M Part

cartridge bearing mr20307 2rs 20x30x7

£10.99

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- Bicycle specific cartridge bearing
- Specification and quality matches original bearings selected by the engineers at the world's leading bike brands
- Steel retainer, CrMo races, CrMo (HRC 61-66) ball bearings
- Tolerance ABEC-3
- Multemp SRL (Kyodo Yushi) Grease