Promax EX-1 External Sealed Bearings BSA 68/73mm Bottom Bracket for 24mm Cranks

Description

Upgrade your bike’s drivetrain with the Promax EX-1 External Sealed Bearings BSA Bottom Bracket – a premium component engineered for durability, performance, and seamless compatibility. Designed specifically for 24mm crank spindles and BSA 68/73mm shell frames, this bottom bracket delivers reliable power transfer and smooth operation for both professional riders and cycling enthusiasts.

Materials & Construction:

Crafted from high-strength, cold-forged aluminum alloy, the EX-1 features CNC-machined cups for precise fit and durability. Its dual-labyrinth bearing covers and precision sealed bearings provide excellent dirt and water resistance, ensuring long-lasting performance even in challenging riding conditions. The robust construction reduces maintenance needs and extends the lifespan of your bottom bracket.

Performance & Engineering:

Engineered for optimal power efficiency, the EX-1 offers ultra-smooth rotation thanks to its high-quality sealed bearings, reducing friction and enhancing pedaling efficiency. Its lightweight design, weighing only 102.9 grams, ensures minimal impact on your bike’s overall weight, while maintaining strength and integrity during intense rides or trail pursuits.

Components & Technology:

Compatible with multiple spindle interface options including Shimano Hollowtech II, FSA MegaExo, FSA MegaExo Light, and RaceFace EXI, the EX-1 provides versatile applications across a wide range of cranksets. Its sealed bearing technology guarantees dependable performance in wet, muddy, or dusty conditions, making it ideal for mountain biking, road cycling, and gravel adventures.

Style & Use Case:

Finished in sleek black, the EX-1 seamlessly integrates with any bike frame and aesthetic. Whether upgrading your mountain bike for trail rides, enhancing your road bike for efficiency, or prepping your commuter for maximum durability, this bottom bracket ensures smooth, silent operation and improved pedaling response under all conditions.

Innovative & Differentiating Features:

The Promax EX-1 stands out with its cold-forged alloy cups, CNC-machined precision, and dual-labyrinth bearing covers that shield against dirt and moisture. Its compatibility with various spindle standards and shell widths (68mm/73mm) makes it a versatile choice for many bicycle builds, providing a reliable upgrade over basic budget bottom brackets.

Key Features:

– Fits all 24mm crank spindles (Shimano, FSA MegaExo, RaceFace EXI)

– Compatible with BSA 68/73mm shell frames (English thread)

– Low weight at 102.9 grams for optimized cycling efficiency

– Durable, sealed bearing design for all-weather performance

– CNC-machined alloy cups for precise fit and longevity

– Sleek black finish enhances bike aesthetics

Upgrade to the Promax EX-1 External Sealed Bearings BSA Bottom Bracket for a smoother, more efficient ride. Perfect for mountain biking, road cycling, and gravel biking, this high-performance bottom bracket provides the durability, precision, and compatibility you need to take your cycling experience to the next level.

• High-quality CNC-machined alloy construction ensures durability and precise fit for long-lasting performance.
• Sealed dual-labyrinth bearing design provides superior protection against dirt, water, and contaminants, ensuring smooth pedaling in all conditions.
• Compatible with 24mm crank spindles and suitable for 68mm and 73mm BSA bottom bracket shells, offering versatile installation options.
• Engineered with cold-forged alloy cups and precision CNC machining, delivering enhanced strength and stiffness for optimal power transfer.
• An ideal upgrade over budget bottom brackets, compatible with Promax CF-2 and HF-2 cranks, combining reliability, advanced technology, and improved cycling efficiency.