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JE Pistons 17-21 Civic Type R Ultra Series 86mm Bore 10.0:1 Compression Ratio Piston Set
Part Number: 361278

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JE Pistons 17-21 Civic Type R Ultra Series 86mm Bore 10.0:1 Compression Ratio Piston Set
Part Number: 361278

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Not legal for sale or use in California on any pollution controlled motor vehicles.
2 In Stock

Product Details

Part Number: 361278
Brand: JE Pistons
Bore: 86mm
Compression Ratio: 10.0:1
Includes Piston Rings: Yes
CARB Approved: No

The JE Pistons Ultra Series for Honda K20C engines offers industry-leading forged pistons designed for high-performance and power-adder applications. Built with JE’s proprietary Aligned Grain Flow forging technology, these pistons deliver exceptional tensile strength to withstand the intense cylinder pressures experienced during high-boost builds. The set includes four pistons, each featuring an 86mm bore and a 10.0:1 compression ratio, ideal for aggressive tuning and racing setups. Crafted entirely in the USA, these pistons guarantee superior quality and durability for demanding engine modifications.

Each piston is equipped with advanced features, including a thermal barrier crown coating that reflects heat into the combustion chamber, lowering piston crown temperatures and enhancing exhaust gas scavenging. The high-strength wrist pins, manufactured by Trend Performance, are designed to handle the stresses of high-horsepower engines, ensuring reliable operation. The skirt coating reduces friction and wear on piston skirts and cylinder walls, which contributes to quieter operation, especially during cold starts.

Optimized pin oiling channels maintain proper lubrication of the wrist pins and small end, reducing heat, friction, and wear during intense engine operation. Lateral gas ports are incorporated to sustain a tight ring seal at the top compression ring, even under high RPM and boost conditions, maintaining consistent power output. Every aspect of the Ultra Series pistons is engineered to support high-performance, racing engines, making them an excellent choice for enthusiasts seeking durability and top-tier performance. As with all JE Pistons products, these pistons are made 100% in the USA, ensuring quality and craftsmanship.

Designed specifically for the Honda K20C engine with an 86mm bore, this set is perfect for those building a high-boost, high-horsepower engine. The combination of advanced forging technology, heat management features, and precision engineering makes the JE Ultra Series pistons a reliable upgrade for your performance build.

Features:

  • Aligned Grain Flow Technology: Maximizes tensile strength for high-performance engine environments
  • Thermal Barrier Crown Coating: Reflects heat into the combustion chamber, reducing piston crown temperatures
  • High-Strength Wrist Pins: Thick-wall pins designed for demanding power-adder builds
  • Skirt Coating: Reduces friction, wear, and operating noise during cold starts
  • Optimized Pin Oiling: Ensures proper lubrication of pins and small ends for durability
  • Lateral Gas Ports: Maintains ring seal at high RPM and boost conditions
  • Designed for Power: Engineered for high-horsepower racing engines
  • Made 100% in the USA: Ensures quality and reliability
Specifications:
  • Product Type: Engine Piston Kit
  • Piston Series: JE Ultra Series
  • Cylinder Head: K20C
  • Bore Diameter: 86.00 MM
  • Piston Head Type: Dome
  • Compression Height: 1.260 IN
  • Piston Volume: -0.27 CC
  • Piston Material: 2618
  • Forging Type: FSR
  • Ring Set Included: Yes
  • Top Compression Ring Thickness: 0.0480 IN
  • Second Compression Ring Thickness: 0.0480 IN
  • Oil Ring Thickness: 0.079 IN
  • Wrist Pin Material: 9310 Nickel Carbon Steel Alloy
  • Wrist Pin Outer Diameter: 0.866 IN
  • Wrist Pin Wall Thickness: 0.230 IN
  • Engine Detail: K20C Series
  • Product Market: Sport Compact

Not legal for sale or use in California on any pollution controlled motor vehicles. See http://www.semasan.com/emissions for state by state emissions requirements.
There is a 5% cancellation fee if you order this product and want to ship it to the state of California.

Due to the manufacturer's price control policy, this item may be excluded from promotions and discounts

WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.

Vehicle Fitment

Honda Civic
2017 Honda Civic Type R
2018 Honda Civic Type R
2019 Honda Civic Type R
2020 Honda Civic Type R
2021 Honda Civic Type R
2021 Honda Civic Type R Limited Edition

Engine Fitment

Honda 2.0L/1996CC - 4 Cylinder (K20C1)
Honda 2.0L/1996CC - 4 Cylinder (K20C1)

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