This is our 5" premium full kit.  It features a D size (1.5" OD and 1.36" ID) 5" titanium tube with a 2" machined in spacer.  Side "A" is machined to a 1-3/8" x 24 thread.  Side "B" is threaded in 1-7/16 x20 which is standard D thread.

The kit comes with:

(1) Titanium D cell tube in 5"

(2) 17-4 SS hybrid stepped cups

(3) Titanium hybrid stepped cups

(1) D cell end cap

You may add a direct thread adapter onto this kit.

The supplied end cap takes a 1/2" allen key to tighten and does not have a shoulder - (this offers adjustability .06" each way)

Note: This kit does not require any shimming or tuning of any kind.  It's truly plug and play.