Harley Davidson Flh-Flt heat shield engine National cycle n5200Harley Davidson Flh Flt heat shield engine National cycle n5200. Condition is "New". Dark tinted polycarbonate rear cylinder heat shield for twin cam (96 103 110 cubic inch motors) Designed to take the hot air away from the riders leg, Replaces oem plastic one. Made by national cycle in the USA. Now you can replace the OEM black plastic with our new N5200 Heat Shields. Our dark tint polycarbonate lets more of the engine show through without letting