Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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No mechanical change in your drivetrain should cause the bike to ride slower. That's determined by the engine.
If they changed the cassette size it might feel different since the gear ratios are different, but even that won't cause a net change is speed or power. I suggest you give the engine a good tune up.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
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