Cepek - G.T. Inc. CTIS Wheel Parts

All Cepek CTI setups use a quick disconnect which isolates each wheel keeping the air from escaping when removing a wheel from the truck. Since our disconnects completely come apart you can remove a wheel from the truck without having to remove the hub fitting. This will save you lots of time when you rotate or service your tires.

Stainless CTI Line for Factory 16.5" Steel Wheels.
These lines are a direct replacement for the 16.5" factory lines on the Hummer one piece and two piece steel wheels. These are Stainless Steel Braided lines with a 1/4 npt thread that goes into the factory style wheel fitting number 174401.

16.5" Factory 2 piece wheel - Part Number FAC174452-16-2
16.5" Factory 1 piece wheel - Part Number FAC174452-16-1

130.00 each
CTI Line Details

Stainless CTI Line for Cepek Aluminum Wheels
Stainless Steel Braided line complete with the quick release male check valve. Order these lines with 1 of 2 possible end fittings depending on which fitting you have installed in your wheels. Newer Cepek wheels usually have the Special Air Valve (#4 or 1/4" JIC) Wheel fitting. Factory wheels usually have 1/4 npt Flat - Blade fittings. The fittings are pictured below. Before ordering check with us.

16.5" Cepek wheel - 130.00 each
17" Cepek wheel - 130.00 each
18" Cepek wheel - 145.00 each
Hidden CTI line - 160.00 each

Quick Release Male Check valve
The male side of the Quick Release Coupler. Used on all CTI kits. Screws into your truck's hub with a 14mm deep socket.

Part Number HUM174449-NO

37.00 each

Female Disconnect - (Quick Release Coupler)
Quick Release Coupler. Used on all CTI kits. Pushes onto the Male Shut off valve.

Part Number HUM174449

70.00 each

Polished Guard Plate Hub Protector Kit

4 - CTI Guard Plate Spacers
4 - CTI Bolts for Guard Plates
2 - CTI Polished Guard Plates
Note: The bolts and spacers are custom. The bolts use a 1/4" hex key to tighten.

Guard kit for ONE wheel is 65.00
Guard kit for 18" wheel is 89.00 (wheels are thicker at the center and need longer bolts and spacers).

HIDDEN CTI Stainless Quick Release Line
Stainless Steel Braided line includes Stainless Male/Male 1/4 NPT CTI line attachment fitting.

16.5" Cepek wheel - Part Number HUM174472-16
17" Cepek wheel - Part Number HUM174472-17
18' Cepek wheel - Part Number HUM174472-18

140.00 each

CTI Line Details

Billet Aluminum Center Cap for Hidden CTI Kit

Part Number HUM174473

85.00

Hidden CTI Centercap Parts Kit

2 - Allen Head center cap attach screws
2 - Reducer Plugs for center cap
1 - Delron Square O-Ring for Center Cap

52.00 for ONE centercap

CTI Line Adapter
This custom machined adapter screws into a standard tire valve on one side and to a #4 or 1/4" JIC CTI line on the other side. This fitting adds 1/4" to the overall length.

This will allow you to attach a Cepek CTI line set to any aftermarket wheel. Note: Don't forget to remove the valve core.

Part Number HUM174485 - 37.00 ea.

Special Air Valve #4 or 1/4" JIC Wheel fitting. This fitting adapts any wheel that uses a standard style air valve (1/2" hole with a 3/4" counterbore) such as the Cepek Aluminum 16.5" and 17" wheels to the HUM17445217 45 degree bent tube quick release air line connection with the JIC connector.

HUM174402 - 41.00 ea.

Installation Instructions pdf

Here's what it looks like

Factory Style CTI Flat - Blade Wheel Fitting / Air Valve the same as the factory fitting except is stainless steel. Replaces the steel fittings on Hummer Factory 16.5" 2 piece steel wheels and Factory 1 piece steel wheels. 1/4" npt female. The hex size is 3/4"

HUM174401

Includes 1/2X20 Nyloc Nut - HUM174480
O-Ring - HUM174476 - 35.00 ea.

Air Valve (stem)
Screws into the Female Disconnect quick release coupler

Part Number HUM174451 - 11.00 ea.

Low Profile Metal Valve Stem

Steel air stem for a standard wheel but can and is used on the 17" wheels when going with the Hidden Line kit. This is a standard air stem for non-ctis wheels. - 10.00 each

Part Number 22000
Installation Note: