Cycling Bargains - Swinnerton Cycles CeramicSpeed Bottom Bracket - T4730 Internal 30mm Bottom Bracket Black (swinnerton-203651)
Cheapest | Lowest | Sale | Deal Price
Was £274.95, NOW £244.71 (11% OFF)
Available from Swinnerton Cycles.
Swinnerton Cycles CeramicSpeed Bottom Bracket - T4730 Internal 30mm Bottom Bracket Black
Product Description
T47 is a standard created by custom frame builders in the United States. Its threaded, has an inner diameter of 47mm, and is 86mm wide. It has the design benefits of being oversized and wide, but also the practical benefits of threads. This kit pairs those bbs with 30mm spindle cranks. The cups have CeramicSpeed bearings pressed in. 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 for greater durability and less friction still. In The Box 2 cups with bearings installed. 2 1mm spacers. 2 0.5mm spacers. 2 dust covers. Wave washer. Spacer tube. 10ml syringe All Round Grease. Sticker sheet. Installation tool. With the benefits of both oversized shells and the tight fit of threading, T47 has the best of both worlds. These cups and bearings make it possible to run stiff and light 30mm spindle cranks, like those from Rotor and FSAs 386EVO standard. Standard Bearings reduce drag by 75% versus stock bottom brackets, dropping down to 0.3-0.4 watts per set. This is the result of hardened-steel races rolling ceramic balls that are 100% smoother and 15% harder than the ceramic competition. They also last longer. Coated Bearings feature an even longer lifespan and even lower drag. Life increases by 60% and drag drops by 50% compared to our Standard. Applied to the bearings at the factory is All Round Grease. 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.
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