• New Campagnolo Athena ESP 39-tooth 11-speed five-hole chainring.  For alloy and carbon hidden-arm cranks and mates with 52T and 53T rings.
• Made in Italy quality from 2015 and will work with 11-speed systems.
• 135bcd fits Campagnolo cranks.
• 34 grams/1.2oz.
• CRCA3769/4012.
• FREE shipping in the USA.