ProX Crankshaft Bearing Set & Retaining Ring Kit for KTM50SX '24-25 + TC50 '24-25 + MC50 '24

Restore quiet, smooth, and reliable engine performance to your mini cross bike with the ProX Crankshaft Bearing & Seal Kit (ProX ref. 23.CBS60024). This complete kit is specially developed for the brand-new generation of 50cc 2-stroke motorcycles: KTM 50 SX 2024-2025, Husqvarna TC 50 2024-2025, and Gas Gas MC 50 2024.

ProX Racing Parts is renowned for high-quality replacement parts that fit perfectly with ProX or OEM crankshafts. This kit includes two precision crankshaft main bearings from top manufacturers such as Koyo or NTN, plus all the matching crank seals for a complete, leak-proof installation. The bearings are manufactured exactly to the latest factory specifications and built to handle the high RPMs and heavy loads of a modern 50cc mini cross bike engine.

After a season of hard riding, excessive play, a humming or rattling noise from the crankcase, and potential oil leaks often develop. This can lead to serious damage to the connecting rod, piston, and entire engine. With this ProX kit, you can quickly reinstall a tight crankshaft that generates less friction, runs smoother, vibrates less, and significantly extends the service life of your small engine.