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Entirely developed, designed, and produced in Denmark by CeramicSpeed, the Oversized Pulley Wheel System for SRAM eTap is a huge technological advance for the cycling industry. Matching the highest quality materials with a unique design, the OSPW System delivers lower friction and longer lifetime, improving your competitive advantage. Thanks to the OSPW System for SRAM eTap, the power savings over OEM pulleys start at 40%, and the CeramicSpeed Bearings inside guarantee 3-5 times greater longevity compared to commonly used standard pulleys on the market. The watt savings with a CeramicSpeed OSPW System for SRAM eTap start at 1.6 watts. The OSPW system for SRAM eTap derailleurs is compatible with up to a 32-tooth cassette size and with both short cage & WiFli derailleur bodies. The product is for 11-speed eTap and is not compatible with 12-speed SRAM eTap AXS. If you have the updated 11-speed SRAM eTap derailleur featuring the orbit clutch, you will need the CeramicSpeed OSPW System for SRAM eTap AXS derailleurs. - The overall power savings of the OSPW System for SRAM eTap commonly reach 40%-60% over a stock setup. - The oversized pulley wheels have a lifespan that is 3-5 times longer than the commonly used standard pulleys on the market. - The OSPW system for SRAM eTap derailleurs is compatible with up to a 32-tooth cassette size and with both short cage & WiFli derailleur bodies. The product is for 11-speed eTap and is not compatible with 12 speed SRAM eTap AXS. - This 3D-printed titanium version of the OSPW System comes with our CeramicSpeed Coated Bearings for even longer service life and lower friction. In The Box: - Oversized Pulley Wheel System - CeramicSpeed Bearing Oil in 15 ml dropper bottle - Sticker sheet - IMPORTANT: When traveling, please remember to dismount your entire rear derailleur with an Allen key, as the OSPW System will not fit safely in most bike travel bags and could be damaged if left on.

This is an updated version of the 3D-Printed Ti OSPW for Shimano 9100/8000. This new design has an integrated stop tower for easier mounting. The CeramicSpeed Oversized Pulley Wheel System has been proven to be the fastest pulley system in the world, providing energy savings starting at 2.4 watts over standard Shimano systems. The OSPW System for Shimano 9100/8000 is an industry-leading product, chosen by many of the world's leading cycling teams and professional triathletes. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimization of the rear derailleur, the upper and lower oversized aluminum pulley wheels are fitted with coated CeramicSpeed Bearings for even longer lifetime and lower friction. Please note: The 9100/8000 system is not compatible with Ultegra 8000-GS or 8050-GS (medium cage) derailleurs, nor is it compatible with clutch-equipped Ultegra RD RX800 & RX805. Please see CeramicSpeed's Shimano 11 Speed Pulley Wheels for a compatible upgrade. - The overall power savings of the OSPW System for Shimano 9100/8000 reach 30%-60%, or more in some cases, over a stock setup. - The oversized pulley wheels have 3-5 times longer lifetime than the commonly used standard pulleys on the market. - The Shimano 9100/8000 OSPW system is compatible with up to a 32-tooth cassette for both Dura Ace & Ultegra derailleurs. In The Box: - A complete 3D-printed 13-tooth/19-tooth OSPW System - CeramicSpeed Bearing Oil in 15ml dropper bottle