatic and 3D heli pilots have been waiting for! In order for 90-sized machines to nail huge maneuvers and hardcore, smackdown-style 3D it's all about power, and 105HZ-R have it in abundance. Displacement has been increased by 15%, while a huge venturi rams air into the carburetor, producing massive power. Plus, they fit in a .90-sized mounting pattern. 

OS GT 15HZ's power is perfect for sport, 3D and scale pilots alike. But that’s only a part of what makes the GT15 super.

It also offers superb fuel economy, a pumped carb to deliver fuel dependably, the ease of the IG-05 Ignition module
and smooth running without constant adjustments. And since it’s about the same size as most .90 glow engines,
it’s an easy retrofit, too.

The high performance OS Speed 21XZ-B Spec II Engine now comes in a black anodized crankcase. It features DLC coated crankshaft with silicone filled intake passage for improved fuel flow. Its has a newly designed slide valve carburetor with three carb reducers that restrict airflow helping to increase the amount of torque produced. 

OS RP8 is a cold Glow Plug  that will outlast the hottest heats with turbo head engines. It is designed for engines such as OS Max .21 VZ-B V-Spec and most other .18 -.28 cu in (2.9-4.6cc) turbo head racing engines. 

The OS T-2080C Tuned Silencer Complete Set for the OS 21XZ and 21VG engines designed for 1/8 RC on road or car racing. 

OS Max 21XR-B is a 1/8 off-road engine with smooth acceleration and easy handling. The newly developed carburetor has polished up easiness of adjustment, that is distinctive characteristics of OS engines. 

The OS Sirius (FR5-300) is a five-cylinder radial overhead-valve four-stroke engine of 49.75cc (3.04cu.in) total displacement. The FR5-300 has been designed to meet the requirements of those whose interests lie in the field of very large radio-controlled aircrafts.  

This Cool Power OS OCA-1100HV ESC is designed to bring out the potential of OS high performance brushless motors with its Opto System programming features. The OCA-1100HV is installed with the latest power FET for brushless motors. Recommended for OS Brushless Motors OMA-5020-490 and OMA-5025-375. 

OS Speed Tuned Silencer Complete Set T-2060SC (WNI) is the optional O.S. Max T-2060 WN Speed Tuned Pipe Set for the following OS engines: Max-21XZ-B, Speed-21XZ-B, Max-21VZ-B, Speed-21VZ-B, Max-21VG, Max-25XZ, Max-28XZ and Max-30VG

The OS Speed 12XZ Spec III is a high performance engine meeting IFMAR specifications produced by OS Speed Team technicians. Major parts such as cylinder and piston assembly, crankshaft and crankcase have been refined to a powerful potential equal to more expensive specially tuned or modified engines. Also, it employs an outer head that has many drilled holes for lighter weight and better cooling, and a ceramic rear ball bearing for lower friction.  

This OS Powerboost Pipe is designed for GT15HZ two stroke gasoline engine for helicopter. It helps stabilize power of the GT15HZ in achieving its best performance.  

Latest!
The OS OMH Series high performance brushless motors are long-awaited as a power source for electric helicopters. With quality and reliability of OS, the OS OMH-4535-560 Motor is released to cater to 600 class helicopters. Pilots can now enjoy clean and quiet power for their models with this highly efficient (85% to 90%) motor. It also features reduced internal resistance and minimized heat generation. 

Latest!
The OS OMH Series high performance brushless motors are long-awaited as a power source for electric helicopters. With quality and reliability of OS, the OS OMH-4535-1260 Motor is released to cater to 520-600 class helicopters. Pilots can now enjoy clean and quiet power for their models with this highly efficient (>85%) motor. It also features reduced internal resistance and minimized heat generation.

The OS T-1070SC L52 silencer is tuned to match the OS 12XZ Speed Spec III engine. Package includes tuned pipe with header. 

OS GT 15HZ's power is perfect for sport, 3D and scale pilots alike. But that’s only a part of what makes the GT15 super.

It also offers superb fuel economy, a pumped carb to deliver fuel dependably, the ease of the IG-05 Ignition module
and smooth running without constant adjustments. And since it’s about the same size as most .90 glow engines,
it’s an easy retrofit, too.

With the existing OS GT Series engines including GT55, GT33 and GT22,  a new larger size GT-60 is added to the line-up for aerobatic as well as big scale models. It features liner-less cylinder integrated with the cylinder head is employed for the first time at OS and a new OS ignition IG-02. This contributes to better cooling and light weight. It employs a reed valve/rear carburetor which has high performance that was proven in the GT33 and GT22. An efficient Pitts style E-6020 silencer is also included.

The OS Max 21XZ-B Engine is a high performance 3.5cc class power unit for one-eight-scale radio-controlled 'off-road' or buggy cars.
It has been expressly designed for racing competitions.

The OS Max-21XM Ver.II Marine Engine is a high-performance air-cooled outboard marine engine for small and medium-size radio controlled outboard boats.

OS GT55 Gasoline Engine is similar in appearance to other O.S. 2-cycle engines, with a large number of extra-deep and -thin cooling fins on the crankcase and head. A unique 1-piece crankcase design eliminates gaskets and enhances strength and precision.