e*thirteen e*spec Steel Direct Mount Chainring - 34T Bosch CX Gen4 CL 53/55 via Spacer BLK Casing-XCC S1 (formerly Z-410): bushing-less design

S1 (formerly Z-410): bushing-less design for normal BMX and Singlespeed use

Side knobs have a more round profile with accordion siping and arched cutaways for predictable loading

Designed to be light stiff and provide pin-point steering the Hope AM/Freeride Stem is proudly CNC'd in the UK

Works with 142 148 12mm thru-axle as well as 135mm with 10/12 washer

e*thirteen e*spec Steel Direct Mount Chainring - 34T Bosch CX Gen4 CL 53/55 via Spacer BLK Casing-XCC S1 (formerly Z-410): bushing-less designe*thirteen e*spec Steel Direct Mount Chainring 34T Bosch CX Gen4 CL 53 55 via Spacer Black. New e*spec Steel Direct Mount Bosch CX Gen4 Chainrings feature 53 55mm adjustable chainline with included spacer. They utilize e*thirteens M3 narrow wide tooth profile which reduces weight and minimizes system wear and noise without sacrificing chain retention. Steel rings provide great performance and long wear life at an affordable price. TECH SPECS Color