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Stone Round Chainring 107BCD for Sram Force crankset 107 bcd MTB Mountain bike Chainwheel 34 36 40 42 54 56 58 60T
Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier.
CNC process precision: 0.03mm
Material Hardness: HB150
Color: black
Size: 107 BCD
Thickness: 4MM
Speed: 9-10-11-12 speed
Fit for crankset: for Sram Force 4 arms crankset
Surface treatment: Anodize, high speed CNC
Tooth Max diameter(mm) Weight(g)
34T 146 48
42T 178 86
48T 202 114
56T 235 150
60T 250 170
