Theory

The Theory Adirondack Bars are a great addition to the bike life scene. The multi butted and heat treated for superior strength. 8.25" x 33.5" We...

The Theory American Bottom Bracket Kit includes two color matched american bottom bracket cups, matching colored cone spacers, two precision sealed...

The Theory Conserve Cranks are traditional 3 piece style made from a durable chromoly. The Conserve cranks use a 19mm 8 spline spindle. Great produ...

The Theory Data Grip feature a classic mushroom style design for comfort and durability. 155mm in length to accommodate today's super wide bars.

The Theory Median Pedals are a combination of thermoplastic bodies with removable steel pins. The removable pins are perfect for utilizing one side...

The Theory Method Tires are a great addition to the big BMX game with its refined design that offers a fast and grippy tire that wont break the bank.

How are we going to see that work if your slippin' off the pegs? Don't worry Theory has you covered with pre-cut hassle free installation grip for ...

30mm wide Sold in pairs

Theory Spindle Bolts are direct replacement to Theory's Converse cranks. Conveniently replace just the spindle bolts as opposed to buying a spindle...

The Theory Traction Railed Seat is a good mix of comfort and ergonomics. Built on a wider base with plush foam an wrapped with a grippy, durable ca...

Theory Trusty Seat Clamp 6061 aluminum single bolt Colors Holds your seat straight

The Theory Uptown Railed Seatpost is a sturdy aluminum post that uses a traditional micro adjust system. Tons of adjustment with this post allows y...

Theory X Bombsquad Railed Seat  Bombsquad collab Durable canvas wrap Chromo rails Reflective Theory logo