Shimano SP41 Derailleur Housing Box 4mm x 50m Black ModelNumber=K4278 Caliper piston kit

Caliper piston kit

Brake Lever Actuation Short Pull Color Black Brake Lever Use Right Rear Der/Shifter Compatibility Shimano Road Includes Brake No Adjustable Reach Yes Drivetrain Speeds 11 Defined Color List Black Shifter/Derailleur Compatibility Shimano

Defined Color Black Brake Caliper Type Post Mount Brake Lever Actuation Hydraulic Rotor Included No

They are designed for Shimano Dura-Ace 9100 Ultegra 8000 & 105 R7000 4-bolt cranks only

Shimano SP41 Derailleur Housing Box 4mm x 50m Black ModelNumber=K4278 Caliper piston kitShimano SP41 Derailleur Housing Box 4mm x 50m Black. Shimano OT SP41 & SIS SP51 Derailleur Housing TECH SPECS Length 50 Color Black Housing Diameter 4