The Tibia cranks feature a slim arm design constructed of 4130 CrMo for both the arms and the spindle

in the right configurations

Steerer Length: TBC

What set the Proton apart from the Neutron are a 100% CrMo frame

Profile Column 22mm Crankset Size:160mm The Tibia cranks feature aThe Profile Column Cranks were built and designed to handle the most demanding street BMX riding. They feature a brand new arm design which is beefier and stronger than the regular Profile Race Cranks, with an upgraded ultra hollow 22mm heat treated spindle reducing weight without sacrificing strength. Made from the finest 4130 chromoly and hand made in the USA, the Profile Column Cranks are built tough. ###section### Product Specs Crank Type: 3 Piece