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MK1000953
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 MK1000953
- Includes: NICHE Cylinder Piston Gasket Kit
- Compatible with the following brands: Honda
- Compatible with the following models: Rancher 350
- Replaces for the following OEM MPN's: 12100-HN5-670, 13010-HN5-671,13101-HN5-670, 13111-HC0-000,13112-HN5-670, 12251-HN5-671,98069-57916, 12191-HN5-670
- 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.
Branden
August 22, 2025
Had piston slap upon assembly. Ended up using the old Honda piston with the new rings jug and wrist pin. Everything seems nice except the piston. I think this kit can be bought with a nice piston, that's what I'd recommend.
Jerran harding
August 10, 2025
I bought this product a few months back because my original top end started smoking and i do have this 4 wheeler set up for deep water so i do have everything sealed and it only got water in the top end one time and i didnt try to start it till i got the spark plug out and get the water out then continued to ride then 3 or 4 rides later down the road it continued to act up and would only high idle and now it wont start and only has 30 psi of compression and it was fresh water
Yovana Sarabia
June 29, 2025
I bought some things from this company, starte, drive clutch and more, but they was defective, the last one was a cylinder, looks good but when I installed this start to make a noise. now Im not buying nothing from NICHE I hear more person talking about this defectives parts compani
Dallas Trost
June 8, 2025
The media could not be loaded.
Scott Goff
May 6, 2025
It is junk.
steven smith
April 19, 2025
The NICHE pistons are too small , they why everyone hears a rattle with these kits, too much clearance. The cylinders work great if you install a different brand of piston.. I use a Numura Piston and rings in the NICHE cylinder, works sounds perfect. There are other aftermarket cylinder kits I have used and the Rings are too large.
Derek D. Pinckney
April 8, 2025
there is a knock between the wrist pin and rod.
Jeremy evans
March 16, 2025
Was wondering if anyone else was having problems with the piston and ring kits had the mechanic put the hole top in on my honda 350es rancher and has a loud tick at the top he said when he took it out the box that it's was super tight fitting the piston in the sleeve runs but that loud tick has me worried don't want to ride it sounding like that should I have him take it back out and send it back
Colin ross
February 20, 2025
This fit perfectly and arc runs awesome now
Chris charron
January 18, 2025
Had my doubts being so cheap. Upon opening the box parts were of OEM style and quality. Install was easy and quad runs well.Would purchase again.
leingis boucher
December 8, 2024
The media could not be loaded.
Ron
November 24, 2024
Bike went from a oil burner to a clean running machine I’m happy with it , quality seemed on point
boyd primeau
November 14, 2024
This cylinder / piston and gasket set was replacement that a customer asked me to install ,on there Honda 350 atv ,I did not like the honing marks in the cylinder in one area could see level honing marks with a lighter 30 degree marks above , I used a ball hone to rehone the cylinder and properly cleaned , the piston and rings looked good , the piston pin fit nice in the piston , I did not like the very weak spring feel of the piston pin clips , felt very cheap , I used different pin clips , the cylinder base gasket did not line up with the 2 outer m6 bolt holes completely, I had to cut out slightly egg shaped so gasket would not buckle when pushed to line up these holes , installed cylinder , the metal head gasket would not fit over the 2 dowel pins on top of cylinder , would fit on one or the other but not on both , had to use fine grinding stone to enlarge holes slightly for gasket to fit , after finished job , quad runs and sounds good , customer is happy .someone without my experience might have found this kit more difficult to make changes and adjust , with some better quality control from manufacturer I think would be a good affordable product for customers.
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