Theory Headset Spacer Kit (Red)

The Theory Headset Spacer Kit includes 3 aluminum spacers to dial in your cockpit. Each spacer is a different size: 2mm, 5mm, and 10mm.

Theory Verify Sprocket (Red)

The Theory Verify Sprocket is designed for both BMX and Bike Life riding. Made from 6061 aluminum, the Verify Sprocket is bolt-driven with a 15/16″ bore and includes the 19mm and 22mm adapters. Not sure which sprocket will work on your bike?.

Theory Trusty Single Bolt Seat Clamp (Red)

Theory Trusty Single Bolt Seat Clamp Description: The Theory Trusty Single Bolt Seat Clamp is an aluminum clamp available in a wide variety of colors and sizes. With sizes common for freestyle, race, and Bike Life, Theory is for everyone! Specifications: 28.6mm: Fits 25.4mm posts 31.8mm: Fits 27.2mm posts 34.9mm: Fits 31.6-31.8mm posts About Us | View Store

Theory Rattlesnake Freewheel (3/32″) (Red)

The Theory Rattlesnake Freewheel creates that loud buzzing sound that really gets us going! The 3/32″ teeth works with a wide range of chains and is available in 16T and 17T as well as several color options.

Theory Legacy Sprocket (Red)

Not sure which sprocket will work on your bike?. Confused by all the sizing and gear ratios?. Learn all about sprockets and how to install them in ourtech help section here.