The pulley wheels are aluminum for a more durable design, and the bearings are serviceable and come with a special grease. The pulleys that will actually fit on your derailleur are determined by the generation of your group set. In our experience, these are the best-shifting after market pulleys available, past or present. The pulley wheels are aluminum for a more durable design, and the bearings are serviceable and come with a special grease. The special design helps guide the chain in its ideal line and perform super smooth shifting. For less than $50. Our Gen2 pulleys work well with it. The results showed the Shimano Acera as the least efficient pulley of the group, consuming 1.370 watts/set. CeramicSpeed Oversized Pulley Wheel System This CeramicSpeed Oversized Pulley Wheel System is developed for performance optimisation, and the watt savings start at 2.4 watts. But, derailleur pulleys are an easy bearing application because the forces are low, so you don't need to worry much about ceramic vs. metal and ABEC grades, etc. I created this short derailleur pulley buyers guide to help, so let's have a look at what fits best on which derailleur: The monikers for different price and quality of group sets has not changed in many years: everybody knows Dura Ace, Ultegra and 105 for road bikes and XTR, XT and SLX for mountain bikes. Cnc machined pulley wheels with ceramic bearing. This movement allows the pulley to settle into an optimum position under each cassette cog. Numbers in the 8000 determine the latest generation Ultegra. Sram road groupos that use a front derailleur are an easy selection, both the 10 and 11 speed sets work with the hybrid ceramic pulleys or the Not For Instagram set. The Ceramitech bearings are in-molded for absolute security and durability as well as ease of maintenance. In stock and ready to ship. The cage is made from carbon fibre and reinforced PA while the 17-tooth pulley wheels are made from aluminium and mounted with high quality CeramicSpeed bearings. In order to achieve a better ground clearance for the long chain that needs to wrap around that huge 50 tooth cassette, Sram increased the size of the bottom pulley to 14 teeth. OPWS use large-diameter sprockets to guide the chain—typically 15-17 teeth, compared to 11 teeth on a stock Shimano or SRAM rear derailleur. Leading industry wheel dynamics expert and CEO of Edco Wheels , Paul Lew, backs this up and reckons it makes ceramic bearings a poor choice for hubs and headsets, also adding that they offer no weight savings and are only beneficial in environments where high rpm (revolutions per minute) are required. Recently Shimano started synchronizing the Road and Mountain classification: R9100 is Dura Ace, M9100 is XTR. The 12 tooth system is very sensitive, we recommend to stick the 12/12T combo, but you can fit a 12/14T pulley set in the cage if you want. The pulley wheels are the fastest spinning bearings on your bike. All campagnolo 11 speed systems run on our hybrid or full ceramic pulley set. The idea (in addition to less friction supplied by ceramic bearings) is that the larger wheels put more gradual bends in your chain, which allows it to flow through the derailleur and jockey wheels … Jockey Wheels - Groupsets & Components Derailleurs Rear Jockey Wheels Please send a message to info@kogel.cc and we will custom build a set for you. Pick the Gen2 with14/14T for low friction and a look that will make people rubber neck when you zoom by. In our experience, these are the best-shifting after market pulleys available, past or present. The one by eleven systems that are very popular on gravel bikes and mountain bikes that go a few years back run on the Gen2 12/14 oversized pulleys. Each KCNC pulley wheel is equipped with a high quality hybrid ceramic cartridge bearing. Frictionfacts.com is the place to get numbers on this and other upgrades. Recently we introduced new oversized derailleur pulleys for Shimano and Sram Wifli derailleurs. Perfect OE replacement for Shimano road and mountain derailleurs … Jockey wheels guide the chain through the rear derailleur. © Copyright 2020 Kogel Bearings, All rights reserved, oversized derailleur pulleys for Shimano and Sram Wifli derailleurs, 12/12T Oversized derailleur pulleys for Shimano 11 speed derailleurs, 12/14T Oversized derailleur pulleys for Sram 1x11 speed, Eagle ceramic derailleur pulley set by Kogel. Each cog set features DELRIN® 510GR construction, a fiber reinforced polymer specially suited to high strength situations where resistance to deflection is paramount, such as every time you shift. We ask for your understanding as you may experience delivery delays. Your choice is simple; use the 11 tooth pulleys with cross seals. Get the best deals on CeramicSpeed Bicycle Rear Derailleur when you shop the largest online selection at eBay.com. Pick the 12/12T set of the second generation pulleys for best results. Just drop us an email or call. Machined from solid … Our bearings don't require the constant maintenance of ceramic bearings, saving you time and money. Call Us Today (530) 823-2900. The cage is made from carbon fibre and reinforced PA while the 17-tooth pulley wheels … For less than $50. $59 $34. That really can save you more than a watt. Longevity - bearings are what wear out on pulleys, not the teeth or wheel itself; I've had stock plastic pulleys last 7-8 years (I'd be shocked if the KCNC pulleys actually last any longer than what you have. For this reason, the 11 tooth pulleys work best. Campagnolo chooses to put ceramic bearings in all of its wheelsets from mid-range upwards. Less Maintenance. Full ceramic bearings are standard on AITA ceramic jockey wheel/pulley of the rear derailleur. The Flattop chain used is these road groups has a very narrow internal width. The first time I ever spun a Tiso full-ceramic-bearing jockey pulley was at Interbike a couple years ago. When the chain moves through the jockey wheels, a small amount of energy is required to turn the actual wheels, and reducing this energy is what Oversized Pulley Wheel Systems (OPWS) aim to do. Even with … Features: Ceramic … The result is faster smoother shifts and a quieter drivetrain. If ordering with a bunch of other zfc goodies i can normally work in a small discount on ceramic speed pulley wheel … The 12 speed derailleurs of the latest Shimano generation have  an amazing clearance for oversized pulleys. ZrO2 full ceramic races build the strength and Si3N4 grade 3 ceramic balls deliver the results. Based on the data, the CeramicSpeed pulley is the most efficient pulley, consuming 0.033 watts/set. The Narrow wide profile of Gen1 does not play nice with the Campagnolo chain. These derailleurs work best with the 12 tooth pulleys. And our 12/14T Oversized derailleur pulleys for Sram 1x11 speed are perfect for your SRAM 11-speed mtb drivetrain. You have the BBInfinite bottom bracket with Ceramitechs already, and you've experienced the tremendous gains. Choose from our selection of pulley wheels, including V-belt pulleys, round-belt pulleys, and more. The Campagnolo ceramic BB lower pulley tested very efficient (it is the second most … Each KCNC pulley wheel is equipped with a high quality hybrid ceramic cartridge bearing. Not worth it. It's time for another step forward toward your goal. Our 12/12T Oversized derailleur pulleys for Shimano 11 speed derailleurs work like a dream for chain retention. Cermaic Bearings offer minimal resistance in this pulley wheel set from Legit. Few other companies are offering oversized pulley wheels and its OSPW are, by and large, the pulleys of choice in the pro peloton. Dura Ace R9100, Ultegra R8000 and 105 R7000 series: Our 12 tooth pulleys are slightly larger than the stock Shimano pulleys. CeramicSpeed Oversized Pulley Wheel System. Quality It also scored 9.2 out of 10 in the quality rank check, so you can be pretty confident that CeramicSpeed Oversized Pulley Wheel … The advantages of using a ceramic bearing in the rear derailleur's pulleys are the most … We love talking with fellow cyclist helping simplify your buying process. Just ask for the 10 speed setup with your order and we will make sure they ship correct for your derailleur. All models were tested as a set of two pulleys (typically one upper, and one lower pulley). Installing the 12 tooth pulleys on these derailleurs will cause interference between the chain and cage. Frictionfacts.com is the place to get … Summary of Results. 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