Second Generation
2011-2013 Cobalt / Iodine / Sage – 2 Level -142 X 12 Axle
Also fits second generation Cobalt / Iodine / Opium 3/11 142 /150 X 12

Third Generation
2014 -2016 Cobalt / Iodine – 2 Level -135 X 10 / 142 X 12 Axles
Also fits second generation Cobalt / Iodine / Opium/ Sage – 2/3/11 – 142 /150 X 12 Axles

Fourth Generation
2017+ Cobalt / Iodine 1/2 Level All Axles

Features / Highlights
– Steel outer body maximum durability (cogs wont dig into splines) – Model # FH-501
– Dark grey colored
– External 3 pawl mechanism
– Rust resistant wire pawl spring
– 6902 Cartridge style bearings X 2
– 16mm Steel axle spacer
– Fully serviceable
– Grease based lubrication
– Easily removable
– 8 /9/10/11 speed Shimano / Sram MTB cassette compatible. – Steel cog stack type cassettes OK
– 147 Grams