TBT TBT bearings are made with ceramic balls and extremely hard races for very low rolling resistance and long-lasting performance. TBT is the name we have given to our special ceramic bearings because they are different than “standard” ceramic bearings. The ball bearings in our TBT bearings are ceramic so they are very, very round and very hard. They won’t deform and increase their surface area under the weight of a rider, which leads to more resistance and slows you down. The one problem with ceramic balls is they are very hard and easily damage standard races made of stainless or normal steel. Without a specially designed race, in a short time you’ll end up with a lot more friction than standard set of sealed bearings. To fix the problem of soft races, we coat our steel races in titanium nitride. The titanium nitride coating is serves two functions – it protects the races from corrosion from the balls themselves. Titanium nitride is very hard so the ceramic balls don’t damage the races as easily as non-treated races. In addition, the coating protects the steel from corrosion so TBT bearings can be used year-round without any worries. When compared with standard bearings, TBT bearings are lighter and have less friction so if you are looking for an edge, these are the bearings you want. This BB can use Shimano Crank and Sram GXP Crank , both use, Available and Ready stock at Bukit Puchong Bike shop, whatsapp me more about Detail. The Tiramic version utilises Solid ceramic balls with Titanium coated bearing surfaces for smooth running, these are lighter than steel balls and proven to offer less transmission resistance. Product Data Bottom Bracket Type: Press fit 41MM Bottom Bracket: BB86 BB89.5 BB92 Road: Yes MTB: Yes Commuter: Yes Touring: Yes Cyclocross: Yes Time Trial: Yes Call - 012 696 0321 Vince