Short Description: A heavy-duty, precision-engineered fastening nut designed to withstand extreme thermal stress. Essential for maintaining a gas-tight seal in your exhaust system and restoring the original reliability of your Dnepr MT-11.

Technical Specifications:

• Compatibility: Dnepr MT-11 (Model KM3-8.155.6) and compatible Dnepr series motorcycles.
• Manufacturer Code / SKU: MT801508-A
• Part Type: Engine / Exhaust System

Purpose and Role in the Motorcycle (based on the original manual):
The exhaust pipe nut is responsible for securing the exhaust manifold to the cylinder heads of the Dnepr MT-11's 649cc double-cylinder engine. Because this part is located at the point of highest thermal intensity, it must maintain a constant clamping force despite the repeated expansion and contraction of the metal during heat cycles. A failure in this nut—whether through stripping, corrosion, or loosening—leads to exhaust leaks, which not only increase noise and reduce engine efficiency but can also allow dangerous gases to escape near the rider. According to the technical manual, these nuts are subject to high risk of seizing; therefore, they must be treated with graphite lubricant (БВH-1) during installation to ensure they can be removed without damaging the exhaust studs during future maintenance.

Benefits of Buying:

• Exact match to factory specifications: Ensures a perfect fit and optimal clamping pressure, adhering to the same standards as the original OEM equipment.
• High Thermal Resistance: Manufactured from materials capable of enduring the intense heat of the exhaust port without losing structural integrity.
• Prevents Exhaust Leaks: Replacing worn or stripped nuts ensures a proper seal between the cylinder head and the pipe, protecting your engine's backpressure and improving overall performance.