Enduro MR 2437 Bearing ABEC-3 BO helmets Sculpted contact points for the

Sculpted contact points for the “hoods” and “drops” riding positions for better ergonomics

so vision can stay sharp when riding road

and washable Protective Coverage Extended rear cover for added head and spine safety

With its lightweight sprocket carrier

Enduro MR 2437 Bearing ABEC-3 BO helmets Sculpted contact points for theABEC 3 Radial Bottom Bracket Bearing featuring Black Oxide treated 52100 High Carbon Chromium alloy races paired with grade 10 Balls with 90% fill, Mobil XHP 222 high pressure, water proof grease. The most common use for this bearing is as a direct replacement bearing for Shimano type external cup BBs and cranksets with 24mm spindles. The Enduro line of bearings are available in high carbon chromium steel, 440C stainless steel, ceramic hybrid and XD15