What’s the difference between standard and extended travel 2007 - 2014 FJ Cruiser coilovers?

The ICON extended travel coilovers are intended to be paired with aftermarket upper control arms. The added angularity provided by an aftermarket UCA allows ICON engineers to give the vehicle more down travel then the stock coilover. The ICON extended travel coilovers all you to tapping into all the travel your vehicle is capable of.

Standard Travel: 58640, 58646, 58740, 58746, 58740C, 58746C

Extended Travel: 58645, 58647, 58745, 58747, 58745C, 58747C