![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 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](https://preview.redd.it/xbz2kfj9mbx01.jpg?auto=webp&s=a17a5788686bdc980b64163a7e123b3a27228459)
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
![Amazon.com: ZUKKA Revoshift 6 Speed Shimano Right Shift Lever SL-RS35-6R Bicycle Twist Shifter Lever Mountain Bike Commuter Bike Folding Bike : Sports & Outdoors Amazon.com: ZUKKA Revoshift 6 Speed Shimano Right Shift Lever SL-RS35-6R Bicycle Twist Shifter Lever Mountain Bike Commuter Bike Folding Bike : Sports & Outdoors](https://m.media-amazon.com/images/I/51ZJaavv9AL._AC_UF894,1000_QL80_.jpg)
Amazon.com: ZUKKA Revoshift 6 Speed Shimano Right Shift Lever SL-RS35-6R Bicycle Twist Shifter Lever Mountain Bike Commuter Bike Folding Bike : Sports & Outdoors
![Bicycle Shift Levers Shimano | Shimano Shifters Revoshift | Derailleur Shimano Tourney - Bicycle Derailleur - Aliexpress Bicycle Shift Levers Shimano | Shimano Shifters Revoshift | Derailleur Shimano Tourney - Bicycle Derailleur - Aliexpress](https://ae01.alicdn.com/kf/H9084c8ef553d4870b6f0b44669787a1ek/Shimano-Tourney-SL-RS35-Revoshift-grip-bike-Twist-Shifter-lever-3-6s-3-7s-18S-21s.jpg)
Bicycle Shift Levers Shimano | Shimano Shifters Revoshift | Derailleur Shimano Tourney - Bicycle Derailleur - Aliexpress
![Shimano Revoshift SL-RS35,7 - Palanca de cambio derecha para bicicleta de montaña : Amazon.com.mx: Deportes y Aire Libre Shimano Revoshift SL-RS35,7 - Palanca de cambio derecha para bicicleta de montaña : Amazon.com.mx: Deportes y Aire Libre](https://m.media-amazon.com/images/I/61GGfa4V-yL._AC_UF894,1000_QL80_.jpg)
Shimano Revoshift SL-RS35,7 - Palanca de cambio derecha para bicicleta de montaña : Amazon.com.mx: Deportes y Aire Libre
![Shimano Maneta de Cambio Giratoria - Tourney SL-RV400 - Revoshift | Friction/SIS | OGD - 3x8 Velocidades | Par (LN+8R) Shimano Maneta de Cambio Giratoria - Tourney SL-RV400 - Revoshift | Friction/SIS | OGD - 3x8 Velocidades | Par (LN+8R)](https://images.bike24.net/i/mb/50/2c/4d/shimano-tourney-sl-rv400-ln-revoshift-twist-shifter-2-1282244.jpg)