ENDURO BEARINGS Mra 1728 llb a5 - abec 5 (angular contact) - 17x28x7

MRA 1728 LLB - ABEC-5 Angular-Contact Bearing (C3 Clearance) - 17mm x 28mm x 7mm Upgrade your cycling performance with the MRA 1728 LLB angular-contact bearing, designed primarily for hub applications and suitable as a pivot bearing. Featuring ABEC-5 precision, this bearing boasts deep-groove race design, Grade 10 balls, and dual-lip labyrinth (LLB) seals that withstand harsh elements and daily riding stress. It is filled with 90% Mobilux NGLI 2 high-pressure, waterproof synthetic grease for optimal protection. When installed correctly (black seal facing inward) and properly adjusted, Enduro Angular Contact bearings ensure all balls engage evenly, distributing force and extending bearing lifespan. Available in high-carbon chromium steel, 440C stainless steel, ceramic-hybrid, and XD-15 with ceramic or stainless balls, these bearings are engineered with deep groove races to accommodate larger balls and feature dual-lip seals for superior element protection.