Description Features lifted straight from the top of the line Dura-Ace model and a much friendlier price.
The largest difference between Shimano's two Rear Derailleurs is that this Ultegra version offers a more durable but slightly heavier alloy body in lieu of a featherweight carbon construction. It also uses standard pulley bushing instead of bearings.
Where the RD-6700 really shines is its updated, wider-than-ever parallelogram plates which offer increased stiffness and incredibly accurate shifting under load. A longer cage allows it to handle a 28t max. cog to accommodate the popular 11-28 cassette. 189g (short cage).
Articles A description of the different types of bottom brackets, the bearings for bike cranks.
You wanna go fast? Join the ceramic revolution!
An introduction to road bike cranksets.
