FLO Headworks: 
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your Harley-Davidson® Motorcycles

 

 

 

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Twin Cam and Evo Big Twin

Our valves are manufactured in-house from 21-4N stainless steel with polished tuliped heads. The backside is machined with a .750" radius to increase the flow characteristics and nitrided along with the stem to minimize wear. The valve seating area measures .060" wide on the exhaust valves and .045" wide on the intake valves. The head diameter has been increased by 20 percent to 1.687" on the exhaust and 1.937" on the intake. Valve stem clearance is fit to .001" on the intake and .002" on the exhaust.

Evolution Sportster and Buell

Our valves are manufactured in-house from 21-4N stainless steel with polished tuliped heads. The backside is machined with a .750" radius to increase the flow characteristics and nitrided along with the stem to minimize wear. The valve seating area measures .060" wide on the exhaust valves and .045" wide on the intake valves. The head diameter has been increased to 1.562" on the exhaust and 1.812" on the intake.

Shovelhead, Panhead, Knucklehead, Ironhead Sportster

Our new High Flow valves are the highest quality ever developed for HD. The intake is made of solid Tool Steel tested at "68" Rockwell with polished head and nitrided stem. 

The exhaust is made of Stainless Tool Steel with polished head and nitrided stem, resisting distortion and wear at temperatures in excess of 2200 degrees. These valves are guaranteed for the life of your engine.

Knuckle and Panheads are updated to accommodate 1.937" intake valves. Iron Sportster updated to 1.750" exhaust valves. The valves are hand lapped to the seat for a positive seal.

Call (805)481-6300 for detailed price list.

Click to hear Perry talk about his hand-build valves, good things to know about if your original valves are victims of detonation. 

(This is a big file, 320KB, so if it runs slow rough the first time you load it, wait a few moments and try again.)

Twin Cam, Evo Big Twin, Sportster, Buell

Shovelhead, Panhead, Knucklehead

Ironhead Sportster

Related Articles

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Porting the Evo Big Twin

Porting the Sportster 1200 / Buell

Tooled Finish

Fun to Ride Guide

 

2000-2014, FLO Headworks. Contact Perry Kime at 805-481-6300 or via e-mail.
FLO Headworks, 1150 Pike Lane, #2, Oceano, CA, 93445.
All rights reserved. All prices subject to change without notice.
FLOHEADWORKS.COM and Perry Kime have no affiliation with Harley-Davidson® Motor Company. Trademarks and model names are the property of the trademark holders.