Overview
HKS 21004-AT004 Low Compression Kit for FA20 Engines
Ready to take your Subaru BRZ, Toyota 86, or Scion FR-S to the next level? The HKS 21004-AT004 Low Compression Kit is designed specifically for the FA20 engine, offering a perfect solution for high boost tuning in direct injection setups. This kit is ideal for enthusiasts looking to maximize performance and reliability.
Key Features
- Forged Pistons: Engineered for durability and strength, these pistons can handle the increased stress of high boost applications.
- I-Beam Con Rod: Lightweight yet robust, the I-beam design provides excellent strength-to-weight ratio, ensuring smooth operation at high RPMs.
- Crankshaft: Precision-engineered to support the enhanced power output, this crankshaft is crucial for maintaining performance under pressure.
Specifications
- Engine Type: FA20 2.1L
- Compression Ratio: Low compression for high boost applications
- Compatibility: Subaru BRZ, Toyota 86, Scion FR-S
Customer Feedback
Many users have reported noticeable improvements in their vehicle’s performance after installing the 21004-AT004 kit. The combination of forged pistons and a robust crankshaft allows for higher boost levels while maintaining engine integrity. Enthusiasts appreciate the kit’s ability to support significant power upgrades without compromising reliability.
Why Choose HKS?
HKS is a trusted name in the performance tuning industry, known for their commitment to quality and innovation. When you choose the 21004-AT004 kit, you’re investing in a product that has been rigorously tested and proven to deliver exceptional results.
Upgrade Your FA20 Engine
Take your tuning game to the next level with the HKS 21004-AT004 Low Compression Kit. Experience the thrill of high boost performance while enjoying the peace of mind that comes with using top-quality components designed for your vehicle.
Features:POINT-1 Piston
- Forged material improves durability.
- The cavity is designed in piston crown to optimize the atomization of fuel during injection.
- 3D Piston crown design to optimize tumble flow.
- The piston is recessed to match high lift HKS camshafts.
- The compression ratio range is widened depending on the gasket’s specification.
- Molybdenum coated pistons reduce friction.
POINT-2 Connecting RodsSTEP1
- Cracked connecting rod is chosen for the long stroke. The big end size is designed to omit modification of the engine block. (Nissan genuine bearing for RB26 and SR is required separately)
- Highly durable I-beam and cracked connecting rod are included. The connecting rod bolt size is optimized.
STEP2
- The thickness was optimized by strength analysis. The weight increase was minimized, and the strength was increased by approximately 30%.
- I-beam shape was selected to increase the buckling strength.
- The ideal shape was realized, and the fracture origin on the surface was eliminated by forged billet manufacturing. To improve fatigue strength, strong shot peening treatment is carried out on the surface.
- The optimum heat treatment for chrome molybdenum steel was carried out to improve both strength and toughness.
POINT-3 Crankshaft Stroke 90.0m
- The crankshaft is made from forged materials.
- Bespoke pin journal size is employed.
Fitment:
- Subaru BRZ FA20 2013-2020
Other Part Numbers:
HKS #hks21004-AT004
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Fitment
|
Make Vehicle |
Model | Year |
|---|---|---|
|
2013-2020 Subaru BRZ |
BRZ | 2013-2020 |
About Brand
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
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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