We examined 3 brand new, high-end, 10sp chains to determine how an 8-hour break-in affected the average efficiency. How much improvement in efficiency can be gained? Download the report to find out why you don't want to race on a brand new chain.
Campagnolo Ultra Narrow Record 10
Shimano CN-7901 (Dura Ace)
SRAM PC-1091R (Red)
Run time= 8 hours @ 250 watts load