There are four models in SCADA’s Keo range in two tiers. The SC-R302 is the first of the two models in the top tier. It’s constructed from 6061 aluminum. The body is CNC machined.The axle is Chromoly, and is also CNC-machined. The spring-loaded binding which holds the pedal cleat in position is made from thermoplastic reinforced with glass-fiber. The tension is adjustable. Compatible cleats are: SC-ARC10, SC-BLK10, SC-ARC11, and the SC-BLK11. The bearing is LSL bushing, sealed. Each piece weighs in at 157g.
A note about LSL bearings or Lightweight Self Lubricating bearings which are oil impregnated bushing bearings. These allow building a lighter pedal. The profile is lower which means a lower stack-height. The stack height is the distance from the center of the axle to the sole of the shoe. They are extremely light, extremely low friction, and almost completely unaffected by temperature. They can also take heavy loads under low velocity as in cycling.
The second model model in the top tier is the SC-R305 made from 6061 aluminum. The body is CNC machined.The CNC-machined axle is chromoly in cartridge form. The spring-loaded binding is made from thermoplastic reinforced with glass-fiber. The tension is adjustable. Compatible cleats are: SC-ARC10, SC-BLK10, SC-ARC11, and the SC-BLK11. The bearing is LSL bushing, sealed. Each piece weighs in at 146g.
The first model in the second tier is the SC-R304ST with a thermoplastic injected body rather than aluminum. The axle is CNC machined. The spring-loaded binding is thermoplastic reinforced with glass-fiber. The binding tension is also adjustable. Compatible cleats are: SC-ARC10, SC-BLK10, SC-ARC11, and the SC-BLK11. The bearing is LSL bushing, sealed. Each piece is 125g.
The second model in the second tier is the SC-R301, also available in a variation—SC-R301B. The body is made from die-cast aluminum, with a CNC-machined chromoly (cartridge) axle. The binding is thermoplastic, fiber-glass reinforced. The binding tension is also adjustable. Compatible cleats are: SC-ARC10, SC-BLK10, SC-ARC11, and the SC-BLK11. The bearing is LSL bushing, sealed. The SC-R301B version has ball bearings. Each piece is 164g.