Super PK80 - Iron Sleeve Complete 49mm Bore 2 Stroke Motorized Bicycle Engine Kit 80cc

The Super PK80 engine is based on the original PK80 engine, however it has a thicker cooling head and an iron sleeve in the cylinder that provides better durability and a longer engine life.  Furthermore, this engine has a larger bore size (49mm) than the ordinary PK80 (47mm), which allows for increased speed and torque.  

The standard bike can be transformed into a motorized bike with this 80cc gasoline engine kit. You can enjoy riding at a faster speed—up to 55 km/h—after upgrading your bike. It makes your outdoor journey more convenient because it runs nearly as quickly as a motorcycle or scooter. Most 26" or 28" bikes with a V-frame can be fitted with this engine package.

Super PK80 Complete Engine Kit Includes:

• Closed transfer ports

• Super PK80 Pro 3+ HP 2 stroke Engine 

• Type B piston (high wrist pin)

• Long connecting rod 40MM (89mm)

• Stuffed crank case with corrosion resistant pearl coating

• Upgraded Magneto

• Improved large intake port (40mm bolt hole width)

• Improved large exhaust port

• Better balanced crank

• Upgraded bearings / 60% thicker crank case around bearings

• Larger 8mm x 1.25 engine mount studs

• Z4C Spark plug                     

• Chain guard

• Chrome muffler (longer angle)

• Ball bearing chain idler

• New style clutch lever

• 415 Heavy duty chain

• CDI Ignition

• Tall Cylinder Head (More Heat Fins, Better Cooling)

• Black Teardrop gas tank (2 L)

• Updated NT racing carburetor with intake O-ring seal

• 9 hole rear drive sprocket

• Twist throttle with kill switch - incl. throttle cable and matching left grip

• Dimensions: 9" x 9" x 5"

Mounting Kit & Accessories

• Fuel tank w/fuel cap, fuel valve, inline fuel filter, and fuel line

• 415 Heavy duty chain, chain guard, and ball bearing chain tensioner

• Standard muffler

• Throttle assembly w/gooseneck style throttle cable

• Quick release push button clutch lever

• Large front mount for bicycles that have large down tubes

• Standard 36 or 44 tooth rear sprocket and sprocket installation kit

• Spark plug wrench and gear-puller tool

IMPORTANT (Please read):

1.      In order to create a suitable steal on the intake and stop any air leaks, please do not remove the plastic insert or o-ring that comes with your carburator.

2.      To prevent exhaust from snapping at welds, use the exhaust strapping kit that some kits come with if necessary. Alternatively, you can purchase a JB Weld Metal Strapping Kit.

3.      To prolong the life of these components, it is advised to clean and regrease the clutch arm, bucking bar, and bevel gear every few weeks.

4.      Fuel/Oil Ratio recommend by manufacturer: New Engine (500km or approx 3-5 tanks): 20:1 or 50ml of oil per litre. After Break In: 25:1 or 40ml of oil per litre.

Using a different oil ratio than what is advised may speed up engine wear and cause engine seize. Don't assume the ratios instead, use a two-stroke mixing container to measure the oil. Our engine kits come with a 30-day warranty from the date of delivery. If you use a different oil mix ratio, this warranty will be void.