Sigma Butler 2450 Out-in-Front Handlebar Mount: Black 31.8 Handlebar Mount Product Type_Single-Speed / Dingle-Speed Tensioners Rise creates a more upright

Rise creates a more upright and comfortable riding position without the use of a highly angled stem or excessive headset spacers

and are encased in a lightweight

Separate dedicated lever for up- and down-shifts

8mm rise -25 deg length 100mm color black

Allows riders to indefinitely swap between air and coil spring options

Sigma Butler 2450 Out-in-Front Handlebar Mount: Black 31.8 Handlebar Mount Product Type_Single-Speed / Dingle-Speed Tensioners Rise creates a more uprightThe Butler can be used on any 31. 8 mm handlebar and places the computer in front of you while riding. Out front mount offers better visibility of computer Color Black