If you ride your Honda CRF450R hard, especially in tough conditions, you might want to consider upgrading your radiator cap.

This is a CV4 high-pressure radiator cap, rated at 2.0 bar.
The stock cap is usually a lower pressure.
By increasing the pressure in the cooling system, you raise the boiling point of your coolant.

That means it's much less likely to boil over when you're lugging the bike up a hill or stuck in slow, hot terrain.

It's a simple, cheap modification that can save you from a hot, steaming bike and potential engine damage.

This cap is designed to fit the Honda CRF450R from 2002 all the way to 2018.
The part number is CV715-31M.

It's a brand new CV4 cap, a respected name in cooling components.

If you want to keep your dirt bike running cool when the going gets tough, swap on this high-pressure cap.
It's a small part that makes a big difference in reliability.