Kogel T47i Corrosion Resistant Bottom Bracket
When every watt counts, the T47i Bottom Bracket gives smoother operation, better efficiency and higher speeds with every pedal stroke, along with exceptional durability, especially in wet conditions.
Built by hand in Texas, it features Kogel’s new Kogel CR bearings, built with Kogel’s premium ceramic balls, which are more symmetrical with stricter tolerances than steel ones, and proprietary hardened stainless steel races. Stainless steel is typically softer than carbon steel but to counter this Kogel has made its stainless steel 20% harder, to bring bearings made with the material in line with the brand’s carbon steel ones.
This results in lower friction, more efficient power transfer and a smoother ride, as well as inbuilt corrosion resistance that won’t wear the way a coating would. The result of two years of development, the custom stainless steel race has been specifically treated and hardened to last, with consideration to the rigours a wet weather ride will place on the bottom bracket.
The BB stands up to heavy use without deformation or lost efficiency and is crafted with a choice of specifically tailored seals that keep grease in and the elements out. The road seals are engineered to offer the lowest possible resistance and reduce drag, allowing you to deliver your best performance without compromise.
The cross seals are built to protect against mud, dirt and water entering in the course of your MTB, gravel and CX ride, ensuring the bottom bracket will perform at its best, delivering silky smooth action and helping you to harness every watt, with long lasting performance and reliability. They lose just 0.5w compared with using the road seals on the bottom bracket.
- A hand built bottom bracket that uses ceramic balls on stainless steel races
- The stainless steel in the Kogel CR bearings is 20% harder than typical stainless steel
- Especially made to resist corrosion from wet conditions
- Made for installing a crank on a T47 frame with either a 68mm (T47 External), 86.5mm or 85.5mm (T47 Internal) wide BB shell, or on a T47a frame with a 79mm width for Cervelo
- No adapters required
- Choice of black road seals (dry conditions) for maximum efficiency or red cross seals (wet conditions) for maximum protection
- Seals are user replaceable and swappable
- Comes with a 3-year, Very Few Questions Asked policy
