REVOSHIFT Shifter SIS INDEX 6-speed | SHIMANO BIKE-EU
SHIMANO - 6 speed Twist Grip Shifter (Right Shifter), Revoshift Sis In – Bike Blvd
Shimano Grip shift bike Revoshift 6 speed right hand SL-RS35
SHIMANO TOURNEY Right Shift Lever 6-speed | SHIMANO BIKE-EU
My daughter's Trek came with a 6-speed Shimano Revoshift SIS Index. It's a new bike. She can shift to higher gears easily but does not have the grip strength to shift back