The Aspen is designed with a high-volume casing to smooth out the roughest roots and rocks

For Double Ring use

Compatible with Antares and Galaxia Rollers

Three pockets plus one small mesh over-pocket add some carrying capacity for any items you might need close at hand

laser cut crossover straps and an internal shelf bra that provides moderate support

SHIMANO Sora RD-R3000-SS Rear Derailleur - 9-Speed SS - Black trike The Aspen is designed withAs part of the most robust and attractive 9 speed component group ever, the SHIMANO SORA derailleur offers affordable performance and wide range compatibility. 32 Tooth Max Sprocket Size