KPMI White Diamond Exhaust Valve - M8 1.264 STD — Harley-Davidson Softail Deluxe, Softail Fat Boy, Softail Fat Boy 114 (2018-2020)

KPMI White Diamond exhaust valve for Harley Milwaukee-Eight (M8) engines, sized to 1.264 in standard specification. Direct replacement valve engineered for M8 performance and reliability.

Features

• 1.264 in standard bore size
• White Diamond construction
• Direct M8 replacement
• 3.5 in length

Specifications

• Brand: KPMI
• Manufacturer Part #: 20-21016H
• Bore Size: 1.264 in
• Length: 3.5 in
• Weight: 0.2 lbs

Fitment

Fits Harley-Davidson Milwaukee-Eight (M8) engines requiring a standard 1.264 in exhaust valve.

Frequently Asked Questions

Will this fit my Twin Cam engine?

No — this valve is engineered specifically for Milwaukee-Eight (M8) engines. Twin Cam owners need a different part number.

What makes the White Diamond construction different?

White Diamond construction is engineered to resist heat and wear in the exhaust valve seat, extending valve life under high-temperature cycling.

Is this a direct bolt-in replacement?

Yes — this is a direct replacement valve for M8 engines. No modifications or adapters required.