Short Description: Restore your engine's compression and boost overall performance with this high-precision oversized piston set. Specifically designed for the Dnepr MT-11, these pistons are the ideal choice for a complete engine rebuild or a capacity upgrade to increase working volume.

Technical Specifications:

• Compatibility: Dnepr MT-11 (and compatible double-cylinder models)
• Manufacturer Code / SKU: MT801520, 252007, 252156, MT801514
• Part Type: Engine / Crank Gear

Purpose and Role in the Motorcycle (based on the original manual):
The piston is a central component of the Dnepr MT-11's crank gear, responsible for converting the energy of the air-fuel mixture's combustion into mechanical motion. This set is engineered with a specific 1.5 mm displacement of the piston pin hole from the longitudinal central plane, a critical design feature that ensures the piston moves smoothly and without impact within the cylinder walls as it reaches the upper dead centre.

To maintain engine efficiency, these pistons utilize a four-groove system: two upper compression rings to ensure airtightness in the combustion chamber and two lower oil scraper rings to prevent excessive oil from entering the combustion zone. Signs that it is time to replace your pistons include an increase in oil consumption (exceeding 0.25 l per 100 km), a significant drop in engine power, or the presence of deep scoring on the piston skirts during a carbon removal service. Because this is an oversized set, it is intended for use in conjunction with cylinder boring, which effectively refreshes the cylinder walls and can increase the engine's total displacement.

Benefits of Buying:

• Precision Engineering: Manufactured to strict technical specifications, including the essential 1.5mm pin offset for reduced engine vibration and wear.
• Enhanced Engine Life: By pairing these pistons with a professional bore, you eliminate cylinder ovality and restore factory-level compression.
• Optimized Sealing: Includes a complete ring set designed to minimize blow-by and significantly reduce oil consumption.