The Standard Integrated is generally for pro sized frames that have a 1-1/8" head tube. 

The Tapered Integrated is for a lot of the newer, higher-end pro sized frames that utilize a head-tube design that has a 1-1/8" top bearing and a 1.5" lower bearing. 

Standard:

• 8mm & 18mm carbon fiber top cover options available
• two 1-1/8" sealed bearings
• 1-1/8" bearing race & hardware
• 72mm expander plug
• Avian laser logo top cap & screw

Tapered:

• 8mm & 18mm carbon fiber top cover options available
• one 1-1/8" sealed bearing
• one 1.5" sealed bearing
• 72mm expander plug
• one 1-1/8" lower bearing race
• one 1.5" lower bearing race
• Avian laser logo top cap & screw

The Standard & Tapered headsets are available in two top cover options, 8mm and 18mm. Some riders like a low front-end and others like higher front ends, this option helps you adjust without the use of tacky looking spacers. All of our headsets come with split bearing races for easy slip on installation. 

Expander Plug Disclaimer: The Expander Plug included with our 1-1/8" Standard & Tapered headsets is intended for use with 1-1/8" fork steerer tubes with a 23.2 Inner Diameter. That means if your fork has a steerer tube thicker than 2.7mm, our expander plug won't fit inside it. Fork manufacturers that use thicker steerer tubes than 2.7mm should require a stem lock design, or some other type of internal locking included with their fork.