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Pitster Pro - 140cc Semi-auto Engine

Vital Information
Part No PP-11309
Stock Level Out of Stock!
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Pitster Pro is the maker of all GPX engines. GPX engines sold here will carry the GPX or PP logo on both sides. This is the most current version available and all most current improvements. We have had excellent results and great customer feedback on this engine.

Kit Includes:

  • Kicker starter
  • Shifter
  • Stator
  • Wiring harness
  • CDI
  • Ignition coil
  • Oil cooler & lines
  • 22mm carb
  • Front drive sprocket (on engine)

Note: When upgrading your Honda XR50/70, CRF50/70 to this engine you may want to use order aftermarket footpeg mounts and tank spacers. Also we suggest using an aftermarket exhaust to obtain maximum performance. All of these items are available at TBoltUSA.com


Displacement 140cc
Engine Type Air Cooled, Single-Cylinder, 2-valve, 4-stroke
Bore/Stroke 56mm x 57mm
Final Drive Chain
Fuel Delivery 22mm
Fuel Unleaded / 91 Octane
Recommended Engine Oil 10W-40 Petroleum Based (Nonsynthetic)
Kick Start Yes
Electric Start Yes
Auxiliary Output Yes
Transmission 4-Speed, 4-up
Shift-Pattern Four-speed Transmission: N-1-2-3-4
Clutch Semi-auto

Available Options:


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Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online Pit Bike Technical Info Database!

We have all necessary support parts on hand.

Most orders ship same, or next business day, unless otherwise noted above.