Rear Type 1 VW Suspension Setups:
Swing Axle
And
Irs, Rear Independent Suspension
The most obvious difference between the two is camber effect is more severe on a swing axle versus an IRS.
Torsion Bar Lengths:
21 3/4 (Short Torsion Bar Does Not Stick Out Past Spring Plate) fits:
1960-1968 Type 1 Swing Axle
24 11/16 (Intermediate Torsion Bar Sticks Out 4 Inches) fits:
1949-1959 Type 1 Swing Axle
1969-1972 Type 1 IRS
1965-1967 Type 3 Swing Axle
26 9/16 (Long Torsion Bar Sticks Out 6 Inches) fits:
1973-Newer Type 1 IRS
