Flange: 57 mm

What's included

Wiring harness (to control the light with stock high/low handle bar switches)

these are reassuring solid and stable workshop stands

If you want the road version

Motion Pro - Stop/Start Switch Options:Start/Stop Switch Enhanced Flange: 57 mmStarter switch has two separate circuits, one normally open, one normally closed for street bikes that use a headlight starter cutoff. 550mm long wiring harness with brake light switch circuit wiring. 120mm long brake light circuit wiring pigtail with female spade connectors. Wiring harness has bare, tinned wires without connector for easy installation of O. E. connector body. Specifications Required for installation of Revolver Throttle Kit on bikes