KTM 520/525 Pro Series JE Piston Kit Standard Bore 274175

This JE "Pro Series" piston kit is specially designed for demanding high performance applications and feature purpose-built forging designs that reduce overall piston weight without sacrificing strength or durability.  The addition of internal and external strut braces significantly reduces stress on critical areas and improves ring groove flatness for improved ring seal during operation.  JE Pro Series kits provide the performance needed by top engine builders such as Pro Circuit and JGRMX, with the durability required by weekend riders.

• Internal and External bracing
• Ultra-Flat ring grooves
• Low Friction Skirt
• Ultra light weight
• Hand de-burred - Requires no de-burring or preparation
• 2618-T6 Forging
• FSR Design
• Pin, locks and JE Pro Seal piston rings included