>> Diamondback Sabbath Frame
Diamondback Sabbath.
Here is the answer to all your drivetrain problems; use a gearbox.
The drive sprocket is concentric with the swingarm pivot, therefore no chain extension, therefore no need for a chain tensioner, or chain device, therefore the chain will stay on, and you can shift without pedaling.
So, take your current bike apart, put the bits on the Sabbath and get to the bottom of Ft Bill in one piece.
9" of trouble free travel.
7 speed gearbox
Fox DHX4.0
Rear hub (32H) and sprocket included.
FSA Pig 1.5"
Chain
A bargain at £2700.
All you need to complete the build is fork, bars, stem, pedals, brakes, saddle and wheelset.(rear wheel rebuild needed)