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OSPW for Shimano 9100/9150 and 8000 SS/8050 SS
This is an updated version of the Oversized Pulley Wheel System for Shimano 9100/9150 and 8000 SS/8050 SS. Mounting instructions for both this and the older version can be found under our Support section.
This new design has an integrated stop tower for easier mounting.
The CeramicSpeed Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world, providing energy savings starting from 2.4 watts over standard Shimano systems.
The OSPW System for Shimano 9100/9150 and 8000 SS/8050 SS is an industry-leading product chosen by many of the world's leading cycling teams and professional triathletes.
They feature a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to optimize the rear derailleur. The upper and lower oversized aluminum pulley wheels come with standard or coated CeramicSpeed Bearings.
Please note: The OSPW System for 9100/9150 and 8000 SS/8050 SS is NOT compatible with Ultegra 8000-GS or 8050-GS (medium cage) derailleurs, nor with the clutch equipped Ultegra RD RX800 & RX805. Please see our OSPW X for Shimano RX800/805 for a compatible RX800 & RX805. For a compatible upgrade for Ultegra 8000-GS or 8050-GS, please see our Pulley Wheels for Shimano, 11s NW.
Please note while there are design similarities, this OSPW is not compatible with the 12-speed Shimano 9200 or 8100 series derailleurs.
The Shimano 9100/8000 OSPW system is compatible with up to a 32-tooth cassette for both Dura Ace & Ultegra derailleurs.
The overall power savings of the OSPW System for Shimano 9100/9150 /8000 reach 30%-60%, or more in some cases, over a stock setup.
The oversized pulley wheels have 3-5 times longer lifetimes than the commonly used standard pulleys on the market.
The Shimano 9100/9150 and 8000 SS/8050 SS OSPW system is compatible with up to a 32-tooth cassette for both Dura Ace & Ultegra derailleurs.
Please note: The OSPW System for 9100/9150 and 8000 SS/8050 SS is NOT compatible with Ultegra 8000-GS or 8050-GS (medium cage) derailleurs, nor with the clutch equipped Ultegra RD RX800 & RX805. Please see our OSPW X for Shimano RX800/805 for a compatible RX800 & RX805. For a compatible upgrade for Ultegra 8000-GS or 8050-GS, please see our Pulley Wheels for Shimano, 11s NW.
What is Coated?
A lifetime warranty covers our coated products. The unique coating formula is a metallic layer that covers the bearing races and makes them 75% harder than steel. Thanks to this, they are highly resistant to corrosion, and the coating provides even lower friction than our standard bearings. Even if the bearing is contaminated with degreaser, water, or mud, the risk of bearing failure due to corrosion is negligible if you choose the coated version.
Installation of OSPW for Shimano 9100/9150 and 8000 SS/8050 SS
To get the best performance and shift from your OSPW System, a professional bike mechanic must have the system installed.
Below are two step-by-step installation guides on best installing the Shimano 9100/8000 OSPW System. One for the first version of the system with a stop screw and one for the newest design with an integrated stop tower.
When traveling, please remember to dismount your entire rear derailleur with an Allen key, as the OSPW System will not fit in most bike travel bags and could be damaged if left on.
Installation guide for the OSPW System with integrated stop tower:
Installation guide for the OSPW System with stop screw:
Maintenance of CeramicSpeed OSPW System for Shimano 9100/9150 and 8000 SS/8050 SS
Regarding the maintenance of your OSPW System, it is essential that you properly lubricate your bearings to ensure optimal performance and maximum longevity. Add oil by using the lubrication points on the back cage plate so that oil can penetrate the bearing. Do this when you lubricate your chain, if you have washed your bike or after riding in wet or muddy conditions.
SKU# 106316, 106315, 106201
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