Okie, I bought this reed cage hoping it would plop into my Honda MB5 stock cylinder. Got it from ebay, a 2005 Aprilia RS50 4 petal reed cage with carbon fiber reeds. It's a little too deep for my MB5 cylinder and I don't want to mess with fabbing up a spacer and knocking out the mounting holes a little bit. I'm not sure if it is the cage that comes stock on a RS50- it came with a Moto Tassinari V Force sticker so it might be aftermarket.
It's pretty nice: 4 petal, stuffed, reeds are CF and in good shape. I think it may fit the Gila, AJH, and/or MB5 kits. Mounting holes are 60 mm by 35 mm. 35 mm deep.
I've attached a pic.
I'd like $35 shipped.