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Description

"Hop Up for a Motorbike". Some simple tips to get a bit more power from a 125cc or smaller bike. Details are for a Harley 125, but could be used on other bikes:
 
  • Milling the Head
  • Piston and valve modifications
  • Smoothing out the ports

This is an original 3 page magazine article from 1969.
We do not photocopy these.
 
Article Includes
  • Measured Drawings and Diagrams
  • Instructions

Payment

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