The Boyesen Hy-Flo Water Pump Elbow is a performance cooling upgrade designed to improve coolant flow and reduce hot spots. Its redesigned elbow eliminates an angled passage where cavitation and heat can collect—helping your engine run more consistently under load.
The Boyesen Hy-Flo Water Pump Elbow is built to improve cooling efficiency where it matters—right at the water pump outlet. By eliminating an angled coolant passage that can trap heat and promote cavitation, it helps create smoother coolant flow and more stable operating temperatures during hard motos, deep sand, tight trails, or high-load race conditions. The result is a cooling system upgrade that supports consistent performance when your engine is pushed to the limit.
If you’re chasing better temperature control and want to reduce the risk of localized heat buildup, this “trick” coolant elbow is a simple but effective modification used by top-level race teams, including Team Monster Kawasaki and other MX/ATV programs.
