JE PISTONS Piston Kit 274189

When you're pushing your engine to the absolute limit, your pistons need to match that intensity. JE PISTONS' Pro Series 274189 kit delivers the precision engineering and durability required for professional competition and extreme forced-induction applications. Built from 2618-T6 forged aluminum with internal bracing and specialized weight-reduction processes, these pistons give you the reliability to chase lap times without compromise.

Whether you're running a turbo setup on the track or optimizing your naturally aspirated engine, this kit arrives ready to install—no deburring, no prep work needed. Every piston is engineered with smooth-flowing dome geometry and dedicated accumulator grooves to handle spike pressures while maintaining efficiency across your powerband.

• Material: 2618-T6 forged aluminum
• Series: Pro Series (competition-grade)
• Internal bracing: Yes
• Weight reduction: Optimized forgings
• Dome design: Smooth flowing radii
• Accumulator groove: Included
• Forged side relief: Yes
• Installation: Bolt-on ready
• Includes: Pins, rings, locks
• Manufactured: U.S.A.
• MPN: 274189