SRAM Crankset compatibility question

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03-24-12 | 02:06 PM

xpenny

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xpenny

Joined: Aug 2006

Posts: 195

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From: Boston, MA

Bikes: Trek Madone 4.5 2008

SRAM Crankset compatibility question

Dear BFers:

I have a Trek Madone 4.5 equipped with SHIMANO 105 shifters, crankset, front derailleur and Ultegra rear derailleur. I really dig the look of SRAM Force crankset, but wonder if I would have compatibility issue if I swap the 105 crankset for the Force. Any thoughts are appreciated. Thanks.

Jason

03-24-12 | 02:23 PM

tcwayne

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From: St. Petersburg, Florida

Bikes: 2011 Specialized Tarmac SL3, 2013 Sram Red

Is that BB90? Probably just change the bearings and the Force cranks will go right in.

03-25-12 | 03:38 AM

pat5319

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From: Spokane WA

Bikes: Seven Axiom Ti, Trek 620, Masi cylocross (steel). Masi Souleville 8spd, Fat Chance Mtn. (steel), Schwinn Triple Bar cruiser, Mazi Speciale Fix/single, Schwinn Typhoon

if not newest model the shift ramps not in best spots

03-25-12 | 06:15 PM

ColinL

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From: Wichita

Bikes: Santa Cruz Blur TR, Cannondale Quick CX dropbar conversion & others

Quote:

Originally Posted by pat5319

if not newest model the shift ramps not in best spots

you may be able to use the 105 chainrings on the force crank. that would preserve your shift quality.

edit: actually, this doesn't matter anyway. bb30 won't go into bb90 frame, one of them is wider. (I think bb90.)