This is the higher spec new version Z8.3 chain. Amazing value. New Boxed 2022 KMC Z8.3 8/7 SPEED Bike Chain inc Power Link – Shimano Sram Campagnolo. •For City, MTB, Race, Trekking and Hybrid. Pin Power: The unique KMC Bulls-Eye pin mushrooming technique, which provides 200kgf of average pin power for unsurpassed side plate retention.
eBay