What bottom bracket does ultegra use?

What bottom bracket does ultegra use?

The Shimano Ultegra 6800 bottom bracket is a threaded BB designed to work with Hollowtech II style Shimano Road chainsets. The TL-FC25 bottom bracket installation tool is not included.

Can you service a Shimano bottom bracket?

With the BB bearings out of the bike we can start to clean and regrease them. Shimano don’t recommend that you service your BB bearings mainly because you stand a reasonable chance of damaging the seals taking the bearings in and out of the cups. So take this first step really easy.

How do I know what size bottom bracket to buy?

To find out the size of bottom bracket needed, measure the inside of the bottom bracket shell in your frame, it will be 73mm, 70mm or 68mm. Some older frames may have Italian threaded bottom brackets, instead of the more modern English.

What is hollowtech bottom bracket?

The concept of HOLLOWTECH II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance.

How long does a Shimano bottom bracket last?

As for a bottom bracket, on the low end, maybe 5000 miles. The basic Shimano one most people use (UN51/55/similar) can reasonably expect 10k+ miles. But sometimes you get unlucky and get a bottom bracket that lasts maybe 500 miles. You may have just gotten a lemon.

How long should a bottom bracket last?

Simple rule is (unless you’re starting a long trip) “if it ain’t broke don’t fix it”. Do normal maintenance, keep things properly lubed and your BB should last for another 4,000 miles or more.

How often should I grease my bottom bracket?

Around the three month mark is normally enough time, even in the best conditions for dirt to work its way into the small gaps and contact points around the crankset and bottom bracket area. In the summer in SoCal, I probably do it more like every four weeks of solid riding on a bike.

Is Alivio a hollowtech?

Two-piece forged aluminium construction with a smooth and precise shifting performance due to its Hyperdrive technology. Features: Works with Hollowtech bottom bracket (not included) Crank Construction: Hollowtech.

What’s the difference between Shimano and Ultegra bottom brackets?

By improving upon the design of the previous Ultegra bottom bracket, Shimano was able to make the 6800 series Ultegra bottom bracket smoother and lighter than previous Ultegra bottom brackets while remaining completely backwards compatible with existing cranksets.

Can a 6800 Ultegra be used with a Hollowtech II crankset?

The new 6800 series Ultegra bottom bracket is completely backwards compatible with any Hollowtech II crankset, making it the perfect match for any cyclist. Backwards compatible with older Road Hollowtech II cranksets such as FC-6600, FC-5600, FC-7900, etc.

How much does a Shimano BBR60 bottom bracket weigh?

The BBR60 bottom bracket weighs in at a mere 77g, a whole 14g lighter than the 6700 bottom bracket which is due in part to the smaller bottom bracket cups. These smaller BB cups require use of the included TL-FC25 adapter to install and remove by simply attaching to your existing bottom bracket tool.

Can a BB Cup be attached to a bottom bracket?

These smaller BB cups require use of the included TL-FC25 adapter to install and remove by simply attaching to your existing bottom bracket tool. The new design also reduces friction by 50% compared to a 6700 bottom bracket by improving upon the seal design.