Bikone DCTech Press Fit BB30-73a (Shimano, Sram Options)

$139.00 AUD

Taxes included. Shipping calculated at checkout.

The Bikone DCTech Press Fit BB30-73a Bottom Bracket is a premium drivetrain upgrade designed for riders using BB30-73a asymmetrical press fit frames who want smoother pedalling, improved efficiency and long-term durability. Built with Bikone’s advanced Dual Cup Technology (DC Tech), this bottom bracket is engineered to improve bearing alignment, reduce friction and help eliminate common press fit issues such as creaking, rough rotation and premature bearing wear.

Available for Shimano 24mm and SRAM DUB 29mm cranksets, with a choice of ceramic or stainless steel bearings, it is a smart upgrade for performance-focused road bikes, gravel bikes, MTB builds, race bikes and commuter bikes.

This is an ideal option when replacing a worn BB30a-style bottom bracket, upgrading drivetrain performance or completing a professional bike service.

Designed for BB30-73a asymmetrical frames

The BB30-73a standard is commonly used on performance frames that require precise bottom bracket fitment and careful bearing alignment. Because asymmetrical press fit shells place unique demands on the bottom bracket interface, component quality and installation accuracy are critical.

The Bikone DCTech system is designed to create a stable, aligned and efficient interface between the crankset and frame, helping improve power transfer and reduce drivetrain noise under load.

Dual Cup Technology for smoother power transfer

Bikone’s Dual Cup Technology helps align both bearing cups accurately within the frame. This reduces unwanted movement between the bearings and crank spindle, helping create a smoother, quieter and more efficient drivetrain.

For riders pushing hard efforts during climbs, criteriums, gravel races or long endurance rides, improved bearing alignment can make the bike feel more responsive and refined.

Ceramic or stainless steel bearing options

Choose the bearing option that best suits your riding style:

Ceramic bearings are designed for riders seeking low-friction performance, smoother rotation and maximum efficiency. They are ideal for road racing, triathlon, criterium bikes, high-end gravel builds and riders chasing marginal gains.

Stainless steel bearings offer strong durability and dependable everyday performance, making them a great option for commuting, MTB, all-weather training and high-kilometre use.

Both options are built to handle Australian riding conditions including heat, humidity, dust, rain and rough road surfaces.

Crank compatibility

This bottom bracket is available for two popular crank spindle standards:

24mm Shimano cranksets
29mm SRAM DUB cranksets

This makes it suitable for riders using Shimano Ultegra, Dura-Ace, GRX and compatible Shimano road or gravel cranks, as well as SRAM DUB road, gravel and MTB drivetrains where the correct BB30-73a conversion is required.

Ideal for bike servicing and drivetrain upgrades

The Bikone DCTech BB30-73a bottom bracket is a strong choice for:

bottom bracket replacement
press fit creak repair
Shimano crankset installation
SRAM DUB crankset conversion
drivetrain servicing and tuning
gravel bike upgrades
road bike performance builds
MTB and commuter bike maintenance
full bicycle service and custom bike builds

For best results, professional installation is recommended. A qualified bike mechanic can inspect the frame shell, prepare the contact surfaces, install the bottom bracket correctly and set crank preload for smooth, long-lasting performance.

Built for smooth, durable performance

The sealed bearing design helps protect against water, dirt and road grit, extending service intervals and improving long-term reliability. Whether you are training on Brisbane roads, riding Queensland gravel or commuting daily, this bottom bracket is built to deliver consistent performance ride after ride.