CX1 X-Sync Chainring Ball Hopper The 39AH offers a 7

The 39AH offers a 7

TICKR FIT uses the latest in optical heart rate technology to give you accurate heart rate and calorie burn data for up to 30 hours

Separate bottom compartment for wet gear or shoes

High-impact resistant and lightweight polycarbonate lenses

CX1 X-Sync Chainring Ball Hopper The 39AH offers a 7Mud and moving parts are enemies in the sport of cyclocross. That's why SRAM decided they were going to simplify things. Remove the front derailleur, increase the range of the cassette, make dropped chains a thing of the past, and you've got a cross drivetrain worthy of hammering. SRAM's CX1 X Sync Chain Ring is an integral part of that system. It mates to 110 BCD cranks and features a wide narrow wide tooth profile to securely hold the chain through