MR314357-2RS Bottom Bracket Bearing - 31 x 43.5 x 7 mm

The EasyBikeParts MR314357-2RS is a high-quality sealed chromium steel bearing, designed for smooth performance and durability. Built to the non-standard 31 x 43.5 x 7 mm bottom bracket size, this bearing delivers reliable operation and excellent protection against dirt, moisture, and wear — ideal for high-performance cycling applications.

Key Features:

• Sealed Design (2RS) – Double rubber seals provide superior protection against dust, dirt, and water, ensuring long-lasting performance.
• Durable Construction – GCR15 chromium steel races and balls give excellent hardness, strength, and resistance to wear under heavy pedalling loads.
• Smooth Rotation – Precision-engineered and packed with SINOPEC HTHS high-temperature, high-shear grease to reduce friction and extend component lifespan.
• Direct Replacement – A straight swap for worn bottom bracket bearings requiring the 31 x 43.5 x 7 mm size.

Specifications:

• Bearing Type: MR314357-2RS
• Dimensions: 31 x 43.5 x 7 mm (31 mm ID / 43.5 mm OD / 7 mm width)
• Material: Chromium Steel GCR15 (races and balls)
• Grease: SINOPEC HTHS bearing grease or equivalent
• Seals: 2RS (double rubber seals for added protection)
• Application: Bottom bracket