Wolf Tooth Lower Headset Cup Extender - Ec - External Cup Size:EC49 SRAM Model ID: PD-XPRO-12SL-B1

SRAM Model ID: PD-XPRO-12SL-B1

104mm BCD for use with XX1 Eagle Quarq power meter cranks

SRAM Model ID: FS-UPK-FA-A1

Offset: 44 mm

Wolf Tooth Lower Headset Cup Extender - Ec - External Cup Size:EC49 SRAM Model ID: PD-XPRO-12SL-B1These lower headset cup extenders allow you to adjust the geometry of your bike frame by increasing the effective fork length by 10mm. They allow you to do things like use a rigid fork on a suspension corrected frame or use a fork with a shorter axle to crown height rather than what the frame was designed to use. They can also be used to increase the bottom bracket height and lower the headtube angle. Wolf Tooth Precision Headsets are machined in the