SRAM 11-Speed 39T 130mm BCD YAW Chainring Black Use with 53T Model-Big Apple Effective August 2018: These hangers

Effective August 2018: These hangers DO NOT INCLUDE attachment hardware

35mm oversized clamp diameter

Model E-Bike Tire Size 20"-27

with softer rubber applied to the outer row knobs for increasing cornering friction when leaned over

Enduro ABEC-5 angular contact bearings

SRAM 11-Speed 39T 130mm BCD YAW Chainring Black Use with 53T Model-Big Apple Effective August 2018: These hangersTop quality design and materials in sizes to fit modern road and 'cross bikes. 7000 series aluminum provides strength and durability Ring Position Type Inner Tooth Count 39 Drivetrain Speeds 11 Chainring BCD 130 Color Black Defined Color Black