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MK1000960
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 MK1000960
- Includes: NICHE Cylinder Piston Gasket Kit
- Compatible with the following brands: Yamaha
- Compatible with the following models: PW50, QT50 Yamahopper, YF60S 4-Zinger
- Replaces for the following OEM MPN's: 4J2-11311-00-00, 4J2-11111-00-00,BP4-HS000-00-00, 517-11181-01-00,3PT-11351-00-00, 95380-06600-00,90116-06269-00,3L5-11630-00-00,93310-210M0-00, 4J2-11311-01-00
- 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.
Customer
2025-08-15 20:27:42
very easy to put together , but i wish that it had instructions on the piston directions
Jill
2025-06-24 10:30:14
Everything comes individually packaged. Cylinder and head machined nice. Would recommend.
Alyssa Hill
2025-05-10 16:17:28
Went on like factory and runs flawlessly. The bike it is installed on is converted to pre-mix so a little fuel tuning was needed. Daughter is very happy that her bike is running again and I’m happy that I didn’t have to break the bank to make it happen. Only gripe was the wrist pin bearing was missing from my kit. No big deal as the oem wasn’t in bad condition.
Zmiz
2025-05-06 18:37:17
It came with all the parts including the spark plug. Took me and my son 30 minutes to install it and it’s like a brand new bike. I weigh 220lbs and it’ll pull me up a hill with no problem.
seth
2025-05-05 15:28:05
The media could not be loaded.
Bryan
2025-03-16 12:24:27
Claimed 60cc big bore kit. Recieved a std bore, piston and rings.Also the cylinder studs were very poor qualityBut...It all installed great and works well aside from the cylinder studs. Reused the oem ones.Decent rebuild for the price but not a big bore kit as advertised.
Kippy
2025-03-04 11:00:58
It came has a kit everything you needed was there and it worked good thank you
eli
2025-02-18 15:16:52
The media could not be loaded.
jeromef
2025-01-21 12:28:34
Direct fit. All was there. Not sure if theres suppost to be a gasket for the exhaust pipe, used red rtv.Started right up, trashed around a bit with the bike to break it in. Works well. More power.Idles well. Time will tell on durability.For 100$ CAD. Totally worth it
Brent
2025-01-18 16:07:12
Works excellentBought before will buy again
Travis G
2024-12-28 12:54:04
Motor had been apart for years. Was everything I needed to assemble. Fired up on first crank! Has more power than a stock 50cc
Adam burger
2024-12-16 17:53:02
Cheap and work like a charm. Just buy Yamaha bearings.
Shane VanderHoek
2024-12-05 11:22:39
Was a perfect fit, bolted right on and couldn’t beat the price!
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