105cc Big Bore Build, Stage 3

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  • Regular price $1,125.00

We build your 79cc Predator engine.

This build has the following performance parts:

  • re-sleeved cylinder
  • big bore piston bringing engine to 105cc
  • .244" lift cam with hardened lobes
  • billet flywheel 
  • ported/milled cylinder head
  • HD valve springs
  • chromoly pushrods (Comp Cams)
  • stainless steel guide plate
  • copper head gasket
  • curved carb manifold (accepts PZ19 or VM22 carb)
  • breather filter, solid side cover dowel pins & head studs
  • optional big valve head with 25 mm intake & 22 mm exhaust (+2mm over stock)
As of January 2017 Harbor Freight no longer ships the 79cc engine to CA. The purchase of this Stage 3 build requires you to ship us your 79cc Predator. The price has been adjusted accordingly. PLEASE ALLOW PLENTY OF TIME FOR THIS BUILD.  WE HAVE TO SEND THE CYLINDER OUT AND DON'T HAVE CONTROL OVER THE TURN AROUND TIME FROM OUR PARTNER SHOP.  **SINCE COVID, THE MACHINE SHOP HAS BEEN SLAMMED.  CURRENTLY WAITING 10-12 WEEKS.**This kit does not come with a carburetor, header, throttle cable or clutch. Our race proven engines are the result of many hours of R&D. This modified 79cc Predator is great for mini bikes, motorized bicycles, go karts and many other applications.