This Enduro 24x37 Angular Contact Sealed Bearing from Wheels Mfg is a robust choice for upgrading or replacing your bottom bracket bearings. Designed to handle both radial and axial loads, these angular contact bearings provide superior efficiency and a longer lifespan compared to standard bearings, which is crucial for the forces encountered during pedaling. It's an ideal direct replacement for various bottom bracket systems, ensuring smooth and reliable crank rotation.This bearing features ABEC-5 precision, Grade 10 chromium steel balls, and dual-lip labyrinth (LLB) seals for enhanced protection against contaminants. It comes pre-filled with high-pressure waterproof synthetic grease, ensuring durability and consistent performance in diverse riding conditions.## Features* Angular Contact (A/C) design to manage both radial and axial loads for increased efficiency and lifespan* ABEC-5 precision for smooth rotation* Dual-lip labyrinth (LLB) seals to protect against water and grit* Pre-filled with Mobilux NGLI 2 high-pressure waterproof synthetic grease* Red seal facing outwards installation for optimal performance## Specs* Outer Diameter (OD): 37mm* Inner Diameter (ID): 24mm* Width: 7mm* Material: High-carbon chromium steel races with Grade 10 chromium steel balls* Enduro Part #: BB MRA 2437 LLB-BK* Compatibility: Direct OEM replacement for most BB86/92, Trek BB90/95, and all Wheels Mfg PF30 Outboard and BB30 Outboard BBs* Sold individually