The 40T-rex allows you to upgrade your existing 11-36 10spd cassette by installing behind your existing cassette and replacing one of the smaller sprockets, usually the 17T,
to give an 11-40T range.
- Precise matching of the tooth profiles and shifting points specific to each cassette
- Perfect mating of supporting tabs to reduce flex and aiding shift performance
- Lower B-tension adjustment is needed ensuring good shifting throughout the cassette range compared to fitting a 42
- Hard anodized 7075 T6 Aluminum
- SRAM versions are compatible with Sram PG1030, PG1050 and PG1070 11-36 cassettes
- Shimano versions are compatible with Shimano XT and XTR 11-36 10spd cassettes