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The CeramicSpeed Oversized Pulley System for Shimano replaces the cage on Ultegra / Dura Ace 10- and 11-speed mechanical groupsets to reduce friction by up to 60%. This is made possible by the larger 17T alloy pulley wheels that spin on high-precision ceramic bearings resulting in a savings of at least 2.4 watts.
- 17T alloy pulley wheels w/ ceramic bearings
- Carbon-reinforced polyamide cage
- Titanium mounting hardware
- Handmade in Denmark
- Efficiency claims verified by Friction Facts in Boulder, CO
- 4 year warranty
- Includes ceramic bearing oil
- Claimed weight is approximately 70 g
- Compatible with Ultegra/Dura Ace (6800/7800/7900/7970/9000/9070)
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
Ordered by Most Relevant First
Its worth it....
I think its worth the upgrade.
Drive train feels lot more smooth.
Only had it a week. But I do feel the difference.
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