+BMX Parts
- NEW ITEMS!
- The DEAL ZONE
- Just Restocked!
- NOS Goodies
- Bar Ends
- Bearings
- Bottom Brackets +
- Brakes +
- Chains +
- Chain Tensioners
- Cranks +
- Forks +
- Freewheels & Drivers +
- Grips +
- Handlebars +
- Headsets +
- Hubs +
- Number Plates & Numbers +
- Pads
- Parts Kits
- Pedals +
- Pegs
- Rims +
- Seats +
- Seatposts +
- Seatpost Clamps
- Spokes & Accessories +
- Sprockets +
- Stems +
- Tires and Tubes +
- Wheels +
- *Repair Necessities
+BMX Riding Gear
Theory
19mm Theory American Bottom Bracket Kit - Silver
$ 34.99
The Theory 19mm American BMX Bottom Bracket Kit includes anodized cups, sealed bearings, cone spacer, bottom bracket spacers, and a tube spacer. This bottom bracket will fit many popular cranks...
Theory 3/8" x 26t Aluminum BMX Axle Nuts - Set of 2 - Gold
$ 13.99
Theory BMX aluminum axle nuts are flanged and designed for use with 3/8" 26tpi axles. A 17mm wrench is required to install (not included). Sold as a pair. Thread Pitch: 3/8" x...
Theory Rattlesnake 17T BMX Freewheel - 108 Engagement Points - 3/32" - Black
$ 59.99
With 9 pawls and 108 points of engagement, the Rattlesnake freewheel has super quick engagement and a super loud sound. This freewheel has 3/32" teeth, so it works with 3/32"...
Theory Rattlesnake 16T BMX Freewheel - 108 Engagement Points - 3/32" - Gold
$ 59.99
With 9 pawls and 108 points of engagement, the Rattlesnake freewheel has super quick engagement and a super loud sound. This freewheel has 3/32" teeth, so it works with 3/32"...
19mm Theory American Bottom Bracket Kit - Gold
$ 34.99
The Theory 19mm American BMX Bottom Bracket Kit includes anodized cups, sealed bearings, cone spacer, bottom bracket spacers, and a tube spacer. This bottom bracket will fit many popular cranks...
Theory 3/8" x 26t Aluminum BMX Axle Nuts - Set of 2 - Red
$ 13.99
Theory BMX aluminum axle nuts are flanged and designed for use with 3/8" 26tpi axles. A 17mm wrench is required to install (not included). Sold as a pair. Thread Pitch: 3/8" x...
Theory 410 BMX Chain - 1/2"x1/8"x100L - Black
$ 7.99
The Theory 410 Chain is a 100-link, 1/2" x 1/8" chain designed for BMX, Fixie, and other single speed bicycles. It comes with a master link for easy installation. Size: 1/2" x...
Theory Rattlesnake 16T BMX Freewheel - 108 Engagement Points - 3/32" - Purple
$ 59.99
With 9 pawls and 108 points of engagement, the Rattlesnake freewheel has super quick engagement and a super loud sound. This freewheel has 3/32" teeth, so it works with 3/32"...
Theory Rattlesnake 16T BMX Freewheel - 108 Engagement Points - 3/32" - Black
$ 59.99
With 9 pawls and 108 points of engagement, the Rattlesnake freewheel has super quick engagement and a super loud sound. This freewheel has 3/32" teeth, so it works with 3/32"...
19mm Theory American Bottom Bracket Kit - Red
$ 34.99
The Theory 19mm American BMX Bottom Bracket Kit includes anodized cups, sealed bearings, cone spacer, bottom bracket spacers, and a tube spacer. This bottom bracket will fit many popular cranks...
19mm Theory American Bottom Bracket Kit - Blue
$ 34.99
The Theory 19mm American BMX Bottom Bracket Kit includes anodized cups, sealed bearings, cone spacer, bottom bracket spacers, and a tube spacer. This bottom bracket will fit many popular cranks...
Theory Rattlesnake 17T BMX Freewheel - 108 Engagement Points - 3/32" - Red
$ 59.99
With 9 pawls and 108 points of engagement, the Rattlesnake freewheel has super quick engagement and a super loud sound. This freewheel has 3/32" teeth, so it works with 3/32"...
Theory Rattlesnake 17T BMX Freewheel - 108 Engagement Points - 3/32" - Gold
$ 59.99
With 9 pawls and 108 points of engagement, the Rattlesnake freewheel has super quick engagement and a super loud sound. This freewheel has 3/32" teeth, so it works with 3/32"...
Theory 22mm American Bottom Bracket Kit - Silver
$ 34.99
The Theory 22mm American BMX Bottom Bracket Kit includes anodized cups, sealed bearings, cone spacer, bottom bracket spacers, and a tube spacer. Color: Silver anodized
Theory Data Grips w/ Bar Ends - Flanged - Yellow
$ 9.99
This BMX grip from Theory Parts is a soft, yet durable, mushroom-style grip with color-matched bar ends. Style: FlangedLength: 150mmColor: Yellow
19mm Theory American Bottom Bracket Kit - Purple
$ 34.99
The Theory 19mm American BMX Bottom Bracket Kit includes anodized cups, sealed bearings, cone spacer, bottom bracket spacers, and a tube spacer. This bottom bracket will fit many popular cranks...
Theory 28t Verify BMX Sprocket / Chainwheel - Blue
$ 19.99
The Theory Verify Sprocket is simple and effective, yet wallet-friendly. Constructed of 6061 aluminum sprocket, it has a 15/16" bore and includes adapters for 19mm and 22mm spindles. This sprocket is compatible...
19mm Theory American Bottom Bracket Kit - Black
$ 34.99
The Theory 19mm American BMX Bottom Bracket Kit includes anodized cups, sealed bearings, cone spacer, bottom bracket spacers, and a tube spacer. This bottom bracket will fit many popular cranks...
Theory 3/8" x 26t Aluminum BMX Axle Nuts - Set of 2 - Purple
$ 13.99
Theory BMX aluminum axle nuts are flanged and designed for use with 3/8" 26tpi axles. A 17mm wrench is required to install (not included). Sold as a pair. Thread Pitch: 3/8" x...
Theory Peg Tape
$ 9.99
Slippin' off those pegs while you're livin' the wheelie bike life? Theory Parts has the solution with pre-cut squares of peg tape that will fit your pegs to add the...