![Amazon.com : Revere Shimano Altus Mountain Bike 7/8-speed Rear Derailleur - Direct Mount - RDM310 : Sports & Outdoors Amazon.com : Revere Shimano Altus Mountain Bike 7/8-speed Rear Derailleur - Direct Mount - RDM310 : Sports & Outdoors](https://images-na.ssl-images-amazon.com/images/I/51xjNwpHGpL._AC_UL600_SR600,400_.jpg)
Amazon.com : Revere Shimano Altus Mountain Bike 7/8-speed Rear Derailleur - Direct Mount - RDM310 : Sports & Outdoors
![The shorter 8-speed Shimano Altus pulley cage is designed to keep the rear derailleur away from the ground. © Cyclocross Magazine - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media The shorter 8-speed Shimano Altus pulley cage is designed to keep the rear derailleur away from the ground. © Cyclocross Magazine - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media](https://www.cxmagazine.com/wp-content/uploads/2017/06/prevelo-kids-bike-alpha-three-20-inch-IMG_0746-cxmagazine-750x500.jpg)
The shorter 8-speed Shimano Altus pulley cage is designed to keep the rear derailleur away from the ground. © Cyclocross Magazine - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
![Amazon.com : Shimano RDM310DL Altus GS 7/8-speed Rear Der Black,Long Cage : Rear Bike Derailleurs : Sports & Outdoors Amazon.com : Shimano RDM310DL Altus GS 7/8-speed Rear Der Black,Long Cage : Rear Bike Derailleurs : Sports & Outdoors](https://m.media-amazon.com/images/I/41gevl2lltL._AC_SY1000_.jpg)