bmx 4d4d spoke drilling technology MAX carbon BMX rims by Four Directions angled spoke drilling holes that follow the path of the spokes. It helps by pre-angling the spoke holes to aln with aAttendees will enjoy an event geared toward BMX thrills and bike safety, with live BMX rider shows held at 11:30 a.m., 12:30 p.m. and 1:30 p.m.