Collection: Bottom Bracket

The bottom bracket may not be the most visible component on your bike, but its importance to your riding experience cannot be overstated. It is the bottom bracket that connects the crankset to the frame and allows the crank arms and chain to move smoothly – and it directly influences how much power is transferred to the rear wheel. A good bottom bracket reduces friction, increases stiffness and ensures a more efficient thread. Whether you ride road, triathlon, gravel or exercise cycling, a well-functioning bottom bracket is therefore a significant investment in both comfort and performance.

At Transition Zone you will find bottom brackets from some of the most recognized manufacturers in the cycling world – including Shimano, SRAM, Token and CeramicSpeed. Whether you are looking for standard solutions or top-performance with ceramic bearings, we have bottom brackets to match your needs and your bike.

There are many different types of bottom brackets, and it is important to choose the right one – both for your frame and your crankset. Different frames use different standards, such as BSA (thread), PressFit, BB30, PF30 or DUB, and it is crucial to find a bottom bracket that fits exactly. At Transition Zone, we are happy to help you find the right model to avoid creaking noises, unnecessary wear or loss of power.

The quality of the bearings in the bottom bracket plays a big role in how efficient and durable it is. CeramicSpeed is known for their ceramic bearings, which minimize friction and provide maximum power transfer – something that is especially appreciated by triathletes and competitive cyclists, where every watt counts. Token offers both standard and high-end bottom brackets for different frame standards, while SRAM, with their DUB solutions, has created a bottom bracket that combines light weight with high stiffness. Shimano delivers reliable bottom brackets that are known for their long durability and compatibility with a wide range of cranksets.

If you're after speed, lower friction and a more responsive drivetrain, then the bottom bracket is an obvious place to upgrade. Riders who compete in triathlons or longer road races in particular will notice a difference when power transfer becomes more efficient and energy is not lost in the movement between the pedal and the rear wheel. Upgrading to a bottom bracket with ceramic bearings – such as those from CeramicSpeed – can be the small detail that makes a big difference to your times.

At the same time, it is worth mentioning that a good bottom bracket also minimizes the risk of creaking noises and annoying vibrations, which can occur due to poor fit or worn bearings. By choosing a high-quality bottom bracket, you ensure a more stable and silent experience – even when the load is greatest. It gives you a better feel for the line and the opportunity to keep the focus on your performance, rather than on the equipment.

Bottom brackets are exposed components that must withstand sweat, moisture, dirt and vibrations – often over many thousands of kilometers. Therefore, both the choice of materials and construction are crucial. The bottom brackets you find at Transition Zone are all from manufacturers who specialize in just that: delivering solutions that last – even under extreme conditions. This applies to Shimano's sealed bearings, Token's precision-made components and CeramicSpeed's uncompromising focus on low friction and long service life.

Whether you service your bike yourself or have it done professionally, the bottom bracket should be checked regularly. Dirt and moisture can affect the bearings over time, so it's a good idea to replace the bottom bracket or bearings when you notice play, noises, or a general "sluggishness" in the cable.

At Transition Zone, we're here to help you find the perfect bottom bracket for your bike and your needs – whether you're looking for the lightest, most durable, or least friction-free solution. And we don't compromise – with guidance or equipment.