
Special rear wheel conversion kit with industrial bearings and a complete wheel axle, compatible with the rear wheel of your Pony GTX 503 and GTX 521 mopeds.
The benefits of this conversion kit include improved stability, reduced vibration, and longer bearing life.
The kit is equipped with two ball bearings from the world’s leading manufacturer, SKF, complemented by precision steel spacers and a complete axle set from the quality brand swiing® ingenious.
The colored markings show you where each component should be installed:
Notes:
The Ponys were equipped with different rim types at the factory. This wheel axle is designed for rims that have a bearing seat for a 32 mm ball bearing on one side and a bearing seat for a 30 mm ball bearing on the other side.
Also note that the brake anchor plate must be reamed from 11 to 12 mm.
You can find additional wheel axles, as well as chain tensioners and a bearing press tool, in the accessories section.
A sophisticated product from the premium brand swiing® that meets the highest standards.
| Manufacturer | swiing® ingenious parts |
| Ball bearing closed | Yes |
| Material | Steel |
| Surface | galvanized (blue) |
| Total length | 175 mm |
| Thread type | MF12x1.25 (fine pitch thread) |
| Width across flats | 17 mm |
| Sachs | 503 |
| Pony / Cilo (Beta 521 & 512) | Pony GTX 521 (frame) |
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