Low profile for a variety of harsh terrain and environments
   Accurate and smooth 1:1 speed technology
   Stabilizing device for adjustable chain slack
   All aluminum alloy parts
   Weight: 318 grams

 

XRX Shifter 12 Speed
Two-way release
   Precise shifting performance
   Aluminum alloy downshift lever with anti-slip design
   Suitable for cycling in all kinds of environments
   Weight: 136 grams

 

 

Cassette
Brand: ZRACE
Model: Alpha
Material: 1-2 teeth Ultra high strength steel, hardness 680HV (M8000 hardness 580HV)
             3-11 teeth High-strength steel, hardness 680HV (M8000 hardness 500HV)
             12 teeth 7075 aluminum alloy, hardness 170HV
Weight: 11-50T: 578g / 11-52T: 702g
Ultra-light aluminum alloy bracket
Compatible with 9-11s HUB
 

 

Chains 
Brand:ZRACE (Foundry by YBN)
12-Speed
271g 126L, 4 colour: Silver/Black/Gold