IRD QB-55 JIS Square Taper Road Bicycle Bottom Bracket (Cromo/Silver - 68 x 115)

Upgrade Your Bicycle's Bottom Bracket with the Interloc Racing Design QB55 Cartridge BB - JIS Square, 68x115mm Optimize your bike's performance with the Interloc Racing Design QB55 Cartridge Bottom Bracket, engineered for durability, precision, and seamless integration. Crafted from materials and manufactured in Japan, this sealed cartridge BB ensures smooth pedaling and long-lasting reliability on all your rides. Materials & Construction: Designed with steel cups and sealed cartridge bearings, the QB55 offers superior corrosion resistance and minimal maintenance. The durable construction provides excellent load distribution and reduces wear, ensuring consistent performance over thousands of miles. Performance & Engineering: Featuring high-performance sealed bearings, the QB55 minimizes friction for a more efficient power transfer. Its robust sealing technology prevents dirt, water, and debris from entering, maintaining optimal bearing function even in challenging conditions. The 115mm spindle length and 68mm shell width strike the perfect balance for versatile use across various bike frames and riding styles. Components & Technology: Equipped with traditional JIS (Japanese Industry Standard) square taper interface and 2-degree crank arm taper, the QB55 ensures a secure fit and compatibility with a wide range of cranksets. The 33.6mm shell ID and 24tpi thread compatibility make installation straightforward, providing a snug, wobble-free connection. Style & Use Case: Ideal for road bikes, mountain bikes, and touring bikes, the QB55 Cartridge BB delivers reliable power transfer and enhanced pedaling efficiency. Its classic design and precision engineering make it a favorite among cyclists seeking replacement parts that perform under demanding conditions. Innovative Features: Made in Japan, renowned for exceptional manufacturing standards, the QB55 stands out with its craftsmanship, ensuring longevity and consistent operation. Its sealed bear

• sealed cartridge bearings constructed with durable steel cups for long-lasting performance and reliability in cycling applications.
• Designed with a traditional JIS square taper interface, compatible with a wide range of cranksets for seamless installation and secure fitment.
• Features a 68mm shell width and 115mm spindle length, optimized for BSA (English) threaded bottom brackets, ensuring precise fit and smooth power transfer.
• Manufactured in Japan using advanced materials and engineering standards, delivering high performance and consistent durability under demanding cycling conditions.
• Ideal for upgrading or replacing worn bottom brackets, offering enhanced efficiency, reduced friction, and superior longevity for road, mountain, or hybrid bikes.