According to the AE info (from their blank pistons) the #2 piston uses a #55 hole. Typically when you drill a piston hole it has a little more damping than a molded hole... Im not sure if he was after a tiny bit more pack but Id say he started off with a blank piston (or a #3) and drilled it out.

Maybe someone from the team can confirm??

I noticed that Cragg used a #3 Ghea piston, so I think the team were trying for a bit more pack for the big jumps.

The 2.5deg rear toe-in was a surprise, as from the guys I talked to who attended the worlds, it was a low grip surface. Maybe it helped the cars rotate through the esses more smoothly?

Looking forward to testing my B4+8mm soon...


Ray