Wanted: Compact 34/50 Chainset

Looking for a black 10 speed compact chainset, crank length 170 or 172.5mm with 34/50 chainrings. It's going on a newish bike, so needs to be in very good condition, ideally one taken off a new bike for an upgrade.

Don't mind square taper or ext bearing type, but it needs to suit a frame with a conventional threaded British 68mm BB shell.

Hi,

I've got Shimano 105 5700 172.5mm in black, which you can have for whatever they cost me. They've only done about 10 miles tops, but are 53/39.

Alternatively, I've also got 105 5600 172.5mm cranks on my road bike that you can have for way less. They're 50/34, but have done a good 2000 miles or so, but are silver.

Pm if interested.

Thanks nodachi - sounds like 2 near misses there. Really need to be black and there's a lot of 105 going on the bike so the first ones you mention do sound good. Will they take 34/50 rings, or is the bcd too big?

If memory serves the BCD for doubles and compacts are different (130 and 110), but someone will correct me if I'm wrong.

That said, I've got a compact on one bike and a double plus a 12-27 cassette on the other - both are fine on the various hills I've encountered in London (admittedly).