Q-Tower (PN 8000124) 1994 - Present: For Naked roof fits. First generation Q-Tower was PN 800105, please see this article regarding fits. Q-Towers use Q-Clips, not compatible with BaseClips or Y-Clips. Q-Towers are being phased out and will be replaced by the BaseLine in 2018
1987-1996: 1C SST Tower (PN 8000102) For naked roof fits, used Y-Clips, not compatible with Q-Clips or BaseClips. Click here for a list of historical fits.
2009 -2016: RailGrab Tower (PN 8000138) Fit on factory sideRails. Replaced by the TimberLine tower in 2106. Click here to see a list of historic fits for this tower.
TimberLine Tower (PN 8000147) 2016 - Present: Fits Raised factory rails, replaced RailGrab towers in 2016.
Control Tower (PN 8000214) 2002-2016: Mounts to factory tracks and some raised rails by use of Landing Pads. Replaced with SkyLine in 2016.
1A / 1A HighRise Tower (8000101) 1979 - Present: Used on cars with external rain gutters or with TopLoader, SideLoader or Widebody Brackets. For more information on the brackets click here. Not compatible with tracks, naked roofs, or any type or clips, Q, Y, or BaseClip.
Locking RailRider 1, 2, 3 (PN 8000208, 09, 10) 1997-2002: Fit on factory tracks, , same towers, different mounting hardware. Mounting hardware used with these was similar to the current Landing pads, but these towers are not compatible with Landing Pads.
DoubleCross (PN 8000110) 1995-2002: Fit on raised factory rails. Replaced by LowRider in 2002. Click here for more information on this tower and a list of historical fits.
LowRider / LowRider Max (PN 8000118, 8000136) 2001- 2009: Fits on raised factory siderail, replaced by RailGrab in 2009. LowRider Max used one of three different Claws depending on vehicle. Click here for more information on this tower and a list of historical fits.
EzRider / Locking EzRider. 2004-2009: Fit on some raised and flush mounted siderails, replaced by the RailGrab in 2009.
If you have questions you can contact customer support here, or by calling 888-925-4621 M-F from 7 to 4 PT