Join Date: May 2004
Location: Wilmington, DE
Bikes: 1984 Trek 660, 2003 Specialized Hardrock, 2004 LOOK KG386i (RIP), 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1, 2014 Islabikes CNOC 14 (son's)
Mentioned: 4 Post(s)
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Quoted: 365 Post(s)
Originally Posted by sivat
Both Surly and Soma make bikes with downtube shifter bosses for decent prices. If you're looking for aluminum or carbon though, you're probably out of luck.
From what I've seen (which I'll admit isn't too many different frames) as long as the frame does NOT have built-in stops for STI shifters, you can mount downtube shifters to it. You can do this because, in a stroke of genius (or just good planning), Shimano made the boss for their newer STI shifter stops the same as the boss for their older downtube shifters. As such, I was able to mount adjustable stops for STI shifters on a 1989 Trek 400 frame without modification and I could have (but didn't) mount downtube shifters on my 2004 LOOK KG386 carbon frame, again without modification. If this info does not apply to all types of downtube shifter and STI stop bosses, I'd appreciate being informed about it.