BSP New and Improved Crankshaft. Balanced, Hardened, and heat treated. (2.130-2.133 GUARANTEED) Now with less flex. Best and strongest on the market!

JRPW Attack Series AKRA or NKA Machined Head.

Original Box Stock Project 6.5HP OHV (196cc) Engine (Assembled) Now with the new BSP-4 Cam Installed NEW (Race Ready Ruixing Carburetor, Tuned and Jetted Main .038", Low Speed .022")

OEM Die Cast Aluminum Flywheel for Box Stock Project engines. It's BALCO certified and spin tested to 10,000 RPM's. Weight is 3.18 pounds. Fits 196cc and 212cc clone motors!

BUILT IN AMERICA WITH PRIDE BY THE BOX STOCK PROJECT INC.

Original Box Stock Project (Black Out) Engine Kit with ARC Flywheel NEW BSP-4 Race Cam

Original Box Stock Project Engine & ARC Flywheel (OPTIONS UPGRADE)

Original BSP Engine Kit: BSP-4 Race Cam

Original Yellow Box Stock Project 6.5HP OHV (196cc) Engine (Assembled) Now with the new BSP-4 Cam Installed NEW (Race Ready Ruixing Carburetor, Tuned and Jetted Main .038", Low Speed .022")

Southern Express Advantage Pro .930 thick flange produces more top end torque. (Legal under all sanctioning bodies) Fits 196cc and 212cc clone motors!

Advantage Pro 3 (.885) Ceramic Coated Header by Southern Express. (Legal under all sanctioning bodies) Fits 196cc and 212cc clone motors!

Custom anodized aluminum oil catch can. Drain petcock with mounting hose clamp and all fittings. Choice of 4 colors red, blue, black, and silver. Please mark the box for your color.