Aero Direct Mount Chainrings for Shimano Dura-Ace R9200 Cranks Over Locknut (mm)-142 Four-way stretch breathable polyester top

Four-way stretch breathable polyester top hand construction for comfort

Waterproof with IP67 rating

Forged aluminum with an optimized shape for a tough robust and reliable crankset

}SRAM EX1 XG-899 Cassette - 8 Speed 11-48t Black

Aero Direct Mount Chainrings for Shimano Dura-Ace R9200 Cranks Over Locknut (mm)-142 Four-way stretch breathable polyester topDesigned for racing, and for those looking to optimize each detail in pursuit of speed, Wolf Tooth Aero Chainrings are strong, lightweight, and profiled to mate perfectly with your crankset for a clean, integrated look. Taking advantage of 1x drivetrain systems and wider range rear cassettes, Aero Chainrings for Shimano Dura Ace R9200 cranks are available in sizes 46T to 50T to provide similar overall range to standard 2x drivetrain configurations.