Lot of reinforcement in the front. Their special tappet plate has two ridges cut out(you can modify a normal tappet plate to fit) allows the rails inside to extend all the way to the front of the gearbox for more reinforcement. The outside has small extension from the front for even more reinforcement around the cylinder head area. This gearbox rocks. Extremely well made. The cutout holes around the gears helps with shimming and seeing whats goign on while you try and troubleshoot something. u
Its a very light but very strong gearbox. Right now its in a M16 DMR with a guarder sp130 and it can take the punishment in full auto with a 11.1v lipo.
everything dropped right in and fit
Fit in a CA body even with the extra reinforcement
tappet plate. not a BIG con, just 2 minutes with a dremel and a normal tappet plate and your good