A beefed-up tranny is a must for drag racing, off-road competition and road control. Put the power to the ground with a 4 Spider Super Diff by Weddle Industries! It's Double Strength of your stock VW spider section and is machined from a 2X thick steel casting that helps eliminate flexing and increases gear life. They deliver the strength and durability needed for high-performance engines and quick shifts.

Fits Type-1 1969 and later IRS transmissions. Takes 10-tooth spider gears and 15-tooth side gears (sold separately).