OS FS30 SURPASS w/F-1020 Silencer
Stock Code L-OS33000
The smallest in the O.S. four stroke range and, at only 9.56 oz, it's also the world's lightest production model four stroke.| RRP: £169.99 £160.99 |
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O.S. FS40 Surpass w/FS40S Silencer
Stock Code L-OS35220
The original 6.5cc FS-40 was O.S.'s second production single cylinder four stroke and the first to have the front mounted helical driven camshaft now common to all their single cylinder O.S. four stroke engines.| RRP: £189.99 £179.99 |
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O.S. FSa-56 w/F-4040 Silencer
Stock Code L-OS34300
The new FSa-56 from O.S. is the first engine in a completely new series of advanced four strokes. The FS ‘Alpha’ series draws on the experience gained from the Surpass range to develop and refine standards to a new level!| RRP: £274.99 £259.99 |
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O.S. FS-62V w/F-4050 Silencer
Stock Code L-OS30600
Like the FS-95V, the FS-62V has the same 'classic' overall design that appeals to scale modellers that like their engines to remain in character with the model. The performance, on the other hand, is very much 21st Century and builds on the O.S. tradition of constant technological advancement with each new range| RRP: £229.99 £214.99 |
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O.S. FSa-72 w/F-5030 Silencer
Stock Code L-OS34720
Sharing the same mounting dimensions as the old FL-70 and FS-70U, the new FSa-72 is a simple bolt-in replacement offering compact external dimensions and power/torque to most types of model designed for .46 2 strokes or .70 4 strokes.| RRP: £326.99 £309.99 |
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O.S. FSa-81 w/F-5030 Silencer
Stock Code L-OS34810
The new FSa-81 is a direct replacement for the FS-70 Surpass II, offering greater power and throttle precision in a compact and lightweight design. The crankcase mounting dimensions allow the FSa-81 to slot into the same mount that an FS -70S II would for an instant power upgrade.| RRP: £336.99 £319.99 |
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O.S. FSa-81-P w/F-5030 Silencer
Stock Code L-OS34820
Scale modelers have enthusiastically embraced FS-a engines because they virtually eliminate oil mess while delivering excellent power. Now you can get the 81FS-a equipped with a fuel pump for even more consistent performance.
| RRP: £359.99 £339.99 |
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O.S. FS91 Surpass II w/F-4020 Silencer
Stock Code L-OS35920
Developed from the popular FS 91 Surpass and honed to perfection in this latest model. Like its 52, 70 and 120 stablemates, the new FS 91 Surpass II features a new carburettor,| RRP: £306.99 £289.99 |
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O.S. FS91 Surpass II-P w/F-4020 Silencer
Stock Code L-OS35910
This latest version of the popular FS91 Surpass features a true pressurised fuel system. Similar to the new FS 120S-III the new FS 91-II P has a pump system that is capable of delivering constant fuel via the regulatory carburettor.| RRP: £359.99 £341.99 |
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O.S. FS-95V w/F-5050 Silencer
Stock Code L-OS30900
Stying is deliberately 'retro' and in keeping with the style of the very first OS four strokes. The original FS-120 had twin rocker covers and so do many full size engines in older aircraft. But 'retro' stying does not mean 'retro' technology! The FS-95V is a sophisticated piece of kit| RRP: £279.99 £259.99 |
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O.S. FSa-110 w/F-5040 Silencer
Stock Code L-OS35410
Designed specifically to offer more power and torque compared to a .91 size four stroke, yet still fit in the same mounting dimensions, the FSa-110 is a real compact powerhouse.| RRP: £359.99 £341.99 |
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O.S. FSa-110-P W/F-5040 Silencer
Stock Code L-OS35420
Scale modelers have enthusiastically embraced FS-a engines because they virtually eliminate oil mess while delivering excellent power. Now you can enjoy the added benefit of a fuel pump with this new version of the 110FS-a.
| RRP: £382.99 £354.99 |
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OS FS120 SURPASS E
Stock Code L-OS35530
This is the economy, suction-fed version of the FS120S engine - without a fuel pump or pressure regulated carb but with all the other quality features found in the FS120S series of engines| RRP: £409.99 £384.99 |
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O.S. FS120 Surpass III w/F-5020 Silencer
Stock Code L-OS35540
An updated version of the FS120 MkII now fitted with an integral O.S. Type PG-03 fuel pump and carburettor with built-in fuel regulation to offer the maximum engine reliability - irrespective of the fuel tank's position and model attitude.| RRP: £439.99 £414.99 |
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O.S. FS-200 Surpass w/F-6010 Sil.
Stock Code L-OS35940
The largest, single-cylinder four stroke engine that OS has ever made draws on unrivalled experience in engine design. This powerful, high-torque engine has been created with scale and sports-scale modellers in mind.| RRP: £499.99 £469.99 |
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