This is a VERY RARE pre 1969 Campagnolo Record 49t Road Chainring 1/2 x 3/32  "151 BCD"

Campagnolo changed the bolt pattern in 1970 to the standard 144 BCD pattern and introduced it as NUOVO RECORD. The 151 BCD pattern remained on all Track Crank Arms through the 1970's. Until it too was changed to 144 BCD in the 80's.

This chainring could be used on Pre 1969 Record Crank Arms as well as Track Crank Arms from the 1970's. That the user wanted to run a 3/32 chain instead of standard 1/2 x 1/8 Track size.

*** NOS!!! - Only a few left!!!

* Old inventory from my over 60 years in business bike shop.