Skip to product information
1 of 12


Black YX 140cc Electric Start Clutch Full Kit

Black YX 140cc Electric Start Clutch Full Kit

Regular price $565.00
Regular price $575.00 Sale price $565.00
Sale Sold out
Shipping calculated at checkout.

Arguably the most reliable pit bike engine made. The YX140 140cc Engine fits perfectly in the Honda CT70, Z50, ATC70, SL70, XL70, CRF50 and more. It offers over double the power of the original Honda 70cc engine, the bigger bore / stroke brings this 140cc HP up to 13.5. Enough to cruise at 55 MPH +

Photos show this YX140 motor kit installed in our CT70 140cc Engine full Restomod build

Engine Type 4 Stroke, 2 Valve, Single Cylinder Oil Cooled, 2 Bolt Horizontal
Displacement 140cc
Power 13.5 HP
Compression Ratio 8.8:1
Bore / Stroke 56mm x 57mm
Fuel 91 Octane
Recommended Engine Oil 10W-40
Starting Bottom Mount Electric Start, Kick Start (14MM Shaft)
Lighting Output Yes
Clutch Manual Wet Multi-Plate Clutch
Shift Pattern

4 Speed all up N-1-2-3-4




  • Molkt PE26 Carburetor, Intake and Gaskets
  • Foam Filter
  • Sprocket Cover
  • Breather Tube
  • Starter Solenoid
  • CDI
  • 12V Rectifier
  • Ignition Coil
  • 420 17T Sprocket
  • Shifter Lever
  • Kick Start Lever


View full details