Mishimoto has introduced a carbon fiber radiator cap. This is purely cosmetic and adds to the appearance of your engine bay and or radiator. The radiator cap looks to be made of real carbon fiber from the picture they put up on their site. The radiator cap would have to be purchased separately leaving you with a stock Mishimoto cap with nothing to do. I also just noticed the Mishimoto Radiator Cap looks like a old honda motorcycle design. Think its just like the radiator caps on the 82-83 VF750C V45 MAGNA, 83-84 VF750F V45 INTERCEPTOR or 82-83 VF750S SABRE.. could have been the stock design on other Honda Motorcycles. Im pretty sure its Honda radiator cap part number HONDA PART # 19045-MB0-003 from Denso. Anyways not to get off subject, another nice option from Mishimoto, part number MMRC-CF13S MSRP $40. The radiator cap is 19psi rather then the stockish 16psi cap. This will increase pressure in your radiator system thus lowing the boiling point of the radiator fluid. They didnt mention that in their product description.. not sure if they knew that.

MMRC-CF13SMMRC-CF13S19045-MB0-003