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: An air-cooled bicycle engine conveyances power to the air through the strategy for compelled convection tofacilitate this, cutting edges are given on the outside surface of the chamber. The force move rate depends on the speed of thevehicle, sharp edge computation and the encompassing temperature. Insufficient removal of power from engine will provoke high thermalstresses and lower engine efficiency. The cooling edges license the breeze to move the force away from the engine. Low rate ofheat travel through cutting edges is the chief issue of air cooling structure. An undertaking is made to repeat the power move usingCFD for different shape and computation of Fins to separate effects on speed of force dispersal from sharp edges surfaces. The heattransfer surfaces are shown in CATIA and mirrored in FLUENT programming. The principal of point of this work is to studydifferentshapesandgeometryoffinstoimproveheattransferratebychangingfingeometryunderdifferentvelocity