The Box Stock Project Engine is your best engine choice to build a Box Stock, BP, or Stock Appearing / Outlaw kart racing engine. Packages come with the preferred "Ruixing" brand.  Now comes with the BSP4 cam and performance cast rod installed in the engine. Standard features of the packages above are:

• Max-Stroke Crank increases both displacement and compression
• Piston is .003" to .010" in the hole minimizing combustion chamber volume for greater compression
• Hi Flow "JT" head castings
• Double tabs on blower housing mounting flanges
• Stainless steel push rods
• Performance cast connecting rod

This engine is not race ready and has not been blueprinted. The building and legality is the responsibility of the end user. All clearances and bolt torque specifications should be checked and double checked.