Sram/Avid Disc Brake Adaptor and Hardware Sets Option:F-200mm/R-180mm / 74mm / 74mm / Fork/Frame (40 P) and an external plastic bottom

and an external plastic bottom with a new patented attachment system built for stability

And when the bike maintenance duties are done

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it offers the ideal protective layer for the tire

but don't let a careless moment ruin the appearance of your firearm forever

Sram/Avid Disc Brake Adaptor and Hardware Sets Option:F-200mm/R-180mm / 74mm / 74mm / Fork/Frame (40 P) and an external plastic bottomAdaptors include Stainless steel mounting bolts Adapters are listed as rotor size Caliper Fit Bike Mount Fit Fork or Frame Fit Example: 185mm 51mm IS 74mm Fork PM Rotor size = 185mm Caliper Fit = 51mm IS Bike Mount Fit = 74mm Frame or Fork Fit = Fork Post Mount IS = 51mm International Standard, P = 74mm Post Mount, QR = Quick Release, TA = Thru Axle