2.1 bar (30 psi) radiator cap.

• Upgrading to a high pressure 1.6 bar, 1.8 bar or 2.1 bar from the stock radiator cap is the simplest and least expensive way to avoid over-boiling your engine
• Raising your cooling system’s maximum operating pressure increases your coolant’s boiling point, allowing you to ride harder and longer
• High-temperature, corrosion-resistant silicone seals
• Universal fit for most Japanese models