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OS O.S. Max 91Sx-H Ring C-Spec Vipe
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O.S. Max 91Sx-H Ring C-Spec Viper - L-OS19070

Similar to the standard 91SX-H C-Spec but with the added advantage of the stunning new 'Viper' head. Not only does this cylinder head improve power, it also improves cooling and throttle response as well. In some way, this can be attributed to the twin glowplug system.This has the added benefit of giving a little warning of plug failure in flight as one will still keep the engine going, there will just be a little loss of performance to give you the chance to land safely. A great engine for F3C competition.
Bore:27.7mm (1.09")
Displacement:14.95cc (0.91cu in.)
Power Output:3.1PS @ 15,000 rpm
Practical RPM:2,000 - 16,000
Stroke:24.8mm (0.976")
Weight:534.3g (18.84 oz)

Part No: L-OS19070
Item Name: O.S. Max 91Sx-H Ring C-Spec Viper
Brand: OS

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