DIY upgrade your classic VW to rear disc brakes with this pair of Polo 9N stub axles. They directly fit Mk1, Mk2, and Mk3 twist beams but allow integration of more modern (Mk4) generation bearings. Early generation disk bits are now getting rare. Here is the OEM+ basis of proper retromod conversion.
 |  |
| VW Polo 9N rear stub axle | VW Mk1 rear stub axle |
Compare closely and you'll see the difference that allow for lower mass rear end, stronger stopping power, and easier maintenance. These are for wise builders who want to stop as well as they go. If you want a more complete solution, see our VW MK1/2/3 to Polo Rear Stub Axle/Bearing Upgrade.