Substitution CVD BB drive shaft 52mm produced from world-renowned HUDY Spring steel. This race-quality drive shaft is an extra component for #305407 CVD BB Drive Shaft 52mm - Set - HUDY Spring steel????. Recommended for used in high-traction conditions, as well as for tracks with numerous hairpin corners. Can be employed with #304972 - Gear Diff CVD BB Driveshaft Outdrives. Set of 2.