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
Shimano 3 BY 6 SPEED TWIST SHIFTER SET | Bike Parts
Shimano RevoShift SL-RS31 3/6/18 Speed MTB Bike Shifter Twist Grip Shifters 3x6 | eBay
Shimano Tourney Sl-rs35 Mountain Bike Clamp Band 3x7/6-speed Revoshift Shift Lever Iamok Shifter Bicycle Parts - Bicycle Derailleur - AliExpress
Shimano RevoShift SL-RS25 MTB Bike Twist Grip Shifter -6 Speed Right Shift Black | eBay
REVOSHIFT SHIFTER | SHIMANO BIKE COMPONENT
Shimano Tourney SL-RV200-6R Revoshift Shifter - 6-speed - right | BIKE24
SHIMANO TOURNEY Right Shift Lever 6-speed | SHIMANO BIKE-EU
SHIMANO TOURNEY Right Shift Lever 6-speed | SHIMANO BIKE-EU
Shimano 6-Speed Right Revoshift Switch Chain - Multi-Colour : Amazon.co.uk: Sports & Outdoors
Shimano Revo 6 Speed Twist Shifter – Infinity Cycle Works
Shimano RevoShift SL-RS35-R Twist Shifter Right (6) - Walmart.com
Shimano Tourney Shifter | Twist Shifter Lever | Rs35 Tourney | Bicycle Comb - Shimano Rs35 - Aliexpress
Shimano RevoShift SL-RS36 3/6/7/18/21 Speed Twist Grip Shifter Bike Transmission | eBay
Shimano RevoShift SL-RS35 Twist Grip Shifter 3/6/7/18/21 Speed MTB Bike Shifters | eBay
Shimano SL-RS36 Revo Shifter– Pushbikes
