The BB30 Bottom Bracket Bearing Kit features Enduro's precision engineering with deep-groove races optimised for maximum ball diameter and load capacity. Available in 440C stainless steel, ABEC3, ceramic zero, or XD-15 configurations, these bearings incorporate dual-lip seals seated in micro-grooves that create a complete labyrinth seal—delivering superior protection against contamination and moisture ingress for extended service life and reliable performance across demanding riding conditions.