Replacement CVD BB drive shaft 50mm created from world-renowned HUDY Spring metal. This race-quality drive shaft is a spare component for #305409 CVD BB Drive Shaft 50mm - Set - HUDY Spring steel. Suitable for found in high-traction conditions, and for tracks with many hairpin corners. Must be used with optional #304972 - Gear Diff CVD BB Driveshaft Outdrives. Pair of 2.