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Theory Parts
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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 1 1/8" Internal (Semi-Integrated) Headset (Various Colors)
1-1/8" Internal HeadsetsØ28.6 * 44 * 30Height: 15.4+ 3= 18.4mmBearings: Cartridge ball bearings41 * 7.7 * 45° (R431)Material: AL6061 w/ steel crown...
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 Predict Front Wheel (Various Colors)
36 HOLE COMPLETE FRONT WHEEL WITH A WIDE 36MM DOUBLE WALL RIM PAIRED A LOW FLANGED HUB WITH A FEMALE AXLE WITH 3/8" BOLTS AND 2 SEALED BEARINGS.
Theory Predict Cassette Wheel - RHD (Various Colors)
36 HOLE COMPLETE REAR WHEEL WITH A WIDE 36MM DOUBLE WALL RIM PAIRED A 9T CASSETTE WITH A 14MM AXLE AND 5 SEALED BEARINGS. THE DRIVER HAS 3 SETS OF ...
View full detailsTheory 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 410 Chain - Black
THE CLASSIC 410 CHAIN HAS EVERYTHING YOU NEED IN A BASIC CHAIN, 1/2"x1/8" - 100 LINKS
Theory 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 Data Flangeless 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 Aluminum Axle Nut - M14x1 (Various Colors)
Aluminum axle nuts with 17mm hex M14x1 or 3/8"x26tpi Sold In Pairs
Theory 1 1/8" Threadless Cup Headset
1 1/8" Standard cup headset. Works with non integrated 1 1/8" headtube frames.
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 Bond Top Load Stem
The Theory Bond stem features a cold forged 6061 aluminum cap and body with a 50mm reach and optimized cutouts to reduce weight.
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...
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