ALL ORDERS SHIP ANYWHERE IN THE USA IN 1 TO 5 DAYS
Theory Parts
Filters
Theory Elevate Fork - 29" (Black Or Chrome)
The Elevate fork is a 29" fork designed from the beginning for Bikelife. We started with dimensions and geometry that works and combined that with ...
View full detailsTheory Traction Railed Seat (Various Colors)
Soft and wide seat features a grippy cover with a debossed logo. 8mm rails.
Theory Proven Tire - 20x2.40" (Various Colors)
GREAT ALL AROUND TIRE WITH A TREAD PATTERN THAT HAS EXCELLENT GRIP ON STREET, RAMPS, CONCRETE, AND EVERYTHING IN BETWEEN.
Theory Rim Strips
30MM DURABLE RIM STRIPS. SOLD IN PAIRS
Theory Aluminum Axle Nut - 3/8" x 26 (Various Colors)
Aluminum axle nuts with 17mm hex M14x1 or 3/8"x26tpi Sold In Pairs
Theory Conserve 3pc Crank - 138mm Spindle (Various Colors)
3 piece design with 160mm, 165mm, 170mm or 175mm chromoly arms. RH compatibility only. Comes with with 19mm 8 Spline Spindle. Bearings not included...
View full detailsTheory Verify Sprocket - 25T Or 28T (Various Colors)
Simple and effective 6061 Aluminum Sprocket that won't break the bank. 15/16" bore and includes adapters for 19mm and 22mm spindles. 1/8" teeth.
Theory Outside Pedal (Various Colors)
One piece nylon plastic pedal with Chromoly axle 9/16"
Theory Integrated Headset (Various Colors)
Complete Integrated headset kit for frames with an Integrated headtube. Campy Spec 41.8mm X 45 degree Cap height 10mm
Theory Data Flanged Grips (Various Colors)
Soft mushroom style grip with plastic bar end. Flanged grip is 150mm long and flangeless version is 160mm long.
Theory Bypass Bars - Black Or Chrome
Chromoly 2-piece bars with tried and true geometry. 9.75" x 29.5" 2° upsweep 12° backsweep
Theory American Bottom Bracket Cups
American Bottom Bracket full kits in 19mm or 22mmAlso American Cups only
Theory American Bottom Bracket Kits - 22mm
American Bottom Bracket full kits in 19mm or 22mmAlso American Cups only
Theory American Bottom Bracket Kits - 19mm
American Bottom Bracket full kits in 19mm or 22mmAlso American Cups only
Theory Euro Bottom Bracket - 19mm Or 22mm (Black Or Silver)
The Theory Euro BB kit includes 2 threaded aluminum cups with 2 sealed bearings in each cup and internal tube spacer
Theory Median Pedals (Various Colors)
Low profile and wide special thermoplastic body with 8mm removable steel pins and a CNC'd chromoly sealed bearing spindle. Replaceable pins also av...
View full detailsTheory Rattlesnake Freewheel - 16T Or 17T (Various Colors)
With 9 Pawls and 108 points of engagement the Rattlesnake freewheel has super quick engagement and super loud sound. Chromoly with ED finish 3/32" ...
View full detailsTheory Trusty Single Bolt Seat Clamp - 28.6mm (Various Colors)
6061 Aluminum Single Bolt Seat Post Clamps