Colnago created the ThreadFit82.5, aka ThreadFit, to make their oversized bottom brackets more durable. The T4530 bb threads into those 45mm diameter, 82.5mm wide shells and allows you to install 30mm diameter spindle cranks into your Colnago.
The cups have CeramicSpeed bearings pressed in, and then are threaded into the bb. There are two bearing options. The Standard Bearing has CeramicSpeed Balls and hardened-steel races. The Coated Bearing has the same balls running on a 3-micron thick coating placed on top of those hardened-steel races, which makes them faster and more durable.
In The Box
- 2 cups with bearings installed.
- 2 1mm spacers.
- 2 0.5mm spacers.
- 2 dust covers.
- Spacer tube.
- 10ml syringe All Round Grease.
- Sticker sheet.
- Installation tool.
T45 was designed by Colnago to provide the design benefits of oversized bb shells and the repair benefits of threaded bottom brackets. These cups and bearings adapt the shell so it is compatible with Shimano, Rotor, and others.
The drag “cost” of our CeramicSpeed Standard Bearings is 0.3-.04 watts. That’s a reduction of 75% compared to stock bottom brackets. This is the result of hardened-steel races combined with CeramicSpeed balls that are 100% smoother and 15% harder than the ceramic competition. They also last longer.
The CeramicSpeed Coated Bearings last even longer and feature even lower drag. Life increases by 60% and drag drops by 50% compared to our Standard.
All Round Grease comes applied to the bearings. It can be replaced for lower drag TT and Track Grease, or higher durability LongLife Grease, which adds a bit of drag but stays in when riding through messy conditions.
Ceramic Speed BB's are guaranteed for 4 Years