ENDURO BEARINGS Mr 21531 llb - abec 3 (radial) - 21,5x31x7

MR 21531 LLB - ABEC-3 Radial Bearing (C3 Clearance) – 21.5mm x 31mm x 7mm Discover the durability and precision of our MR 21531 LLB radial bearing, designed with deep-groove raceways and grade 10 balls for smooth operation. Featuring dual-lip labyrinth (LLB) seals and 90% fill of high-pressure waterproof grease, this ABEC-3 bearing is built to withstand the rigors of daily cycling and harsh environmental conditions. Its unique size makes it ideal as a front hub bearing, particularly for older WTB 20mm hubs, and it has also been used in Isis bottom brackets. Part of our Enduro line, these bearings are available in high-carbon chromium steel, 440C stainless steel, ceramic-hybrid, and XD-15 with ceramic or stainless steel balls. Engineered with the deepest groove races to accommodate larger balls and equipped with micro-groove dual-lip seals for superior element protection, ensuring long-lasting performance.