JE Pistons 274197S Yamaha Raptor 250 Forged Single Piston SRP

The JE Pistons 274197S is a high-performance forged single piston designed for the Yamaha Raptor 250. Part of JE's renowned SRP (Sportsman Racing Products) line, this piston is engineered for riders who demand superior reliability and performance from their ATV engine build.

Key Features:

• Forged 4032 aluminum alloy construction for exceptional strength with low thermal expansion and reduced noise — ideal for performance street and select racing applications
• Designed, forged, and machined in-house at JE's facility, ensuring full quality control at every stage of production
• Ultra Groove® ring groove machining delivers unprecedented flatness tolerances to within millionths of an inch for superior ring seal
• Ultra Crown® digital 3D crown machining for precise combustion chamber geometry
• Finite Element Analysis (F.E.A.) used in development to simulate thermal and structural stresses before the piston ever enters service
• Single piston — ideal for replacement or selective fitment during engine rebuilds
• Manufactured to OEM-exceeding tolerances using advanced CNC machining technology

Note: This product is not CARB compliant and is not legal for sale or use in California.

JE Pistons is the world's largest manufacturer of custom-forged racing pistons, trusted by professional engine builders and high-performance enthusiasts for over 70 years. The 274197S delivers the quality and durability that JE is known for in a single-piston format, perfect for precision engine assembly.