Headset:

The Mach 4, 5 and 429 use a zero stack headset that takes normal cups like an external 1.125 headset, but the entire headset cup fits inside. As forks get longer and tires grow bigger, front end heights continue to skyrocket. This is not such a problem for a 6 foot tall person, but for just about everyone else (particularly the under 5’ 8” crowd), this reduces the front end height by over 1 inch. In addition to the reduced front end height, the big diameter head tube is stronger and allows more surface area to weld to. The cups press in and/or remove just like a traditional headset. The zero stack design is available from Cane Creek, Ritchey, FSA, and a Chris King model is coming soon!