Vertex Top End Piston Kit Cylinder kitRef : VER00579A / 1128191004

Manufacturer Reference: VTK24212D-2
Brand: VERTEX — Category: Top-end Kit (Cross)

VERTEX top-end kit designed for 85 cc two-stroke engines, intended for engine restoration or preparation with oversize D. This kit combines a cylinder Ø 47 mm and a cast aluminum piston Ø 46.970 mm for a displacement of 85 cc. Vertex pistons are gravity cast from an aluminum alloy enriched with 18% silicon, a material choice that limits thermal expansion and improves dimensional stability at high temperatures.

Observable technical advantages:

• Compression: standard (STD), suitable for original configurations.
• Silicon-rich alloy: reduces dimensional variation due to operating temperature.
• Controlled wear: silicon improves abrasion resistance at the piston skirt.
• Oversize D: allows for restoration after wear or implementation of a specific re-boring.

Compatible with models:

• KTM 85 SX (2018-2023) and variants 17/14
• HUSQVARNA TC/85 (2018-2023)
• GAS GAS MC 85 (models 19/16 and 17/14 depending on the year)

This product is intended for demanding riders and mechanics looking for a reliable replacement part for 85 cc two-stroke engines. Please check the precise compatibility with your registration document and serial number before installation.