Are differential drop spacers required on 05-19 Tacoma suspension systems? Adrian Aldama March 16, 2020 17:34 Updated No, front differential drop spacers are not required for ICON suspension systems. Related articles Why is the max lift height max for 2005-20015 Tacoma coilovers different than 2016+ Tacoma coilovers? My 2005-UP Toyota Tacoma coilovers came with two different size spacers for the lower mount - what is the correct orientation? Do you have to remove the over load leaf when installing an ICON 51100 Add-A-Leaf kit? Can the 05+ Tacoma hydraulic bump stop kit be installed on a stock truck? The factory upper control arm bolt and washer cannot be removed, what can be done?