M Part Cartridge Bearing MR215317 21,5x31x7

When it comes to the performance and longevity of your bicycle, the importance of using top-quality components cannot be underestimated. The 'M Part' cartridge bearing is one such crucial component, built with sturdy material and attention to detail that guarantees reliability and efficiency.

This bicycle-specific cartridge bearing is a match in both specification and quality to the original bearings chosen by the expert engineers at leading bike brands across the world.

Constructed with a hard-wearing steel retainer, CrMo races and CrMo (HRC 61-66) ball bearings, the M Part cartridge bearing delivers robustness and superior resilience for extended use. The bearing's ABEC-3 tolerance stands as proof of its precision and assurance of its high-quality performance on all your rides.

The bearing is also packed with Multemp SRL (Kyodo Yushi) Grease, a high-quality lubricant popular for its wide operating temperature range and excellent resistance to water. This high-grade grease not only ensures smooth operation but also significantly extends the lifespan of the bearing by reducing friction and preventing wear and tear.

Choose the M Part cartridge bearing for your bicycle and promise it a long and efficient life. Experience the difference in your bicycle's performance with this high-standard bearing from M Part, your trusted partner in premium cycling components.