Skip to product information
1 of 2

JE Pistons

JE Ultra Series Forged Piston Set - Honda K20C1 86mm

JE Ultra Series Forged Piston Set - Honda K20C1 86mm


Regular price $1,015.00
Regular price $1,093.80 Sale price $1,015.00
Sale Sold out

JE Pistons Ultra Series pistons for the Honda K20C1 combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick-wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. All of these premium features are included as standard in the Ultra Series, no upgrades are necessary. Premium, gas-nitrided carbon steel rings are included.


  • 2618 T6 high tensile strength forged aluminum

  • NEW SYMMETRICAL FSR (Forged Side Relief) forging! State of the art skirt technology reduces friction and mass while providing a more rigid and durable platform

  • Grain Flow Optimized forging technology

  • Premium 9310 tool steel thick wall wrist pins

  • Offset wrist pin bosses for quiet operation

  • FSR pistons feature new Smooth Finished Crown process for excellent flame travel, requiring no additional deburring or preparation

  • Ceramic thermal barrier crown coating

  • Lateral gas ports and accumulator grooves for improved ring sealing

  • Perfect Skirt coating reduces friction and noise

  • Pin fitting and wire locks included

  • Rings included


  • 86mm (3.386") bore

  • Piston Volume: -0.27 cc

  • Compression Ratio: 10.0:1

  • 1.2 x 1.2 x 2.8mm rings

  • 22mm (.866") x 0.230" wall 9310 wrist pins

Return Policy

You have 7 calendar days to return an item from the date you received it. To be eligible for a return, your item must be unused and in the same condition that you received it. Your item must be sealed in the original packaging. Your item needs to have a receipt or proof of purchase. Some exclusions apply.

For additional details see our Return & Refund Policy.

Installation Guides

To see all available installation and break-in instructions, click here.

Disclaimers & Legal

This part has been designed and is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards.

Click Here for emissions compliance information.

California Residents Prop 65 Information
California’s Proposition 65 entitles California consumers to special warnings for products that contain chemicals known to the state of California to cause cancer and birth defects or other reproductive harm if those products expose consumers to such chemicals above certain threshold levels. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information visit

View full details
  • Free Shipping Sitewide

    Orders of $100.00 or more are eligible for free ground shipping within the lower 48 US states. Some restrictions apply.

    Learn More 
  • Earn Rewards With Every Purchase

    Simply sign up for free and start earning points for every purchase you make. Redeem your points for discounts or exclusive mountune merchandise.

    Learn More