flex?2 Wheel Light - Black/Purple Contains 15 high-power 5050 LEDs that are pre-wired with 84" black sheath wire leads that make it easy to install in almost any application, Fits any bike where back side of brake caliper is flat and there is 5/8* between the caliper and wheel, Mount to most H-D brake calipers (except models with narrow glide front ends and '06-'13 V-Rod), Mount using 3M double-sided tape that is pre-installed on each FLEX? Wheel Light, Measures 2.9" x 2.3" x .4"