KTM SX 125 1987-1993 GRADE B 54.20mm DOME TOP

Vertex Grade B 54.20mm Dome Top Piston

The Vertex Grade B 54.20mm dome top piston is engineered for riders seeking precision, durability, and high-performance reliability. Vertex utilizes advanced manufacturing techniques and exotic Low-Ex silicon-charged aluminum alloys to ensure optimal thermal expansion control and structural integrity under demanding engine conditions.

Every piston is crafted using either gravity casting or hydraulic forging, followed by a sophisticated heat treatment process in an automated implant to refine the material structure. This ensures that the piston maintains its shape and strength during high-stress operations.

Key Features

• Advanced Alloy Construction: Manufactured with specialized aluminum alloys charged with high-percentage silicon for superior heat resistance and durability.
• Precision Machining: CNC-machined using diamond-tipped tooling to achieve exact surface finishes tailored to specific engine requirements.
• Dual-Layer Coating Technology: Features a Molybdenum Bisulphite black coating to reduce friction and facilitate a smoother engine break-in process.
• Enhanced Durability: Incorporates a secondary all-over Phosphate coating. This development, inspired by Formula One technology, increases surface hardness and improves the adhesion of the Molybdenum layer, effectively doubling the coating durability.
• Strict Quality Control: Each unit undergoes rigorous manual and automated testing to meet high manufacturing standards for consistent performance.

By combining cutting-edge metallurgy with precision engineering, the Vertex dome top piston provides a reliable solution for rebuilding or upgrading your engine. The specialized coatings help maintain optimal internal tolerances while reducing operational friction for a more efficient ride.