YFZ450Rs are known for blowing oil under high RPMs, don’t let it cost you a rebuild. DBR’s breather box is designed to return excess oil back to the bottom end while maintaining proper crankcase ventilation. Each kit comes complete with pre-cut hoses and clamps for an easy install. Constructed from stainless steel and finished in a sleek black powder coat, it’s built to perform and look sharp doing it.
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