Plastic pulley sets PR01 (11T) and PR02 (12T):
Follow the markings on the pulley wheels indicating the upper (UP) and lower pulley (DOWN) IMPORTANT:
Follow the directions of the arrows on the pulley wheels indicating direction.

All aluminum pulley sets (11T, 12T and 12X14T):
No difference between upper and lower pulley, no specific direction to follow.

Compatibility PR01 and aluminum pulley (11T):
M9000, M9050, M980, M8000, M8050, M780, M7000, M670, R9100, R9150, 9000, 9070, 7900, 7970, 7800, R8000, R8050, 6800, 6870, 6700, 6770, 6600, 5800, 5700, 5600, RED® eTap, RED®, Force® 22, Rival® 22 - Mid cage WiFLi™, Rival® 22 - Short cage, RED® WiFLi™ 10-Speed, Force® WiFLi™, Rival® WiFLi™, Apex® WiFLi™, RED® 10-Speed, Force®, Rival®, Apex®, X01 10-Speed DH X-HORIZON™, XX, X0, X0 DH, GX 2x10, X9, X7, X5

Compatibility PR02 (12T):
XX1 X-HORIZON™, X01 X-HORIZON™, X1 X-HORIZON™, GX 1x11 X-HORIZON™, GX2x11, NX 1x11 X-HORIZON™, X01 10-Speed DH X-HORIZON™, XX, X0, X0 DH, GX2x10, X9, X7, X5, SRAM Force® 1, SRAM Rival® 1, SRAM APEX® 1
Compatibility aluminum pulley B024 (12X14T):
GX Eagle™, NX Eagle™, X01 Eagle™, XX1 Eagle™

NOTICE: Install 4 mm sleeve when needed.