CeramicSpeed OSPW Pulley Wheel System Shimano 9000/6800 Series - Alloy Pulley Carbon Cage BLK MFPN=11100289 Model Miracle Red Description Drivetrain

Model Miracle Red Description Drivetrain Degreaser Type Bulk Size 3

0 Color Blue Material Aluminum Defined Color Blue S

Most droppers work great with both and it comes down to personal  preference on the firmness of the lever feel and extension of the lever over the grip

Stretch material at back for good mobility and comfort

CeramicSpeed OSPW Pulley Wheel System Shimano 9000/6800 Series - Alloy Pulley Carbon Cage BLK MFPN=11100289 Model Miracle Red Description DrivetrainThe CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low friction bearings and unique overall design. Features two oversized 17 tooth aluminum pulley wheels with Grade 3 Silicon Nitride balls Robust cage crafted from polyamide and carbon fiber for durability and light weight Defined Color Black Drivetrain Speeds 10 Fits Brand Shimano Fits Model Dura Ace 7900 7970