They are a 1" hole. I just drilled out the factory hole to 1" and installed them, no going back to factory bulbs now. They are super bright. I went with the 120s they shine all the light straight out the back and do not use the factory reflector.
Ordered 4-23-15, built 5-21-15, sitting in my driveway 6-8-15. Canyon SLE, crew cab, long bed, 2wd, Bronze Alloy, Cocoa Dune.
Roll N Lock bed cover and cargo manager, custom made tool tray, OEM mud flaps, front windows tinted, running boards, 300 Watt Inverter with Sierra OEM plug, Warning Lights for fire dept, 6K HIDs lows and highs, LED fog light bulbs, 30" LED light bar, 2.5" front lift with 1" rear, Michelin AT/2 265/70/17, custom sports bar with 2 LED light bars, Rigid cargo lights.
Last edited by team helotes; 09-06-2015 at 02:23 PM.