73- mm Bicycle Bottom Brackets
The bottom bracket shell width is the width, in millimeters, of the frame where the bottom bracket is mounted.
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Showing 56 products:
Origin8 Torqlite 73x113 Square Taper English Bottom Bracket
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5 of 5 stars
( 1 review )
BuyPART NUM 127664
Forged alloy body and cups CNC hollow chromoly spindle Sealed cartridge bearings Shimano Equivalent BB-UN55 Alloy … read more
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5 of 5 stars
( 1 review )
In Store
Ships Free15% offretail $53.39 your price $45.39 + ships free
BuyPART NUM 127664 
Praxis Works Shimano Mountain BB30/PF30 Conversion BB 73mm BuyPART NUM 182390
Shimano and SRAM BB30/PF30 conversion bottom brackets Shimano: designed to be a proper bottom bracket for installing Shimano Hollowtech II steel … read more
your price $75.00 + ships free
BuyPART NUM 182390 
Shimano BB-UN300 Bottom Bracket - English, 73 x 113mm Spindle, Square Taper JIS
BuyPART NUM 220473
Shimano BB-UN300 Square Spindle Bottom Brackets Fits JIS square-taper cranksets Crankarm fixing bolts sold separately Hollow spindle … read more
popularyour price $16.99
BuyPART NUM 220473 
Shimano BB-UN300 Bottom Bracket - English, 73 x 122.5mm Spindle, Square Taper JIS BuyPART NUM 840927
Shimano BB-UN300 Square Spindle Bottom Brackets Fits JIS square-taper cranksets Crankarm fixing bolts sold separately Hollow spindle … read more
your price $16.99
BuyPART NUM 840927 
TruVativ PowerSpline Bottom Bracket - English (BSA), 73 x 118mm BuyPART NUM 735121
The SRAM PowerSpline bottom bracket features a proprietary spline design used with many OE spec moderately priced TruVativ cranks. Crank bolts … read more
your price $32.00 + ships free
BuyPART NUM 735121 
Surly OD Enduro Bottom Bracket Regular 73mm
5 of 5
( 3 )
5 of 5 stars average
( 3 reviews )
BuyPART NUM 583689
Compatible with 24mm spindles Item Specifications BB/Frame Interface: English Spindle Interface Type: Surly OD BB Shell Width: 73 Defined … read more
5 of 5
( 3 )
5 of 5 stars average
( 3 reviews )
$60 offretail $130.00 your price $70.00 + ships free
BuyPART NUM 583689 
Sunlite SL26 73x122 Square Taper JIS Bottom Bracket
4 of 5
( 3 )
4 of 5 stars average
( 3 reviews )
BuyPART NUM 842796
Steel body Steel cups Chromoly spindle Sealed bearings SHIMANO Equivalent BB-UN26 Steel 305-320g … read more
4 of 5
( 3 )
4 of 5 stars average
( 3 reviews )
your price $21.99
BuyPART NUM 842796 
Origin8 Torqlite 73x122.5 Square Taper English Bottom Bracket BuyPART NUM 325564
Forged alloy body and cups CNC hollow chromoly spindle Sealed cartridge bearings Shimano Equivalent BB-UN55 Alloy … read more
15% offretail $53.39 your price $45.39 + ships free
BuyPART NUM 325564 
Origin8 Torqlite 73x116 Square Taper JIS Bottom Bracket BuyPART NUM 230518
Forged alloy body and cups CNC hollow chromoly spindle Sealed cartridge bearings SHIMANO Equivalent BB-UN55 Alloy … read more
15% offretail $53.39 your price $45.39 + ships free
BuyPART NUM 230518 
FSA Platinum 73x113mm ISIS Bottom Bracket
4.5 of 5
( 2 )
4.5 of 5 stars average
( 2 reviews )
BuyPART NUM 662553
FSA Platinum ISIS bottom brackets Forged, hollow CroMoly spindle with titanium nitride coating unless noted MegaQuad: 2x double-row, deep-groove … read more
4.5 of 5
( 2 )
4.5 of 5 stars average
( 2 reviews )
your price $66.00 + ships free
BuyPART NUM 662553 
Sunlite SL55 73x122 Square Taper JIS Bottom Bracket BuyPART NUM 480597
Forged steel body Alloy cups Chromoly spindle Sealed bearings SHIMANO Equivalent BB-UN55 Alloy 290-300g … read more
your price $34.39
BuyPART NUM 480597 
Sunlite SL55 73x111 Square Taper JIS Bottom Bracket BuyPART NUM 511045
Forged steel body Alloy cups Chromoly spindle Sealed bearings SHIMANO Equivalent BB-UN55 Alloy 290-300g … read more
your price $34.39
BuyPART NUM 511045 
Sunlite SL26 73x127 Square Taper JIS Bottom Bracket BuyPART NUM 891973
Steel body Steel cups Chromoly spindle Sealed bearings SHIMANO Equivalent BB-UN26 Steel 305-320g … read more
your price $12.98
BuyPART NUM 891973 
RaceFace EXI PF30 Bottom Bracket: 46mm ID x 73mm Shell x 24mm Spindle BuyPART NUM 905287
RaceFace EXI Bottom Brackets are compatible with 24mm spindle cranksets from Race Face, Shimano and FSA. Allows for the use of Race Face, Shimano … read more
your price $59.99 + ships free
BuyPART NUM 905287 
FSA BB-8420ST PowerDrive 73x113 Bottom Bracket BuyPART NUM 151308
Forged hollow SCM4130 chromoly spindle Industrial 600KRS cartridge sealed bearings with oversized diameter 3/16 Cold forged steel … read more
your price $27.00
BuyPART NUM 151308 
SRAM DUB Bottom Bracket - English, 73mm, SRAM DUB Spindle Interface, E-Type, For Superboost +
BuyPART NUM 362557
The SRAM DUB bottom bracket series has a simple job- to connect crankarms and protect the smooth, long-lasting application of power to the drivetrain. … read more
Lowest Priceyour price $43.00 + ships free
BuyPART NUM 362557 
SRAM DUB English Bottom Bracket - English/BSA, 73mm, MTB, Cannondale Ai, Black BuyPART NUM 389442
The SRAM DUB bottom bracket series has a simple job- to connect crankarms and protect the smooth, long-lasting application of power to the drivetrain. … read more
10% offretail $41.00 your price $36.90 + ships free
BuyPART NUM 389442 
Sunlite SL55 73x107 Square Taper JIS Bottom Bracket BuyPART NUM 631989
Forged steel body Alloy cups Chromoly spindle Sealed bearings SHIMANO Equivalent BB-UN55 Alloy 290-300g … read more
your price $34.39
BuyPART NUM 631989 
Truvativ, Power Spline, Splined BB, British, 73mm, Power Spline, 113mm, Silver BuyPART NUM 794242
Heat treated chromoly 12 spline spindle to make sure it can go the distance with even the most demanding riders. SRAM Model ID: BB-PS-A1 … read more
your price $32.00 + ships free
BuyPART NUM 794242 
Sunlite SL55 73x118 Square Taper JIS Bottom Bracket BuyPART NUM 665639
Forged steel body Alloy cups Chromoly spindle Sealed bearings SHIMANO Equivalent BB-UN55 Alloy 290-300g … read more
your price $26.99
BuyPART NUM 665639 
"Shimano practices good local citizenship, pursues continued access to those areas that are enjoyed by outdoor enthusiasts, and is committed to minimizing our impact on the environment."
Surly is a leading manufacturer of bicycle frames, and was one of the first Fat Bike manufacturers.
"Every year bikes change, styles and trends evolve, old bikes are in need of repairs and new bikes are waiting for that personal touch. We provide the means to keep your bike on the road and fun to ride!"
"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."
"Incremental enhancements. Perpetual improvements. Revolutionary Innovation. When advancements are continuously made to every attribute of every component, the result is overall performance that is simply second to none. And to real cycling enthusiasts, there is nothing more gratifying then achieving the ultimate ride. And the best part is we just keep making it better. This is what SRAM is all about."
"Campagnolo puts all of its professionalism and expertise into the manufacture of its components in Via della Chimica plant in Vicenza. All production takes place exclusively within Campagnolo's own plants, so that product development can be a fully integrated part of the process. Every step in the process, from design and engineering to testing and industrialisation, takes place within Campagnolo facilities. Campagnolo even develops its own tools, machinery and technology so that it can produce only the very best components and wheels for racing bicycles."
"Upgrading your hubs, bottom brackets and pulleywheels will give you exactly what you need. CeramicSpeed bearings reduce friction, improve power transfer and have greater longevity."
Learn more about CeramicSpeed
In Store products are available to view in our showroom. In Store orders usually ship the same or next business day.
These models are available for online purchasing and can be shipped directly to you.
Length
The bottom bracket shell width is the width, in millimeters, of the frame where the bottom bracket is mounted.
Bottom brackets must fit the frames interface type. For example, an english threaded bottom bracket can only be installed on a frame that accepts english threading.
Our Lowest Price - This product is ineligible for additional discounts or rebates.
GXP is a SRAM standard. The cranks have a 24mm spindle on the drive side and a 22mm spindle on the non-drive side.
These products are one of our best sellers.
FSA’s MegaExo spindle is 24mm in diameter, uses a “Square Spline”. 
FSA’s MegaExo Light spindle is 24mm in diameter, uses an “Arc Spline,” and is used on K-Force Light, SL-K Light, and the Team Issue cranks.
Shimano Hollowtech II is Shimano's 24mm spindle standard.
RaceFace EXI bottom brackets are for 24mm spindle cranks.
Splined Bottom bracket specific to FSA Power Drive Cranks.
DUB is a SRAM standard, which stands for Durable Unified Bottom bracket. DUB cranks have a 28.99mm spindle.
BB30 / PF30 bottom brackets accept cranks with 30mm spindles and are available in a variety of shell widths.
Some common Octalink V2 cranks models include Deore XT (ES70/71), Deore XL (ES70/71), Deore (ES50/51), FC-M752, FC-M751, FC-M572, FC-M571, FC-M510-8 & FC-M440-8 cranks. 
Praxis M30 crank spindle specific 30mm drive bearing/28mm nondrive bearing. Requires M30 socket tool or M30 wrench for installation and removal.
Buy this product and your entire order ships for free.
Some orders are inelligible for delivery discounts. See offer details for disqualifying products and destinations.