Hope 40T-Rex Ratio Expander

Hope 40t-Rex (40t ratio expander) allows you to upgrade your existing 11-36 10spd cassette to give an 11-40 range

Key Features
Adapts a 11-36 10speed cassette to give an 11-40t range
T-REX ring installs behind existing cassette, replacing one of the smaller sprockets, usually 17t
Shimano and Sram specific tooth profiles and shifting

Compatible with:
Shimano XT and XTR 11-36 10spd cassettes
Sram PG1030, PG1050 and PG1070 11-36 cassettes

Shimano and Sram specific 40t sprockets have been designed allowing benefits that wouldn't be possible with a larger sprocket size or with a universal type design:

• Precise matching of the tooth profiles and shifting points specific to each cassette;
  
• Perfect mating of supporting tabs reducing flex and aiding shift performance;
  
• Lower B-tension adjustment is needed ensuring good shifting throughout the cassette range compared to fitting a 42t
  
• Compatible with: Shimano XT and XTR 11-36 10spd cassettes and Sram PG1030, PG1050 and PG1070 11-36 cassettes
  
• Hard anodized 7075T6 aluminium
  
• Available in black, silver or gold hard anodised finish
  
• Weight: 74g