"In the category of Pistons and Piston Kits, Pistons"

PST029 Description 250cc Piston K172FMM for XF250GY, QM250GY-D

The piston in a motorcycle engine is a cylindrical component that moves up and down within the engine's cylinder. It plays a crucial role in the combustion process by transferring the force generated from burning fuel-air mixtures to the crankshaft, which ultimately drives the motorcycle.

Typically made from high-strength materials like aluminum or steel, pistons are designed to withstand high temperatures and pressures.

Specifications

Piston Diameter: 72mm
Gudgeon Pin Diameter: 18mm
Height (Including Skirt): 49mm
Height (Excluding Skirt): 41mm
Brand: CMPO
Classic Part: No
Cylinder Bore Diameter: 72 mm
Engine Type: 4-stroke
Item Thickness: 18 mm
Items included: Piston
Machine Type: Street Motorcycle
Manufacturer Part Number: PST029
Manufacturer Warranty: 1 Year
Material: Steel
Mounting Style: Screw-In
Performance Part: No
Pin Diameter: 18 mm
Reference OE/OEM Number: 121000091
Type: Piston
Universal Fitment: No

PSTR028 Description 250cc Piston Rings K172FMM for XF250GY, QM250GY-D

Piston rings are critical components in a motorcycle engine, located on the outer surface of the piston. They serve several key functions:

Sealing: Piston rings create a seal between the piston and the cylinder wall, preventing the escape of combustion gases into the crankcase and ensuring efficient power generation.

Compression: By sealing the combustion chamber, piston rings help maintain the necessary compression pressure for engine performance.

Oil Control: They manage the oil flow between the piston and cylinder wall, ensuring that the correct amount of oil is present for lubrication and reducing oil consumption and emissions.

Typically made from high-strength materials like cast iron or steel, piston rings are designed to withstand high temperatures and pressures. Proper maintenance and timely replacement of piston rings are essential for maintaining engine performance, efficiency, and longevity.

Details

These piston rings will fit 250cc motorcycle engines with the following codes: K172FMM

Specifications

Brand: CMPO
Classic Part: No
Cylinder Bore Diameter: 72 mm
Engine Type: 4-stroke
Item Thickness: N/A
Items included: Piston Ring
Machine Type: Street Motorcycle
Manufacturer Part Number: PSTR028
Manufacturer Warranty: 1 Year
Material: Steel
Mounting Style: Screw-In
Performance Part: No
Pin Diameter: N/A
Piston Diameter: 72 mm
Reference OE/OEM Number: 121000092
Type: Piston Ring
Universal Fitment: No