The two sets differ in the brake drum and rim used both in terms of optics and braking performance.
The set described here uses the more modern brake generation with a one-piece brake drum in the technical style of the PX models, i.e. with a brake pad friction surface cast into the aluminium. This means that the brake is much cooler under high loads, as the brake heat is transferred directly to the aluminium of the brake drum and the drum is directly in the airstream. Therefore, this set is far less prone to fading than the conversion kit with separate sheet steel drum and hub, where the rim is also closed and hardly allows any cooling air to reach the drum.
Included in delivery: