Ergon GE1 Evo Slim Grips - Risky Red U7337 If your new rotors are

If your new rotors are a different size than the ones you're replacing

and 10-Series headsets

With proper drivetrain maintenance

its easier to install vs a 4 bolt stem

8 Color Orange Defined Color Orange Length 35 Material Aluminum S

Ergon GE1 Evo Slim Grips - Risky Red U7337 If your new rotors areErgon GE1 Evo Slim Grips Risky Red Lock On. GE1 Evo Slim GripsRecommended for: glove sizes Small Medium (65 85) or for preference of smaller diameter grips Directional Grip Texture opposite to hand Rotation for maximum grip Improved pressure distribution in thumb area Tuned damping within the various grip zones due to different material thickness inside the grip core Additional damping on external edges TECH SPECS Flange No Color Risky Red Length 135