Wiseco SK1199 Pro-Lite Top End Piston Kit Ski-Doo Mach Z 71.00mm Bore

The Wiseco SK1199 is a Pro-Lite forged top end piston kit designed for Ski-Doo Mach Z and Mach ZLT snowmobiles with cast iron cylinder bores. Featuring a 71.00mm bore size, this precision-matched and balanced kit is engineered as a direct replacement for the Rotax 779 and 809 series engines found in Formula Mach Z and related models. OEM cross-reference codes: 2434M07100 / 2795CD.

Kit Contents:

• High-performance forged Pro-Lite piston(s) — precision matched and balanced
• Wiseco ring set (CD-type — fits Wiseco pistons only)
• Alloy wrist pin(s)
• Circlips / wrist pin locks
• Top-end gasket kit

Why Wiseco Forged Pistons?

• Forged from high-silicon, low-expansion aluminum alloy for superior strength and reduced weight
• Condensed, aligned grain structure delivers higher mechanical properties and improved resistance to impact and fatigue versus cast pistons
• CNC-machined cam shape and profile optimized for peak horsepower and service life
• Diamond-turned finish ensures consistent sizing and a perfect bore fit
• Designed and forged entirely in the USA — Wiseco controls every stage from raw bar stock to skirt-coated finished part
• Validated on Wiseco's in-house dynos under real racing conditions

Important Notes:

• Wiseco ring types are not interchangeable with OEM or non-Wiseco rings — only Wiseco rings must be used with Wiseco pistons
• Designed for cast iron bore cylinders
• Cylinder sleeves are sold separately if resleeve is required

The SK1199 is the trusted choice for snocross racers and performance-minded recreational riders who demand the durability and precision that only a USA-forged piston kit can deliver.