SSP-G GY6 241cc 4V Power Kit


Out of stock

  • Cylinder Bore: 67mm
  • Cylinder Height: 75.2mm
  • Cylinder Stud Spacing: 57mm (“B Case”)
  • Overall Left Crankcase Length: 20 inches
  • Includes All Gaskets and Hardware
  • Made in Taiwan
SKU: 169-532 Category:

SSPGSSP-G 241cc big bore kit and 4V Cygnus style head for GY6 Engines.

This complete power kit comes with a 67mm cylinder kit and matching crankcase with all of the oil seals installed. This means there is no machining of the crankcase required. The crankcase is also pre-drilled and tapped for an oil cooler, which is a necessity on street ridden bikes. For drag racing, the included oil bypass fitting may be installed.

Includes the following:

  • Complete 4-Valve Cygnus style cylinder head assembly with 25mm intake valves and 22mm exhaust valves
  • 67mm ceramic coated cylinder and high compression forged piston
  • Right and left engine cases with oil seals installed
  • 250 degree camshaft, cam gear, cam chain and roller rockers
  • Anodized head and cam covers
  • 10.5mm stroker crank and 6mm cylinder spacer
  • 32mm Exhaust
  • Gaskets, cylinder studs, and associated hardware

The manufacturer suggests that up to 27hp is possible with this kit.

Some recommended additions (not included with kit) are: a high torque starter and starter clutch, an oil cooler kit for street riding, a high quality (such as Bando) 842-20-30 belt, 34mm PWK carburetor, quick throttle, 15/38 rear gears, and a performance clutch and variator kit. Please see related items.

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SSP-G GY6 241cc 4V Power Kit