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  1. #1
    Senior Member canflyboy's Avatar
    Join Date
    Aug 2008
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    Shimano 2/3 shifter

    I had to replace my worn Tiagra 2 speed shifter. The LBS had a pair of 105's take off's at a great price. These shifters are typically listed as 2/3 speeds. Because I'm replacing a two speed, would I need to modify the left shifter in any way to work on a two speed vesus a three speed?

    1970 Raleigh Tourist, 1972 Raleigh Sports, 1984 Miele Road Bike SS, 1985 Bianchi Nuovo Alloro, Cannondale F400, Opus Avro 29er, Jamis Sonik, Blue CXC, Bianchi San Jose, Cervelo SL-SLC, Cervelo S3 Di2 and a wife that loves me!

  2. #2
    sch is offline
    Senior Member
    Join Date
    May 2003
    Birmingham. AL
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    No just adjust the FD limits as indicated for the double chainwheel and the triple
    brifter will work fine. Triples have actually four positions, with the middle two
    being about 2/3 or a bit less of a full shift to give you some vernier on the chain
    position in the FD cage reducing chain rattle at the ends of the cassette.

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