The Pro 3 & L3 Front Wheel Holder combo package helps you to carry all road types of bikes or mountain-bikes, and placing the front wheel next to the rear wheel on top of your car. The package comes with a Pro 3 double layer deck, 3 pieces 9-15x100mm fork mount and quick releases(or you can choose 3 different fork mounts from our chart, no additional fee to swapping the 9-15x100mm fork mounts out to 3 fork mounts you request), 3 rear wheel holders, and the L3 front wheel holder, with 3 metal front wheel carriers.
If you choose the 9-15x100mm fork mount, when you transport a 15x110mm thru axle mountain-bike, please remove the 9mm plugs from the fork mount, and the 9-15x100mm fork mount becomes a 15x100mm thru axle fork. You can order a Green 15x10mm Boost Spacer from the accessory page, to add to the 15x100mm fork mount, to boost it to 15x110mm size.
To transport a 12x100mm or a 15x110mm thru axle front wheel on the L3, please use TreeFrog 9x100mm quick release to secure the front wheels to the L3 metal front wheel carriers.