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NICHE Big Bore 44mm Top End Repair Kit for Yamaha Y-Zinger PW50 QT50 YF60S 18U-11631-00-A0 1979-2017

Free shipping on orders over $29.99

$27.95

$ 13 .99 $13.99

In Stock

About this item

  • Compatible with OEM Part Numbers Yamaha 18U-11631-00-A0, 18U-11635-00-00, 18U-11636-00-00, 36R-11631-00-A0 36R-11635-00-00, 36R-11636-00-00, 517-11181-01-00 36R-11181-00-00, 3PT-11351-00-00
  • Compatible with the 1981-2009 2012-2017 Yamaha PW50 Y-Zinger
  • High Quality Cast Aluminum Piston for Superior Quality and Performance
  • Big Bore Piston Kit Complete with Piston, Rings, Needle Bearing, Wristpin and Circlips
  • Piston Diameter 43.98mm / Piston Height 51.17mm



Product Description

NICHE replacement piston
OEM MPN's: 36R-11181-00-00,3PT-11351-00-00

MK1001146

NICHE Powersports Replacement Parts
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 Big Bore Piston Gasket Ring & Spark Plug MK1001146

  • Includes: NICHE Piston Gasket Kit
  • Compatible with the following brands: Yamaha
  • Compatible with the following models: Y-Zinger PW50
  • Replaces for the following OEM MPN's: 36R-11181-00-00,3PT-11351-00-00
  • Compatible Vehicle: Dirt Bike
OEM MPN's: 36R-11181-00-00,3PT-11351-00-00

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

36R-11181-00-00,3PT-11351-00-00

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.


tony brindle
Reviewed in the United States on February 22, 2025
works with big bore kit with compression
Customer
Reviewed in the United States on April 14, 2025
great product and it fit perfect.
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