What are some of the reviews on them? Are they really just crash boxes that you can just shift? Are they close in weight to a regular crash box. I just would like some info on them, any input is appreciated. Thanks

essentially they are the same units with the addition of an air system to operate the shifting.
when i get home later i ll post a link if some one else doesnt.

Most people who have them really like them. They are basically regular crash box with the addition of a clutch assembly that is air actuated, which allows you shift without killing the motor. About 10K/motor.

First pictures show's one mounted, they use a 4' spacer between the Engine and the bell Housing to have a place for the clutch, as noted it engauges with air to shift once released your back to a full ZERO DRAG crash box.

Jon

heres that link
www.scsgearbox.com