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CV4 Radiator Caps
    Availability Guide: If you order an item that is on backorder, we will not charge your card until the order is ready to ship.
     = Normally ships the same business day     = Ships in 1 to 2 business days     = On backorder from the manufacturer
  CV4 Radiator Caps Cost  Add To Cart 
High Pressure Radiator Cap - 30psi
Fits KTM/Husaberg/Husqvarna offroad bikes


High Pressure Radiator Cap - 30psi
Fits Japanese offroad bikes


High Pressure Radiator Cap - 20psi
Fits Japanese offroad bikes
KTM 1.8 Bar Radiator Cap
(Factory KTM / Husqvarna / Husaberg) Help prevent radiator boil-over by upgrading your stock 1.4 bar cap to this higher pressure cap.
Go to KTM Radiator Caps

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CV4 High-Pressure Radiator Cap CV-30capKTM - The CV4's radiator cap increases the boiling point of the water in your bike's radiator by increasing the amount of pressure. A motorcycle's radiator cap is similar to the safety valve on a chef's pressure cooker. Since the boiling point of water increases when the water is placed under pressure, this radiator cap has a coil spring between two rubber seals. As the water heats up, it expands and puts pressure on the radiator caps' spring. When the radiator's internal pressure exceeds the spring rate of the cap, the hot coolant escapes and overflows between the two rubber seals.