The Hope 40T-Rex Expander Sprocket provides 10 speed junkies the option of big toothed cogs at a fraction of the cost of an entirely new drivetrain. This 40T cassette expander replaces one of the smaller cogs (usually the 17T) to convert your 11-36T cassette into an 11-40T; it's really that simple. Medium to long cage rear derailleurs are preferable, but an included 20mm B-Tension screw should get you going if your standard B-Tension screw is not long enough. The Hope 40T-Rex Expander Sprocket will allow you to expand your gear range without requiring new freehub bodies, shifters, and rear derailleurs.
Hope T-Rex Expander Sprocket Specifications
Adapts a 11-36 10spd 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
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
Hard anodized 7075-T6 aluminium
Hope T-Rex Expander Sprocket Compatibility
Shimano XT and XTR 11-36 10spd cassettes
SRAM PG1030, PG1050 and PG1070 11-36 cassettes
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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