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Bottom Bracket Parts from Harris Cyclery

Axles	Bearing Balls	Bolts	Cotters	One Piece/USA	French	ISIS	Italian	Liners
Phil Wood	Raleigh	Shimano Square   |   Octalink   |   Hollowtech			Sizes Dimensions	Stronglight	Sugino	Swiss

Bottom Brackets

Not sure what size you need? Click here!

 

Phil Wood Bottom Brackets

The ne plus ultra of sealed cartridge bottom brackets!

Consist of a cartridge and 2 mounting rings.

What makes Phil Wood Bottom Brackets so great?

• 17 mm Proprietary Heat-Treated Stainless Steel spindle for maximum durability & minimum flex
• Provided with Phil sealed cartridge bearings in models for both 68 and 73 mm BB shells
• Unique cupped flats for crank arm retention with a shell designed to seal out contamination
• Wide bearing separation provides maximum spindle rigidity with cups providing 5 mm of added adjustment
• A bazillion different lengths and offsets to match virtually any frame and crankset combination. Plus the ability to shift the bottom bracket left or right by up to 5 mm, allowing optimum chainlines.

• Basic Phil Wood information
• All cartridges are compatible with all cups and tools.
• All Phil Wood BB cups require use of the Phil Wood BB cup installation tool.
• The British and Italian anodized alloy cups are compatible with aluminum and titanium BB shells.
• 68 mm Cartridges will have approximately 2.5 mm of the rings extending from both sides of a 68 mm shell. The 68 mm cartridge in a 73 mm shell will allow the rings to be flush with the shell. Because of this, we stock the 68 mm cartridges in many sizes. We don't stock the 73 mm cartridges, but can get them in 2 to 3 weeks time.
• Phil Wood cups should be installed with supplied thread locking compound or Blue Loctite 242 when used in steel, aluminum, and titanium bottom bracket shells

Standard Phil Wood Bottom Brackets

Alloy Housing - Stainless Steel Spindle
Part #	Description	Length	Std Offset	Weight	Price
BRS02	68 mm - Campagnolo Specific	102mm	Symmetrical	197 gm	$109.95
BRS03	68 mm - Short Taper	103 mm	Symmetrical	197 gm	$109.95
BRS05	68 mm - Short Taper	105 mm	Symmetrical	197 gm	$109.95
BRSC8	68 mm - Short Taper (Sugino 75)	108 mm	Symmetrical	197 gm	$109.95
BRS08	68 mm	108 mm	Symmetrical	197 gm	$109.95
BRS10	68 mm - Campagnolo Specific	110.5 mm	Symmetrical	197 gm	$109.95
BRS10R	68 mm - Campagnolo Specific (Record Triple)	110.5 mm	Right+2	197 gm	$109.95
BRS11	68 mm	111mm	Symmetrical	197 gm	$109.95
BRS13	68 mm	113 mm	Symmetrical	215 gm	$109.95
BRS13R	68 mm	113 mm	Right+5	215 gm	$109.95
BRS15	68 mm - Campagnolo Specific	115 mm	Symmetrical	215 gm	$109.95
BRS15R	68 mm - Campagnolo Specific	115 mm	Right+5	215 gm	$109.95
BRS16	68 mm	116 mm	Right+5	215 gm	$109.95
BRS16S	68 mm	116 mm	Symmetrical	215 gm	$109.95
BRS19	68 mm	119 mm	Right+4	226 gm	$109.95
BRS19S	68 mm	119 mm	Symmetrical	226 gm	$109.95
BRS23	68 mm	123 mm	Right+5	226 gm	$109.95
BRS23S	68 mm	123 mm	Symmetrical	226 gm	$109.95
BRS25	68 mm	125 mm	Right+5	226 gm	$127.00
BRS25S	68 mm	125 mm	Symmetrical	226 gm	$127.00
BRS27	68 mm	127.5 mm	Right+5	226 gm	$127.00
BRS30S	68 mm	130 mm	Symmetrical	226 gm	$127.00
BRS30	68 mm	130 mm	Right+5	226 gm	$127.00
BRS35	68 mm	135 mm	Symmetrical	226 gm	$127.00

Phil cartridges can also be had with the same housings and titanium spindles. These are available upto 123 mm length by special order. They are approximately 60 gm lighter than the stainless ones above. Call us for pricing and availability info.

The Magnium - Titanium versions of Phil bottom brackets are also available by special order. The housing is Magnesium/Aluminum/Titanium and the spindle is titanium. They are available up to 130 mm in many of the same lengths as the Stainless Steel versions, but weigh approximately 130 gm less. Please call or email if you would like to discuss one of these.

Tools for Phil Wood Bottom Brackets

The diameter and notch pattern on the Phil Wood mounting rings are not the same as any other BB mounting system. (That's not because they choose to be different...Phil was the first to use this type of mounting, other makers of cartrdige bbs chose to create their own proprietary tooling.)

So you will need a Phil Wood tool. Sold individually, but work better if used in pairs, especially on French/Italian threaded bottom brackets.

BMRTC0 Portable/Consumer mounting tool $15.95	BMRTS0 Professional shop model $41.95

Phil Wood Bottom Bracket Spindles (Axles)

If you need to replace the spindle on a Phil Wood bottom bracket, these are what you need. Available in Stainless Steel and Titanium.

Crank Spindles - Stainless Steel $79.95
Part#	Description	Weight
BXSC5	105 mm - Short Taper	143 gm
BXS05	105 mm - Campagnolo Specific	143 gm
BXSC8	108 mm - Short Taper	143 gm
BXS08	108 mm Shimano (Standard) Taper	143 gm
BXS10	110.5 mm - Campagnolo Specific	153 gm
BXS11	111mm Shimano	153 gm
BXS13	113 mm Shimano	153 gm
BXS15	115 mm - Campagnolo Specific	153 gm
BXS16	116 mm Shimano	153 gm
BXS19	119 mm Shimano	166 gm
BXS23	123 mm Shimano	166 gm
BXS25	125 mm Shimano	166 gm
BXS27	127.5 mm Shimano	166 gm
BXS30	130 mm Shimano	166 gm
BXS35	135 mm Shimano	166 gm

Titanium spindles are available by special order, they weigh approximately 60 gm less than the Stainless Steel versions. Please call or email if you are interested in these.

If you have questions about taper compatibility, call or email us.

Phil Wood Bearings

Phil Wood bearings are the best in the world. Optimized for bicycle applications. Phil Wood specifies the race tolerance, surface honing, ball tolerance, bearing material and gap dimensions - to provide the most reliable high performing bearing possible. 100% Phil Wood waterproof grease fill is standard in all Phil Wood bearings. The various shield and multi-labyrinth seal combinations are the result of determining what has provided the best results in 30+ years of product development.

 

Shimano, and Sugino Sealed Cartridge Bottom Brackets.

The standard of the industry. These are cartridge bottom brackets with steel spindles and cartridge bearings. The UN53 and UN73 series use higher quality cartridge bearings and lighter alloy housings than the lower end UN40 and UN25s. That's why we recommend them for almost all applications. We have the lower end Shimano bottom brackets available if you insist.  

Sugino 68 x 103 mm Bottom Bracket BB105   Click "Cart" button for pricing, Hollow CroMoly J.I.S. square taper spindle BB Shell Width: 68 mm Spindle Square Taper: 103 mm Weight: 285 g BB Thread Type: ISO/English Companion to Sugino RD singlespeed crankset. This Sugino unit is about the shortest affordable cartridge bottom bracket currently available. Shimano doesn't go any shorter than 107 mm.

Shimano tapered square style axle ISO/English thread, 68 mm width

This style fits almost all frames not made in France or Italy. Spindle taper is J.I.S.

Specify:

• Spindle length: 107, 110, 113, 115, 118, 122.5, 127.5 mm

• Series:
  • UN53-UN54 (Solid Spindle) $24.95 most sizes

    

  • New! Steel Left Replacement Cup $11.95    BB1248

    If you broke the plastic left cup on your BB UN54, replace it with this steel one!
    Genuine Shimano. For 68mm BB sets.
    There's nothing wrong with the plastic left cups on the newer UN54 series BBs. But sometimes they get tightened down too much and crack.

Shimano tapered square style axle ISO/English threadOversized 73 mm width

This style fits some "mountain" frames with "oversized" bottom brackets. Spindle taper is J.I.S.

Specify:

• Spindle length: 107, 110, 113, 115, 118, 122.5, 127.5 mm

• Series:
  • UN53-UN54 (Solid Spindle) $24.95 most sizes

Shimano tapered square style axle Italian 70 mm width 36 mm x 24 TPI

This style fits most Italian-made frames (not including newer Bianchis.)

Specify:

• Spindle length: 107, 115, 118mm only
• Limited Supply!  Discontinued lengths: 110mm and 113mm (UN53 model)

• Series:
  • UN54 (Solid Spindle) $24.95

Shimano Octalink V1, spline style axle

Specify:

• Spindle length: 109.5 (double_ or 118.5 mm (triple)

• BB Shell type:
  • 68 mm wide standard thread shell (most bikes)
  • 70 mm wide Italian thread shell (most Italian bikes)

• Series:
  • 105 $47.95
  • These all fit the following Shimano crank sets: FC-7700 (Dura Ace double "9-speed"), FC-7703 (Dura Ace triple),FC-6500 (Ultegra double),FC-6503 (Ultegra triple), FC-5500(105 double), FC-5501 (105 double), FC5503(105 triple), FC-5504(105 triple), FC-M-950 (XTR), FC-M-952 (XTR).
  • Look on the back of the crank arms if you are not sure which crank set you have.
  • They do NOT fit the Shimano V2 Octalink system, which is used on Deore, LX and XT spline style, as well as 2005 Tiagra and Sora cranks. Nor do they fit the separate ISIS spline standard.

Shimano Hollowtech II Outboard Bearing Assemblies for Two-Piece cranks

These fit all Shimano Two-piece cranksets.
Ultegra BB-6600 English/ISO 68 mm 1.37" x 24 TPI Click here for pricing
105 BB-5600 English/ISO 68 mm 1.37" x 24 TPI Click here for pricing
Ultegra BB-6600 Italian 70 mm 36" x 24 TPI Click here for pricing

Old-style Cup-and-Cone Bottom Bracket Parts

Cartridge bottom brackets are really superior technology, but for some older bikes, suitable cartridge bottom brackets may not be available. We stock the necessary parts for many older bicycles.

The B on the end of the Size Codes means Bolt. The spindle has threaded holes on each end to take bolts. Some older spindles had threaded ends that took nuts. Both styles work the same and hold the cranks on similarly, but the nutted spindles are a bit heavier.

Note that installing one of these spindles backwards will sometimes solve difficult chainline issues.

These are getting pretty scarce, we have run out of most sizes, and they are no longer in production. We do from time to time find NOS (New, Old Stock) parts so we might someday get new supplies of the discontinued sizes. Please do not contact us to ask about items marked "N/A".

Part Number	Size Code	Shell Width	D Length Overall	A Length Left End	B Length Middle	C Length Right End
N/A	3H-B	68	113	30.5	52	30.5	N/A
N/A	3K-B	68	117.5	32	52	33.5	N/A
N/A	3P	68	119	32	52	35	N/A
N/A	3N-B	68	120	32	52	36	N/A
CR4O51	3S-B	68	121.5	32	52	37.5	$14.95
N/A	3T-B	68	123	32	52	39	N/A
CR4201	3NN-B	68	124	36	52	36	$14.95
N/A	3U-B	68	124.5	32	52	40.5	N/A
N/A	3TR-B	68	133	42	52	39	N/A
N/A	3RR-B	68	136	42	52	42	N/A
N/A	5J-B	70	119	32	55	32	N/A
N/A	5S-B	70	124.5	32	55	38	N/A
N/A	5U-B	70	126.5	32	55	40	N/A
N/A	7NL	73	122	32	57	33	N/A

• "3" series spindles normally fit 68 mm ISO/British/French bottom brackets
• "5" series spindles normally fit 70 mm Italian bottom brackets, also 68 mm French with thin cups
• "7" series spindles fit "oversized" 73 mm ISO/British bottom brackets, sometimes also work with Raleigh 26 tpi cups in older Nottingham-built Raleigh bikes.
• Models designated "-B" use bolts, others use nuts. Length measurement does not include the protruding thread for nut-type spindles.

ISIS Splined Bottom Brackets

ISIS Bottom Brackets from Quality Bicycle Products

Bottom Bracket Dimensions (See also my Bottom Bracket Size Article and Bottom Bracket Cribsheet)

Standard:	Threading	Adjustable (left) cup direction	Fixed (right) cup direction	Shell Width	Applications/Notes
British I.S.O.	1.370" X 24 tpi 1.375" X 24 tpi	right	left	Standard 68 mm O.S. 73 mm	The overwhelming majority of bicycles in current production. British and I.S.O. are interchangeable.
ISIS Overdrive	48 x 1.5 mm	right	left	68mm 100 mm	New proposed standard oversized system.
Italian	36 mm X 24 tpi	right	right (wrong!)	70 mm	Italian and some high-end French bicycles. Prone to problems due to the right threaded fixed cup, which tends to unscrew itself in use.
French	35 mm X 1mm (25.4 tpi)	right	right (wrong!)	68 mm	Obsolete, used on older French bicycles. Prone to problems due to the right threaded fixed cup, which tends to unscrew itself in use.
Swiss	35 mm X 1mm (25.4 tpi)	right	left	68 mm	Same thread as French, but fixed cup is left threaded for reliability.
Raleigh	1 3/8" X 26 tpi	right	left	71mm 76 mm	Older British-made Raleighs, especially 3 speeds.
O.P.C. Ashtabula	Male threads on crank 24 tpi (most) 28 tpi (Schwinn, Mongoose)			68 mm (2.68") wide 51.3 mm (2.02") i.d. (approximate)	Older U.S. bikes, BMX, Juvenile bikes, Department store bikes. 24 tpi cranks use #66 retainers, with 10 5/16" balls. Note: Some higher quality(mostly BMX) bikes used Tange 24 tpi BBs with #64 retainers. 28 tpi cranks use #64 retainers, with 9 5/16" balls.

 

Cups

Standard ISO/English Size 1.37" x 24 TPI BB022 $19.95 This size fits virtually all Asian-built bikes, also English bikes other than Nottingham Raleighs.
Italian 36 mm x 24 TPI BB025 $19.95 This size fits Italian made bikes with 70 mm wide bottom bracket shells. Both cups have right-hand thread.
Raleigh 26 thread-per-inch (Nottingham built bikes) Phil Wood has Raleigh 26 tpi retaining rings for their bottom brackets.
French Thread bottom bracket parts are on our French Cranks page Phil Wood has French-thread retaining rings for their bottom brackets.
Swiss Thread bottom bracket parts are on our French Cranks page Phil Wood has Swiss-thread retaining rings for their bottom brackets.

Grade 25 1/4" Balls bag of 25

Virtually all traditional bottom brackets use 11 1/4" balls on each side. These are the highest quality, grade 25. Many shops use the cheaper grade 100 or even grade 300, but we feel that at this price anybody can afford the best.

Using indivual loose balls is gives better results than balls in retainers, so we don't carry retainers for this application. The primary advantage of using retainers is slightly faster assembly at the factory, and also the opportunity to use fewer balls.

The 1/4" size also fits most rear hubs, 9 per side, so you might want to stock up.

See also our Bearings Page

Don't forget to use plenty of grease!

 

Sleeves $1.95 These accordion-style sleeves will greatly extend the life of your bottom bracket by preventing crud from inside the frame from reaching the bearings.

 

Crank Fixing Bolts

FSA Self-extracting Crank Bolts These fit all traditional square tapered bottom brackets. CK029 14.95 Use a long-handled 8 MM Allen wrench.
TruVativ M8 Capless Steel Crank Bolts These fit all traditional square tapered bottom brackets. CK028 $5.95 Use a long-handled 8 MM Allen wrench.
Crank Fixing bolts from Quality Bicycle Products We have the more common sizes in stock, but haven't found time to list them individually on this site.

Crank Cotters