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PLEASE NOTE: Currently we are open for Telephone and Internet Orders Only

At present some suppliers are closed, and some deliveries may take longer than usual.

Due to the Lockdown we only have 1 member of staff working, but we are here trying our best to serve you.

Telephone Hours will be 10am-2pm, Mon-Fri till further Notice. 


O.S. OS GT120T Twin-Cylinder 120cc Petrol Engine - Special Order [L-OS3AB00]
FREE Delivery on this product!
RRP: £1699
Our Price: 1,490.00 

The O.S. GT120T is a 120cc flat twin petrol engine ideally suited to large aerobatic aircraft where only the best will do. The impressive 10ps (9.86hp) power output is perfect to power a 100" class aerobatic aircraft as used in 3D and IMAC competitions across the world. The crankcase is precision made from aluminium using the latest machining technology OS have on offer. The HS-324A carburettor was designed to produce a special emphasis on throttle response. The GT120T includes a newly designed lightweight ignition unit called the IG-10 to provide a reliable and strong 'spark' with easy start ignition timing and protection against backwards running. To make installation simple the mounting dimensions match most popular existing 120cc twin petrol engines.

This engine is not stocked as standard at our suppliers, it is only available on special order. Please speak to us before ordering.

• CNC aluminium crankcase
• Precision HS-324A carburettor
• Advanced IG-10 ignition unit included
• Perfect for large 100" aerobatic aircraft
• Common mounting dimensions

Carburetor:HS-324A (Inc.)
Spark Plug:CM-6 (Inc.)
Weight:2,450g (86.42oz) Engine & 150g (5.29oz) Ignition
Capacity:119.8cc (
Ignition Type:O.S. IG-10 (Inc.)
Bore:44mm (1.732")
Stroke:39.4mm (1.551")
Power Output:10.0 ps (9.86hp) @ 7,000 rpm
Practical RPM:1,600 - 8,000