In the pits at MTB World Cup #1, Napa Valley, California, USA, April 7-8, 2001

SRAM has judiciously mixed materials to keep weight down in its proto rear derailleur. We wonder if a small change to the shape of this carbon fibre piece would change the pull/travel ratio so a Shimano shifter could be used… Here's another angle.
Photo ©: Tim Maloney/cyclingnews.com

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