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  See more parts for Subaru BRZ
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HKS Piston Full Kit FA20 2.1L (Low comp) Subaru BRZ 2013-2020 - 21004-AT003

HKS Low Compression Kit 21004-AT003 for Subaru BRZ FA20 (2013-2020)

Ready to take your Subaru BRZ to the next level? The HKS Low Compression Kit 21004-AT003 is designed specifically for the FA20 engine, making it an ideal choice for those looking to enhance their vehicle's tuning potential. This kit is perfect for high boost applications, allowing you to maximize performance with confidence.

Key Features

  • Pistons:
    • Forged material for exceptional durability.
    • Cavity design on the piston head optimizes fuel atomization during injection.
    • 3D piston crown design enhances tumble flow for improved combustion.
    • Recessed piston to accommodate high lift HKS camshafts.
    • Flexible compression ratio settings based on gasket thickness.
    • Molybdenum coating reduces friction for smoother operation.
  • Connecting Rods:
    • Cracked con rods tailored for the longer stroke, ensuring compatibility.
    • Special crank pin sizes eliminate the need for engine modifications.
    • Requires separate purchase of Nissan genuine bearing for RB26 and SR.
    • High-strength I-beam design with revised bolt sizes for enhanced reliability.
  • Crankshaft Stroke:
    • 90.0mm stroke crafted from HKS's special forged materials.
    • Optimized pin journal size through meticulous analysis for extended stroke efficiency.
    • Carefully balanced weights for maximum engine performance.
  • Stock Bore Compatibility:
    • Maintains stock bore size of 86.0mm to preserve engine block integrity.
    • Cost-effective solution—no need for boring, honing, or additional parts like cylinder liners.

Fitment

This kit is compatible with:

  • Subaru BRZ FA20 (2013-2020)

Customer Feedback

Users have reported noticeable improvements in their vehicle's performance after installing the HKS 21004-AT003 kit. Many appreciate the seamless integration with their Subaru BRZ, allowing for impressive power gains without compromising reliability. The durability of the forged pistons and the efficient design of the connecting rods have been particularly praised, making this kit a favorite among enthusiasts looking to push their FA20 engine to new heights.

Other Part Numbers:
HKS #hks21004-AT003

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2013-2020
 Subaru BRZ

Since its beginning, HKS has been committed to providing well-integrated, reliable,and environmentally sound performance systems. Mr. Hasegawa's strong leadership, engineering genius, creativity and willingness to listen to customers are the pillars of the company's success. Monitoring consumer reaction and input on issues pertaining to material quality, external appearance, sound quality, and of course, performance, HKS stays in tune with automotive enthusiasts' needs. Moreover, HKS' products are designed to be user friendly for easy installation.

Warranty for Exhaust System

HKS provides a warranty to the original purchaser of HKS exhaust systems against defects in materials and workmanship for a period of one year. The warranty applies only for vehicle specific exhaust systems. Other products such as metal catalyzers, front pipes, exhaust manifolds, and center pipes are not covered.

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