The optimal solution for users of SRAM 10-speed cassettes, which when driving up steep inclines with 1x10 drives, often lacking an even larger sprocket.
The cassette extension of Hope is very easy to install, it fits behind the normal 11 to 36 cartridges, but displaced due to the predetermined width of the free wheel, a pinion.
The pinion 17 mm and a spacer from the group consisting cartridge is removed, and then completes the pinion teeth 40 with the rest of the cassette.
For operation with a 1x10 system, please use a derailleur with medium long cage. When using 2x10 drives a switching mechanism with a long cage is to be recommended.
Material: milled 7075 CNC
Teeth: 40 teeth
Tooth shape: optimized for SRAM
Compatibility Cassette: 11-36 | 10-speed SRAM PG 1030/1050 to 1070
Compatibility derailleur: medium cage (1x10) or long cage (2x10)
Lockring: is used by existing cassette
Color: black, silver or gold