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MK1000998
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 MK1000998
- Includes: NICHE Cylinder Piston Gasket Kit
- Compatible with the following brands: Honda
- Compatible with the following models: Sportrax 400, TRX400X, XR400R
- Replaces for the following OEM MPN's: 12100-HN1-A70, 12191-KCY-672,12391-KCY-671, 14000-HN1-A70, 13011-KCY-670, 13101-KCY-670,13111-KCY-670, 90601-KA5-000,98061-59616,12100-KCY-670,14000-HN1-000
- 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.
Roy
Reviewed in the United States on August 7, 2023
Works perfectly no more smoke and starts super fast runs amazing.
thomas
Reviewed in the United States on March 28, 2023
Piston and rings are not very good quality. Put together and it smoked like a freight train. Took apart and one of the oil rings was broken. Way thinner than other brands.
Kenneth Libby
Reviewed in the United States on June 7, 2022
400ex, WE bought this for our race engine, and only lasted 5 races. The cylinder warped so bad that it siezed the piston and the wristpin. The wristpin was also seized in the connecting rod. Probably ok for backyard riding, but for racing...season the cylinder by riding easy then teardown and order new rings and hone the cylinder. might be ok then.
Shawn
Reviewed in the United States on October 31, 2022
Used this kit on a 2005 Honda TRX400EX and everything went great! Great compression and zero issues.
BreadWinner Daniel
Reviewed in the United States on May 14, 2021
First things first, I ordered two. One kit, and one just the bore. BOTH bores has imperfections which could be catastrophic. I should’ve taken pictures before I sent it back, but do NOT use this. Don’t put Amazon parts on your ATV. Inside the section where the timing chain goes, was rigid metal that will eventually be snapped off by the chain and knocked into your crank case, destroying your bottom end. Apparently, these Pistons fail quick too. Did lots of research. Do NOT put this on your beautiful TRX. Spend the money to do it good, or don’t do it at ALL. These gaskets looked crappy too. Get the metal ones. Just buy the Wiseco Kit for $530 on eBay. Avoid all this. Please.
Brantley
Reviewed in the United States on March 23, 2021
Exactly what I needed worked perfect for my fourwheeler
Customer
Reviewed in the United States on January 27, 2021
Fast shipping. Worked perfect for rebuild on 2012 trx 400x. Would buy again.
Customer
Reviewed in the United States on May 17, 2019
It all went together good ..looks good ..let u know how it runs...everything nice and neat!.....up date ...out running yzf450!!!! Nasty!!!
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