Description
Check the specifications, dimensions, variation details, referenced part numbers, and available fitment evidence before matching this item to an application.
| Manufacturer | Mishon Inc |
|---|---|
| Brand | NICHE |
| Model | Bear Tracker 250,Timberwolf 250,Moto-4 250 YFM250 |
| Item Weight | 14.9 pounds |
| Product Dimensions | 12 x 12 x 12 inches |
| Country of Origin | China |
| Item model number | MK1001266 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | MK1001266 |
| OEM Part Number | 4BD-11101-03, 4BD-11310-01-00, 4BD-11631-00-Y0 |
| Safety Rating | DOT Certified |
Product Description
MK1001266
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 Head Piston Gasket Kit Part Number MK1001266
- Includes: NICHE Cylinder Head Piston Gasket Kit
- Compatible with the following brands: Yamaha
- Compatible with the following models: Timberwolf 250, Bear Tracker 250
- Replaces for the following OEM MPN’s: 29U-11310-03-00, 3GH-11310-01-00, 4BD-11310-01-00, 4BD-11631-00-Y0, 29U-11631-00-Y0, 5VC-11351-02-00, 5VC-11351-02-00
- Compatible Vehicle: ATV
- Placement on Vehicle: Front
- Cylinder Bore Size: 92mm
- Cylinder Displacement: 229.6cc; Compression 8.7:1
- Cylinder Material: ADC12 aluminum
- Piston Bore Size: 71mm
- Piston Surface Coating: Tin-Plated
- Piston Material: Aluminum Alloy;Type: Dish
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 CYLINDER HEAD
- A cylinder head is usually located on the top of the engine block
- It serves as a housing for components such as the intake and exhaust valves, springs and lifters and the combustion chamber
- The passages in the cylinder head allow air and fuel to flow inside the cylinder while permitting the exhaust gases to flow out of it
- The cylinder head uses a gasket that aids in preventing water or oil from leaking into the combustion chambers
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.
Michael A Benninger –
The replacement parts were bolt on ready. I didn’t have to alter anything to make them fit. The gaskets worked great. There is a O ring the kit does not have in it for the oil passage to the cylinder head. It is located on one of the head bolts.
Bobby –
Great product good service