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Short Description: Restore your engine's compression and peak power with this precision-engineered set of piston rings. Essential for reducing oil consumption and ensuring the airtightness of your Dnepr MT-11's cylinders.

Technical Specifications:

• Compatibility: Dnepr MT-11 (Standard Bore)
• Manufacturer Code / SKU: 61-01217-01-P0
• Part Type: Engine / Crank Gear

Purpose and Role in the Motorcycle (based on the original manual):
The piston rings are critical components of the Dnepr MT-11's 649cc double-cylinder engine, serving two primary functions: sealing the combustion chamber and managing lubrication. The two upper compression rings provide the necessary airtightness to prevent high-pressure combustion gases from breaking through into the crankcase, which is vital for maintaining engine torque and fuel efficiency. The two lower rings act as oil scrapers; the third groove utilizes a specialized four-element steel scraper (consisting of disks and expanders), while the bottom groove employs a cast-iron ring to wipe excess oil from the cylinder walls. According to the technical manual, these rings must be replaced whenever oil consumption exceeds 0.25 liters per 100 km, or when a loss of compression is detected, as worn rings lead to power drops and increased engine contamination.

Benefits of Buying:

• Exact Factory Fit: Manufactured to the "Norma" 78.0mm standard, ensuring a precise seal without the need for immediate cylinder boring.
• Enhanced Oil Control: High-quality materials for the scraper rings effectively reduce oil blow-by, keeping your engine cleaner and reducing exhaust smoke.
• Restored Engine Efficiency: By eliminating gas leakage in the combustion chamber, these rings help restore the original horsepower and responsiveness of your MT-11.