These exhausts for the airworld Turbo Raven are tailormade to fit the SPT5 or engines with 55 mm exhaust stacks. If you use the KT55TP, or a KT-60, please leave a message in the comment field- these exhausts need slightly different extensions! The asymmetrical mount of the engine is considered in the construction of our exhausts, that come with fixing screws and safety wire.
