This is new B.T.R cassette hub guard, or with other word the Bolt Type Raptor cassette hub which features an oversized bearings compliment to a 11 mm female axles, 14 mm bolts and 4 pawl driver with polymer bushing. To go along with this hub, Shadow exclusively made three different hub guards, a standard non-drive side alloy guard, a chromoly steel non-drive side guard and a chromoly steel drive side hub guard. If you are looking for a new tough hub, this could be the one.
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