Valves

These kits include two exhaust valves and springs.

Kibblewhite Black Diamond valves are CNC machined from one-piece forgings of EV8 stainless steel. The proprietary Black Diamond multi-stage process treats the shaft to a depth of 0.002” creating a hard, smooth and corrosion resistant surface that cannot flake crack or peel off. The valve tips feature welded-on stellite tips for improved resistance to the impact and abrasive wear of the rocker arms. All versions work with modern lead-free fuels.

Top-quality valves to be used as stock replacement for all models from 1929 to present. They feature precise tolerances, hardened heads and stems with roller burnished finish.

Low-priced alternative to the Manley Severe Duty valves. These lightweight valves are a significant upgrade from original equipment and feature stainless steel construction, chrome-plated stems, hard tips, smooth turned underhead angle and radius, forged combustion dish and machined combustion face rim.

High Performance stainless steel valves for all Harleys. They are the standard of the industry since their introduction, designed to outflow and outperform most competitors. These valves feature swirl-polished, performance oriented shapes and durable chrome-plated stems with hardened tips.

Complete valve train packages for one engine that include Manley »Race Master« stainless steel valves, performance double spring assemblies, steel top and lower collars (WW# 60-587: upper collars only) and machined valve keys perfectly matched for maximum performance. The spring assemblies included in these kits require no cylinder head machining for installation.