Originally Posted by pierce

Unluckily, I never measured the rear dropout inside ('outer locknut')... I know the frame is stretched considerably over these 135mm mtb hubs, but he's already left for school. Do you know what the rear width is (or was originally if you cold stretched yours), I'm guessing its either 120 or 126mm. trek's 76/77 catalogs online at vintage-trek don't give a clue. if the bike was originally a 27" 5-speed, its probably 120mm. if it was a 6 speed, 126mm.