Shimano BB-UN300

Shimano BB-UN300 Bottom Bracket

The Shimano BB-UN300 price in Kenya is Ksh 3,500. The Shimano BB-UN300 is a reliable, high-performance square taper bottom bracket designed for a wide range of bicycles, including trekking, city, and older road and mountain bikes. As a successor to the BB-UN26 and BB-UN55, it combines Shimano’s renowned quality with affordability, making it an excellent choice for cyclists seeking durability and smooth operation. Engineered for easy installation and minimal maintenance, the BB-UN300 ensures efficient power transfer and a comfortable ride across various terrains. Its sealed cartridge bearings protect against dirt, mud, and water, extending the component’s lifespan even in challenging conditions.

Features

• Sealed Cartridge Bearings: Maintenance-free design keeps out dirt, mud, and water for long-lasting performance.
• Chainline Stabilizer: Enhances chainline stability for smoother shifting and efficient pedaling.
• Three Structure Options: Available in Standard, E-type (for E-type front derailleurs), and K-type (for chain case compatibility).
• Aluminum Adapter: Lightweight and durable aluminum cups (left side) and aluminum/steel (right side) for reliable performance.
• Hollow Cr-Mo Axle: Provides strength and rigidity while keeping weight low.
• Easy Installation: Designed for fast, adjustment-free installation with proper tools (e.g., Park Tool BBT-22).
• Smooth Operation: Precision-engineered bearings ensure silky-smooth pedaling and efficient power transfer.

Compatibility

• Frames with 68mm BSA threaded bottom bracket shells.
• Cranksets for Shimano Tourney FC-TY501 (47.5mm chainline) and FC-M311/FC-M361 (50mm chainline).
• Road  and Mountain bikes.
• BB-UN300-E front derailleurs
• BB-UN300-K chain cases, featuring a 0.7mm axle offset for proper chainline.