Bicycle Ceramic Bearing Carbon Fiber 18T Pulley Wheel Set Rear Derailleurs Guide Wheel for Shimano 105/UT/Ultegra/DURA ACE

*Warning:The 105 kit series is divided into the new R7000 and the old 5800 and below models. Their applicable guide wheels are different. If your model is 105-5800 and below, please purchase the 5800 guide wheel. If your model is 105-R7000, please purchase the 105 guide wheel. The order of confirming the model is: 105 series, (...) modelDescription:Model: UT/105/6800/5800Upper pulley: LW-UT/105 (13T), 6800 (16T)Lower pulley: LW-UT/105 (18T), 6800 (17T)Difference:1.Bearing:LW-UT/LW-105 :Ceramic Bearing2.Surface GloLW-UT/LW-105 :Gold Plated SurfaceUT/105: Normal SurfaceThe use of reinforced carbon fiber board provides higher stability.Model: LW-UTApply to:SHIMANO 8000  SHIMANO 8050SHIMANO 8070  SHIMANO 9170SHIMANO 9150  SHIMANO 9100SHIMANO 8020  SHIMANO 8170Model:LW-105Apply to:SHIMANO 7000Model:R6800Apply to:SHIMANO R6800 R9000 R6870 R7900Model:R5800Apply to:SHIMANO SHIMANO 5800 SHIMANO 5700 SHIMANO 4700 SHIMANO 4600Features:1. Effectively increase chain power inertia2. Reduce chain friction and make the chain stable3. Strengthen the safety of the rocker support structure4. The speed is stable and fast5. Reduce the sound6. Smooth output riding efficiency7. Climbing, effortle, effective increase in cadence8. Using all ceramic non-resistance bearing, friction power consumption is reducedPay attention to the guide wheelSpeed LTWOO SPI-Shiman UT R8000 rear derailleur R8050 R9100 R9150 adopts 7 bright colored guide wheels 13T lower 18TThe product is updated in-house by certified LTWOO speed technicians, and the following LTWOO speed components are pre-installed:1x Shiman Ultega R8000 rear derailleur1xLTWOO Speed Shiman SystemThe LTWOO Super Speed Pulley System (System) was developed to meet the increasing demands of cyclists to improve drivetrain performance. Due to the extremely low friction of LTWOO high speed bearings and the unique design of the entire system, the system can optimize the overall efficiency of the drive system.OSPW system for Shiman 9100/9150 and 8000 SS / 8050 SSThis is an updated version of the Shiman 9100/9150 and 8000 SS / 8050 SS oversized pulley syst. Installation instructions for this version and older versions can be found in the "support" section.This new design has a built in limit tower for easy installation.The LTWOO super large pulley system has proven to be a fast pulley system. Compared to the standard Shiman system, the energy savings is only 2.1 watts.The system suitable for Shimano 9100/9150 and 8000 SS / 8050 SS is an industry product and has been chosen by many world cycling teams and profeional triathletes.With the 13 tooth upper pulley and 18 tooth lower pulley, the rear derailleur can be absolutely optimized. The upper and lower oversized aluminum pulleys are equipped with standard or coated ceramic.Please Note:syst for 9100/9150 and 8000 SS / 8050 SS are not compatible with the Ultegra 8000-GS or 8050-GS (medium cage) front derailleur, nor with the Ultegra RD RX800 and RX805 equipped with clutches. For versions compatible with RX800 and RX805, cheout our Shimano RX800 / 805 OSPWX. For compatible Ultegra 8000-GS or 8050-GS upgrades, cheout our Shimano 11s NW pulley wheels.Shimano 9100/8000 OSPW system is compatible with Dura Ace and Ultegra derailleur up to 32 tooth boxes