NICHE 80cc Piston Cylinder Head Top End Kit for Yamaha 21W-11111-00-00 | For Yamaha, Fits 1983-2006 PW80, 1986-1990 BW80 Motorcycles

MK1000924

About NICHE

NICHE provides Powersports replacement parts. Some of the NICHE product categories include cylinders, brake pads, axles, off-road mirrors, and drive chains. NICHE parts are here for when you need them the most.

NICHE Cylinder Piston Gasket Kit Part Number MK1000924

• Includes: NICHE Cylinder Piston Gasket Kit
• Compatible with the following brands: Yamaha
• Compatible with the following models: Big Wheel 80, PW80
• Replaces for the following OEM MPN's: 21W-11111-00-00, 1W7-11181-00-00,4AW-11351-00-00, 3E5-11631-00-97, 14N-11603-00-00, 93450-13022-00,93310-11268-00, 527-11633-00-00,18E-11311-00-00

• Compatible Vehicle: ATV
• Placement on Vehicle: Front

NICHE CYLINDER

• ATV engines come with either one or two cylinders
• Displacements typically measuring between 100cc and 800cc
• It's important to note that safely riding an ATV requires a certain amount of body weight and physical strength
• Disaster can strike, for example, when a young rider uses an overpowered or a larger ATV

NICHE PISTON

An ATV piston is a component of engines, pumps, and gas compressors. It is located in a cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft through a piston rod and or connecting rod

Piston Anatomy

A piston is a cylindrical engine component that slides back and forth in the cylinder bore by forces produced during the combustion process. The piston acts as a movable end of the combustion chamber. The stationary end of the combustion chamber is the cylinder head.

Piston Components

ATV Piston components include the piston head, piston pin bore, piston pin, skirt, ring grooves, ring lands, and piston rings. The piston head is the top surface of the piston which is subjected to tremendous forces and heat during normal engine operation

NICHE GASKET

A gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression.

Some Types of Gaskets:

• Head gaskets create a seal between the engine block and cylinder head. This seal establishes a proper compression and prevents fluid leaks into the cylinders
• Base gaskets create a seal between the top-end of your engine and the engine cases. Stop pesky engine oil leaks before they cause permanent damage to your engine.
• The valve cover is sealed to the upper section of the engine cylinder head by a valve cover gasket. As it passes around the camshafts, rockers, and valves, the gasket stops engine oil from seeping out.