(ON ORDER) Original Yellow Box Stock Project (196cc) Engine


ARC 6689 Billet Speedway Flywheel:   ARC 6689 Billet Speedway Flywheel (Add $110.00)
ARC Flywheel:   ARC Billet Aluminum Flywheel (Add $100.00)
BSP Gold Springs:   BSP Gold Springs (Add $13.99)
EV-6:   EV-6 (Add $48.00)
Qty: - +
   - OR -   

Original Yellow Box Stock Project 6.5HP OHV (196cc) complete engine. With only the highest quality hand-picked BSP parts to include the following:


  • (The true) JT-223 Cylinder head
  • Hardened heat treated crankshaft (guaranteed 2.127-2.133)
  • Rubber valve cover gasket
  • T6 Treated cast stock rod
  • BSP-4 camshaft
  • Light weight lifters (18-18.3 grams)
  • T6 Treated stock light weight piston with lightweight wrist pin
  • BSP block and side cover (bore 2.6786)
  • Highest quality P6 bearings
  • Black side cover gasket for a little extra give
  • Throttle return spring and pull rod (for your top plate kit)
  • Race ready Ruixing carb tuned and jetted (main .038", low speed .022")

 Available options:

  • ARC Speedway Billet Aluminum Flywheel (6689)
  • ARC Billet Aluminum Flywheel (6619)
  • EV6 camshaft
  • BSP Die Cast Aluminum Flywheel (BALCO Spin tested to 10,000 RPM's)

Black motor available under part# BSP100B 

For more info or if you have a specific engine application in mind that we do not have listed, give us a call and we can make it happen. Call 386-938-4211.

(Does not include: Flywheel, top plate, air filter adapter, chain guard, fuel pump, or air filter.)

 For competition racing only.


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