SSP-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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