Fit DataWith the Ergo Armrest:Location Bolt Size TorqueHandlebar clamp M6x18mm 6Nm (53 inlbf)Extension clamp M5x14mm 5Nm (44 inlbf) Armrest Bolts M6x13mm CS 4.7Nm (42 inlbf)Weight 555gArmrest Offset -95mm to -42.5mm in 7.5mm stepsArmrest Width 124mm to 290mm in 18.5mm stepsArmrest Stack 59mmExtension Width 100mmHandlebar Clamp 31.8mmExtension Clamp 22.2mm