WISECO Piston Kit with Gaskets PK1399

The stock piston in your RM-Z450 is a compromise between cost and durability—fine for casual riding, but it limits your engine's potential and can't handle sustained high-RPM abuse. The Wiseco PK1399 replaces that limitation with a purpose-built piston engineered for higher compression, reduced friction, and superior heat management, translating directly to more horsepower and longer engine life whether you're on the track or pushing hard in the dirt.

Wiseco's high silicon aluminum alloy with low thermal expansion resists the kind of stress that makes stock pistons fail—your engine runs cooler, more efficiently, and with measurably better throttle response. This is a bolt-on upgrade that delivers real performance gains without requiring internal engine work beyond the piston swap itself.

• Suzuki RM-Z450 (2005-2007)
• 12.0:1 compression ratio
• High silicon aluminum alloy
• Skirt coating reduces friction
• Low thermal expansion
• Increased horsepower output
• Precision-engineered durability
• Includes gasket set
• Bolt-on installation