Campagnolo Record 10 Carbon Rear Derailleur

"The bicycle world was quite literally stunned last year by the introduction of the Record 10-speed rear derailleur. It wasn't merely a modification or adaptation of some older design. Its design was completely new and utterly unique. And even though the addition of a tenth sprocket placed greater demands on it than on previous derailleurs, it performs even better than its forbearers. The upper body has also undergone a change and the parallelogram has been completely re-designed to shift even faster and smoother in every gear combination and every cycling situation. The cage has been re-designed and the rollers for the 9-speed and 10-speed have been standardized so now the only difference between them - aside from 9- vs. 10-speeds - is their dust cover. Indicative of Campagnolo's determination to pare grams wherever it responsibly could are the rear derailleur securing screws: now they're titanium. So is the spring holder for the cage. The adjustment screw has a new position on the lower body, which makes it easier to reach. There is a greater range of adjustment so more precise adjustments can be made. Min. sprocket-11, Max. sprocket-26, Cap. 27, Max. front diff. 14. Composite outer plate, lightened inner plate, Titanium hanger and pivot bolt, lightened upper body. Wt: 187g."