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Bottom Bracket Bearings
AIROTOR ARO-09
Lightest stainless steel rotor on the market!
Unique Ashima design
Special High Grade Improvement to 410 stainless steel (specifically for brake disk use)
Double ground for superior flatness
Heat-treated to 42HRC
Excellent wet/dry performance
Excellent disk wear
Excellent heat dissipation
Dimesnion: 160mm
Weight: 73g