Tripeak BSA 68mm 3-in-1 Ceramic Bottom Bracket

One Bottom Bracket. Three Crank Standards.

The Tripeak BSA 68mm 3-in-1 Ceramic Bottom Bracket has been developed for road bikes using the proven BSA 1.37" threaded bottom bracket standard. Built around Tripeak's innovative 3-in-1 Core System, it allows a single bottom bracket to support Shimano Hollowtech II, SRAM DUB and Rotor 3D+ cranksets, making future drivetrain upgrades simpler than ever.

Featuring precision G5 Ceramic Bearings housed in CNC-machined 6061 aluminium cups and an aluminium centre sleeve, the system delivers exceptional rotational efficiency, long-term durability and the secure, creak-free performance that has made threaded bottom brackets the preferred choice for riders and mechanics alike.

Key Features

• Designed for BSA 68mm threaded road frames

• 3-in-1 Core System compatible with three crank spindle standards

• Compatible with Shimano HTII (24mm), SRAM DUB (28.99mm) and Rotor 3D+ (30mm)

• Premium G5 Ceramic Bearings

• Also available with P05 Precision Steel Bearings

• CNC-machined 6061 aluminium cups

• CNC-machined 6061 aluminium centre sleeve

• Includes all required adapters and spacers

• Standard 16-notch bottom bracket tool interface (44mm OD)

• Lightweight 79g (G5 Ceramic) or 81g (P05 Steel), excluding adapters

Why the 3-in-1 Core System?

Most bottom brackets are designed around a single crank spindle diameter. Change your crankset and you'll often need to replace the bottom bracket as well.

Tripeak's 3-in-1 Core System removes that limitation.

Using interchangeable internal sleeves and adapters, one bottom bracket accommodates:

• Shimano Hollowtech II (24mm)

• SRAM DUB (28.99mm)

• Rotor 3D+ (30mm)

That means you can upgrade or change cranksets without replacing the entire bottom bracket. Simply install the appropriate adapters and you're ready to ride.

It's a smarter system for riders and a more practical solution for workshops.

Why Choose Ceramic Bearings?

Ceramic bearings are designed to reduce rotational resistance while maintaining exceptional durability.

Tripeak's ceramic bottom brackets use G5-grade ceramic balls running on precision-machined hardened steel races. The result is exceptionally smooth rotation, low friction and consistent performance in all riding conditions.

For riders who prefer a steel bearing option, the same bottom bracket is also available with Tripeak's precision P05 Steel Bearings, manufactured to extremely tight tolerances for excellent durability and smooth running.

Whether you're racing, training or simply looking for the most refined drivetrain possible, both options are engineered to deliver long-lasting performance.

Precision Engineering

Performance isn't achieved through ceramic balls alone.

Every Tripeak bottom bracket is manufactured to exceptionally tight tolerances, ensuring accurate bearing alignment and smooth operation from the moment it's installed.

The CNC-machined 6061 aluminium cups and 6061 aluminium centre sleeve provide excellent strength while maintaining low weight, creating a rigid and durable interface between the frame and crankset.

Why Choose BSA?

BSA remains one of the most trusted bottom bracket standards in cycling. The threaded design provides a secure mechanical interface between the frame and bottom bracket, helping to minimise movement, reduce the likelihood of creaking and simplify servicing.

It's a proven standard that combines reliability, easy maintenance and excellent long-term durability.

Compatibility

Frame Standard

• BSA 1.37" Threaded

• Shell Diameter: 34.8mm

• Shell Width: 68mm

• Road Bike

Crank Compatibility

• Shimano Hollowtech II (24mm)

• SRAM DUB (28.99mm)

• Rotor 3D+ (30mm)

Included in the box:

• 2 × 30mm adapters

• 2 × 28.99mm adapters

• 1 × 28.99mm drive-side spacer

• 2 × 24mm adapters

Technical Specifications

• Frame Standard: BSA 1.37"

• Shell Diameter: 34.8mm

• Shell Width: 68mm

• Bearing Options: G5 Ceramic or P05 Steel

• Cup Material: CNC Machined 6061 Aluminium

• Centre Sleeve: CNC Machined 6061 Aluminium

• Tool Interface: 16-Notch

• Outside Diameter: 44mm

• Weight:

  • G5 Ceramic: 79g (without adapters)

  • P05 Steel: 81g (without adapters)

• Colour: Black

Why We Stock It

The Tripeak BSA 3-in-1 Bottom Bracket offers the best of both worlds. The proven reliability of a threaded BSA interface is combined with the flexibility of Tripeak's innovative 3-in-1 Core System, allowing riders to move between Shimano, SRAM and Rotor cranksets without replacing the bottom bracket. Add precision ceramic bearings, CNC-machined aluminium construction and future-proof compatibility, and it's one of the most versatile bottom brackets available for modern road bikes.

Proven at the Highest Level

Tripeak components are trusted by riders competing at the highest level of professional cycling, including the XDS Astana Team and Lidl–Trek. Developed to meet the demands of elite racing, the 3-in-1 Core System combines race-ready efficiency with the flexibility modern riders expect.