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Shimano 105 BB-5500 Bottom Bracket

Item #: BB708B09
From USD$39.99 20% off USD$49.99 msrp
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Shimano 105 BB-5500 Bottom Bracket

As a direct descendent of Dura-Ace, no other road component group provides the same cost-performance value as Shimano 105.

The Octalink V1 8-spline interface between the BB and crank arm forms a strong highly rigid connection that reduces weight and increases strength.

Shimano 105 BB-5500 Bottom Bracket Specifications

  • Material: Hollow chromoly splined spindle with alloy non-drive side cup
  • Weight: 250g
  • Compatibility: V-1, 8 spline spindle for Shimano road cranks only
  • Two Sizes: 109.5 Spindle for double cranks; 118 for triple cranks

Note: crank arm fixing bolts not included.

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by PowerReviews
Shimano 105 BB-5500 Bottom Bracket

(based on 2 reviews)

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Reviewed by 2 customers

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works for me

By Drewbacca the Bookiee

from Chicago

About Me Commuter

Verified Reviewer


  • Attractive Design
  • Durable
  • Good Crank Arm Engagement
  • Innovated Design
  • Innovative Design
  • Spindle Size Stiffness


  • Limited Stock
  • Non Serviceable Bearings
  • Obsolete
  • Relatively Small Bearings

Best Uses

  • Commuting

Comments about Shimano 105 BB-5500 Bottom Bracket:

Stock bottom bracket on my 2002 Trek 520 touring bike which I bought used. I've put about five or six thousand miles on the bb now without any signs of bearing failure. I have no idea how many miles the original owner put on the bb. While it doesn't have the advantage of a Hollowtech2 system (replaceable bearings) it does have better seals than an outboard style bearing would. The downside to Octalink is that while the spindle is larger than square taper (for increased stiffness) this also requires that the bearings be smaller due to space constraints which theoretically results in shorter bearing life. Not sure what is inside the cartridge (I've read that it's needle bearings) but I've been perfectly happy with the longevity of the product. For the other poster, the reported early failure must be due to riding style or possibly some other issue.

  • Was this a gift?:
  • No

Does not last, huge price increase

By Ryan S

from Gulf Coast, AL

About Me Avid Cyclist

Verified Reviewer


  • Attractive Design
  • Comfortable
  • Smooth


  • Flimsy Construction
  • Not Serviceable
  • Wears Quickly

Best Uses

  • Commuting
  • Road Biking

Comments about Shimano 105 BB-5500 Bottom Bracket:

Because v1 Octalink has been discontinued, Shimano is only making this one 5500 (105 level) v1 Octalink bottom bracket to support all the v1 Octalink cranksets out there in the market still being used. So the 6600 (Ultegra) bottom bracket and 7700 (Dura Ace) bottom bracket are both discontinued.

The unfortunate thing about these bottom brackets is they do not last. I have to buy a new one basically every year because they develop play in them, and there is no adjustability - which is unfortunate, because even the really cheap Shimano LP-20 BB's are even adjustable/rebuildable. I used to be able to get this exact same 5500 bottom bracket for just $29 here on Jenson (just went and looked at my Jenson order history), but I guess because they are becoming rare and people need them, they can charge more.

Having to spend $50 every year on a new bottom bracket is a bit unrealistic. At that price you may be better off buying a new crankset with outboard BB's (cheap options are Shimano Sora which supports 9spd - since anyone needing this has 9spd, or even FSA Gossamir cranks).

I have not decided what I am going to do yet, because the idea of buying another one at this price is disheartening).

  • Was this a gift?:
  • No

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