Description

FSA BB392 Bottom Bracket for 30mm Cranks on PressFit BB89.5 / BB92 Frames

The ultimate conversion solution to install FSA BB392EVO or alternative 30mm spindle cranksets onto standard Shimano PressFit (BB89.5 / BB92) MTB frames. Maximum smoothness, exceptional rigidity, and total protection against mud and water.

This premium bottom bracket by Full Speed Ahead (FSA) ensures a flawless mechanical pairing between frames featuring a 41mm internal diameter PressFit shell and modern MTB cranksets with oversize 30mm spindles. Equipped with high-precision sealed stainless steel cartridge bearings and CNC-machined alloy cups, it guarantees flex-free power transfer and outstanding durability in the most grueling riding conditions.

• Frame Compatibility: PressFit BB89.5 (89.5mm shell width) and BB92 (92mm shell width) with a 41mm internal diameter

• Crankset Compatibility: 30mm spindle (FSA BB392EVO and similar)

• Bearings: High-efficiency radial sealed cartridges

• Regular Price: € 56.00 | Special Price: € 49.90

In-Depth Description

Precision FSA Engineering: Maximize your MTB's rigidity by combining a PressFit shell with a 30mm spindle.

The FSA BB392 Crank to PressFit BB89.5/92 bottom bracket solves one of the most common compatibility hurdles in modern mountain biking. It allows riders to harvest the immense torsional stiffness of an oversized 30mm crank spindle (standard in BB392EVO systems) within a frame designed natively for the classic 41mm PressFit standard, which traditionally accommodates 24mm axles.

Premium Materials & Severe Weather Durability

FSA has engineered this bottom bracket to withstand the extreme stresses of Cross-Country, Marathon, Trail, and Enduro racing:

• Anodized Aluminum Cups: Precision CNC-machined to strict millimetric tolerances ensuring a flawless press-fit into the frame shell. This tight interface virtually eliminates the frustrating creaks that often plague press-fit systems under high torque.

• Total Environmental Shielding: The assembly features dual external protective seals paired with a durable center sleeve equipped with premium O-rings. This barrier completely isolates the precision bearings from moisture, dust, and frame-tube internal contamination.

High-Efficiency Sealed Bearings

The internal radial cartridge bearings offer a buttery-smooth, low-friction rotation. The premium grade of the balls and raceways allows you to translate every watt efficiently into forward drive, maintaining consistent spinning performance even after extensive periods of riding through deep mud, dust, and frequent bike washes.

 Technical Specifications

Important Installation Notes

CicloBottega Workshop Tech Tip:

To guarantee maximum bearing lifespan and prevent future creaking noises, the PressFit cups must be installed into the frame using a dedicated bottom bracket press tool and a light layer of high-quality lithium grease (or carbon-specific anti-seize paste, depending on whether your frame is Alloy or Carbon). Imprecise, misaligned installation can permanently damage the frame shell seats and ruin bearing smoothness.

Shipping & Warranty Terms

• Fast Courier Shipping: Safe, tracked express shipping. Add this item to your cart alongside other components to optimize your shipping costs or unlock free shipping upon reaching our store's minimum threshold!

• Official Warranty: Original FSA product backed by a 2-year official manufacturer warranty against defects in materials or workmanship.