W's Specific low profile fit doesn't look like a spaceship landed on your head!
Adjustable fit system at back of head
Zipmold foam compatible to upgrade a winter liner (sold separately) for winter sports
Fits Heads 57-59 cm in circumference.
Thoroughly revised and updated, this edition provides accurate technical guidance to understanding and building all popular Ford performance engines. This outstanding reference covers the venerable Ford small block and big block engines. Filled with more than 300 photos and hundreds of technical secrets developed by top racers and engine builders. Includes all modern Ford performance engines.