Team Credence wanted to tweak the classic Challenger stem to suit their brand of riding. The result is the Turtleneck – a 6061 T-6 aluminum CNC machined stem that’s a hair longer & narrower, with an internal cutout that lightens it up. section Product Specs TYPE: Top Load REACH: 52mm RISE: 24.5mm CLAMPING DIAMETER: 22.2mm WEIGHT: 357g