This professionally ported top-end replacement for your GT5 2-cycle bicycle engine will add instant horsepower to your ride. These cylinders have huge transfer ports – these feed the fuel into the combustion chamber so bigger = better! Also, the deck height is lowered for more compression, and the transfer ports are reshaped and directed towards the intake for more efficiency.
You also get a bunch of other goodies with this package. 5 extra head and base gaskets in total allow you to set your port timing how you prefer. It also allows you to run any type of head – from stock to our BMW 6.0cc high comp head.
*note: lead time can be up to 5 business days on this item, depending on work load.
This package includes:
• Ported Cylinder
• Modified Piston
• 2 piston rings
• Needle Bearing + Wrist Pin
• 2 Cir-clips
• 2 base gaskets
• 1 Aluminum Head Gasket
• 2 Copper Head Gasket (.4mm + .6mm)
• 15mm “Big-Mouth” Intake Manifold
• Port-Matched Intake + Exhaust Gaskets
• “Thread Grabber” exhaust stud system
This top-end kit will only work on a GT5 type engine with a 38mm stroke. These engines will have a con rod from the crank that has one of the following markings: ZAE60 – ZAE80 – ZAF80 – FM80.