Road Cyclocross Bicycle Bike OSPW Oversized Derailleur Pulley Wheel System for Shimano R9100/R8000 use 12t top+16t Bottom Pulley in Black/Red/Gold Colors

Price: $89.95
(as of May 25, 2025 07:03:09 UTC – Details)

WHY USING OVERSIZED PULLEY WHEEL CAGE-Upgrade your drivetrain for ultimate efficiency and superior performance.KCNC Wheel Bearings reduce friction, which gives you a lower rolling resistance.Upgrading your wheel bearings to oversized pulley will maximize the return you get from your energy.
THE EFFICIENCY OF OSPW-The Oversized Pully Wheel(OSPW) system reduces friction in the pulleys by 45 % and for your optimised performance.The overall power savings of the OSPW System reach 30%-60%, or more in some cases, over a stock setup.
NARROW WIDE PULLEY&DURABLE CHAIN RETENTION-The OSPW for Shimano features a narrow wide tooth profile to ensure durable chain retention.The system consists of Top 12t & Bottom 16t alloy pulley wheels fitted with low friction bearings and a lightweight cage made from 7075 Alloy.Coated bearings prolong the lifetime even further.The oversized pulley wheels have 3-5 times longer lifetime than the commonly used standard pulleys on the market.
COMPATIBILITY-The OSPW system is compatible with Shimano Ultegra R8000/Dura Ace R9100.The Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world, providing energy savings starting from 2.4 watts.Almost have the same efficiency ratio with Ceramicspeed.
SPECIFICATION-Top Pully :12T with sealed bearing / Bottom Pully :16T with sealed bearing / Matiral : AL7075 Fully CNC/ Color:Black,Red,Gold available / Weight : approx.60grams / For Shimano Ultegra R8000/Dura Ace R9100 use