Substitution CVD BB drive shaft 54mm created from world-renowned HUDY Spring metal. This race-quality drive shaft is an extra part for #305408 CVD BB Drive Shaft 54mm - Set - HUDY Spring Steel????. Recommended for use in high-traction conditions, and for tracks with numerous hairpin corners. Is employed with #304972 - Gear Diff CVD BB Driveshaft Outdrives. Group of 2.