-The AC-2 hubs use 20mm Angular Contact bearings with a wave spring pre-load

front and side pockets

extra crank arm spacers

sealed Mid BB and a fully sealed cassette hub

It features an exterior zipped pocket for cables and accessories and a webbed hanging loop for use with a strap or securing it inside a bag

S&M Passero Signature Whammo V2 Frame Size:20.5" -The AC-2 hubs use 20mmWith a shorter back end (12. 9"), taller headtube (5") and raised bottom bracket (11. 8"), the Whammo V. 2 will have you shouting Wham Bam, thank you Man! The taller headtube (ie. less spacers) translates into a cleaner setup, the shorter back end makes it more responsive and the higher bottom bracket improves sprocket clearance when grinding. The rest? Tried and true from the first Whammo. ###section### Product Specs MATERIAL: Chromoly ThermalX