One of the biggest changes for 2007
is the addition of a new rule regarding the clutch/crank support.
A clutch/crank support is mandatory
on any car running 9.99 or quicker and is accepted on any vehicle.
The clutch-side crank-support bracket and bottom plate must be made
of minimum .350-inch-thick aluminum at its thinnest point. The
clutch/crank-support bracket must be connected using either
three 5/16-inch bolts or four 1/4-inch bolts
to the bottom plate.
Amend's crank supports are
CNC machined from a special aluminum alloy plate that provides a
combination of high strength, high fracture toughness and good
resistance to fatigue crack propagation at high stress levels.
The crank supports are then polished with a high energy finishing
machine to remove stress risers and to give the crank supports a
durable polished finish. We do carry these in stock for