Shimano 6703 Rings

[Rpoole8537]

Are Shimano 6703 rings, specifically the 30T and the 39T, compatible with a Shimano 7703 Triple crankset?
Thanks!

[oldpotatoe]

Originally Posted by Rpoole8537

Are Shimano 6703 rings, specifically the 30T and the 39T, compatible with a Shimano 7703 Triple crankset?
Thanks!

Nope, 7703 crank is the ‘small ring bolted to middle ring’ gig so don’t think so.

[Bostic]

Originally Posted by Rpoole8537

Are Shimano 6703 rings, specifically the 30T and the 39T, compatible with a Shimano 7703 Triple crankset?
Thanks!

While both series are 92 bcd for the 30t that attaches directly to the 39t, the Ultegra 6703 39t ring is heavily shaped to assist in shifting. Also the bolts might not fit properly to the large ring.

[Rpoole8537]

I spoke to Peter White about TA rings and also about the 6703 and 7703 rings. the 6703 and 7703 are not interchangeable. He knowledge of rings, cranks and FD is amazing!!! Ha also educated me on Campy and TA compatibility.