Looking to Increase the power on your GX340 or GX390 Engine?
This kit will upgrade you to 16 HP (90mm Bore)
Kit Includes:
1 x New 90mm Engine Block 1 x New 90mm Piston 1 x New 90mm Ring set 1 x New Piston Pin & Clips 1 x New Connecting Rod 1 x Full Gasket Set 2 x Oil Seals 1 x Straight Crank Shaft 1" Diameter 1/4" Keyway
**Please See Photos**
This kit includes everything you will need to do the power upgrade on your engine.