The bottom bracket bearings for the HollowTech II FC7900 crankset, which is the ultimate crankset for stiffness whilst keeping weight low for performance riding and racing.

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Questions & Answers for Shimano Dura Ace 7900 Bottom Bracket Cup Set

Question

Does it will fit 7800 crank

I wonder if the 7900 BB will fit the 7800 crank?

Country: Australia

asked 1 year, 10 months ago

teckhous

- Melbourne, AU

on Dura Ace 7900 Bottom Bracket Cup Set

3 answers

Answers

answer 1

yes, is compatible.

Country: Spain

answered 1 year, 4 months ago

cbike

- madrid

answer 2

Yes it will.

Top 100 Contributor

answered 1 year, 8 months ago

Charboy

- Melbourne

answer 3

yes you can use this on the 7800 crank set.

answered 1 year, 10 months ago

WiggleDean

- Hampshire

Question

can the Dura Ace 7900 BB be used with the ultegra 6750 chainset, if no do you have a date when you will be getting the ultegra bb in stock

asked 1 year, 9 months ago

WanganuiRider

- Wanganui

on Dura Ace 7900 Bottom Bracket Cup Set

3 answers

Answers

answer 1

yes

answered 1 year ago

TeamSky1

- Glen Waverley

answer 2

Yup, same thread and size...only difference being weight and quality of the bearings.

Did similar myself, see here
http://www.emoose.org/blog/index.php/cycling/hollowtech-bottom-bracket-replacement/

answered 1 year, 8 months ago

eMoose

answer 3

You can use any Hollowtech II bearing cups with any Hollowtech II chainset so this is fully compatible

answered 1 year, 9 months ago

WiggleDean

- Hampshire

Question

BB Thread

Is there an easy way to tell which thread I have on my bike?

asked 1 year, 5 months ago

Skyhigh

- Melbourne

on Dura Ace 7900 Bottom Bracket Cup Set

3 answers

Answers

answer 1

If you bought the bike here it will be english.

answered 1 year ago

TeamSky1

- Glen Waverley

answer 2

if the width of the botton braked is 68mm, is english thread, and if is 70mm is italian thread.

Country: Spain

answered 1 year, 4 months ago

cbike

- madrid

answer 3

Not as such, you can measure the length of your bottom bracket shell, 68mm is English, 70mm is Italian. Due to the very close numbers though this isn't ideal. Most frames are 68mm, usually only Italian frame manufacturer's use 70mm and even then some still use 68mm. Best to check with the manufacturer of your frame but if it is one of the big US or EU brands such as Specialized, Giant, GT or similar you will likely have a 68mm English shell.

answered 1 year, 5 months ago

WiggleDean

- Hampshire

Question

Will this be compatible with a "07 Giant TCR C2?

The bike came with all 105 gear but I figure if I'm going to replace the bottom bracket I might as well upgrade it if I can. Also, would I need English thread?

Country: Australia

Products related to my question

Dura Ace 7900 Bottom Bracket Cup Set

(45)

asked 1 year, 1 month ago

Anonymous

- Ballarat, Vic

on Dura Ace 7900 Bottom Bracket Cup Set

3 answers

Answers

answer 1

Not a problem to fit this as an upgrade, depends if you are using a compact or triple, you may need to re-align the chain line with spacers. To start witrh use any that are on the exsisting bottom bracket

Country: United Kingdom

answered 3 months ago

Raffles

- Dorchester

answer 2

I just placed one on my Specialized which it all 105 and it fits and works well

answered 1 year ago

TeamSky1

- Glen Waverley

answer 3

Yes you can use this bottom bracket with any Hollowtech II chainset. You would need English thread for a Giant frame.

Country: United Kingdom

answered 1 year, 1 month ago

WiggleDean

- Hampshire

Question

Will this BB fit a Giant Defy Advanced frame?

asked 2 years, 3 months ago

Anonymous

on Dura Ace 7900 Bottom Bracket Cup Set

2 answers

Answers

answer 1

Yes. But make sure it's the right BB for your cranks

Top 1000 Contributor

answered 2 years, 2 months ago

BikeBear

- London

answer 2

Yes, it is available in both common frame threads which are English(68mm wide shell) and Italian (70mm wide shell). I believe Giant road bikes use an English 68mm shell.

answered 2 years, 3 months ago

BigSi

Question

Will this 7900 BB fit my 7800 dura ace cranks?

Di I look for a 7800 BB or can I use a 7900 BB?

asked 2 years, 3 months ago

Parleerider

- Canberra Australia

on Dura Ace 7900 Bottom Bracket Cup Set

2 answers

Answers

answer 1

Hi , it should do , I have fitted one along side an Ultegra 6600 chainset. Check out the Shimano web site it has a break down of compatible parts. I cannot see Shimano altering the axle diameter on the Hollowtech 2 system.

Country: United Kingdom

Top 500 Contributor

answered 1 year, 10 months ago

Mills

- Derby, UK

answer 2

This BB will fit 7800 and 7900 chain sets.

answered 2 years, 3 months ago

BigSi

Question

I just bought an '08 Cervelo P3 with no cranks or BB. I bought a DA 7800 crankset and now need a BB. Will the DA 7900 BB work?

asked 1 year, 11 months ago

withrow79

on Dura Ace 7900 Bottom Bracket Cup Set

2 answers

Answers

answer 1

If the crankset is HollowTech then it will fit. This bottom bracket will fit any of the Shimano 10sp road cranksets that are HollowTech.

The FAQ section of the Shimano website has a compatibility checklist.

http://cycle.shimano-eu.com/publish/content/global_cycle/en/nl/index/tech_support/faq_s/compatibility.download.-Par70parsys-0024-downloadFile.html/Road_charts_2009.pdf

Top 500 Contributor

answered 1 year, 11 months ago

LycraLout

- Portsmouth, Hampshire

answer 2

Yes you can use the 7900 bb with the 7800 chainset.

answered 1 year, 11 months ago

WiggleDean

- Hampshire

Question

Frame Suitability

What is the difference between English and Italian thread?

I am after a bottom bracket to suit my Argon 18 Gallium Pro frameset.

Country: Australia

asked 1 year, 10 months ago

Stets

- Geelong

on Dura Ace 7900 Bottom Bracket Cup Set

2 answers

Answers

answer 1

if the width of the botton braked is 68mm, is english thread, and if is 70mm is italian thread.

Country: Spain

answered 1 year, 4 months ago

cbike

- madrid

answer 2

The Argon 18 Gallium Pro uses a English 68mm shell bottom bracket. The Italian bottom bracket size is 70mm and also has a reverse thread on one of the cups.

answered 1 year, 9 months ago

WiggleDean

- Hampshire

Question

Would this bracket fit on my giant scr 3.0?

I have recently bought a 2007 giant scr 3.0 road bike and the bottom bracket is pretty worn. I am a road bike novice but this bracket looks the same as the one i have currently.
Thanks

asked 1 year, 10 months ago

Anonymous

on Dura Ace 7900 Bottom Bracket Cup Set

2 answers

Answers

answer 1

Not sure if this will help but, I replaced a MegaExo BB, FSA Gossemer chainset, with a DA one on a Planet-X Uncle John and it fits both the chainset and frame perfectly. I think you'll be OK as long as your chainset isn't a GXP one, those need additional spacers.

answered 1 year, 6 months ago

nalmond

answer 2

I am sure the bottom bracket will fit the frame but make sure that you have a Shimano Hollowtech II chainset or compatible chainset as there are other standards such as mega Exo or GXP that may not be compatible

answered 1 year, 9 months ago

WiggleDean

- Hampshire

Question

Can I use the Shimano Dura Ace 7900 Bottom Bracket Cup Set with an Ultegra 6750 Chainset.

I have an unhappy teenager waiting for me to fit his new chainset to his new frame.

Country: United Kingdom

Products related to my question

Dura Ace 7900 Bottom Bracket Cup Set

(45)

Ultegra 6750 Hollowtech II Compact Chainset

(10)

asked 1 year, 9 months ago

Podgethepuffer

- Hungerford

on Dura Ace 7900 Bottom Bracket Cup Set

2 answers

Answers

answer 1

Yup, same thread and size...only difference being weight and quality of the bearings.

Did similar myself, see here
http://www.emoose.org/blog/index.php/cycling/hollowtech-bottom-bracket-replacement/

answered 1 year, 8 months ago

eMoose

answer 2

Yes you can use any Hollowtech II bottom bracket cup set with your chainset.

answered 1 year, 9 months ago

WiggleDean

- Hampshire

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Shimano Dura Ace 7900 Bottom Bracket Cup Set