90s MTB Campagnolo Centaur 8 speed groupset - Bike Forums
Amazon.com : Box Four 8 Speed Multi Shift Cycling Groupset with Rear Derailleur, Bike Shifters, Bike Cassette, Chain, Shift Housing Kit Components Mountain Bike Drivetrain Upgrade : Sports & Outdoors
MicroSHIFT Acolyte 1 x 8 speed group for mountain bikes brings riding back to basics - Bikerumor