Trek OCLV 9900 Carbon frame (1996/97)

Maxipedia":3bnlx92k said:
[...] looks like an 8 speed rear derailleur [...] the 9-speed rear derailleur had that rubber boot as a seal for the housing/cable.
The upper pivot bolt is an easy way to spot an 8-speed RD-M950 derailleur. The RD-M950 had a solid titanium bolt. The later models (951, 952, 953) used a hollow steel bolt.
 
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