HKS 2.1L Low Comp STEP2 Capacity Up Grade Kit FA20 Engine
Capacity Upgrade Kit F120-21 Low Comp Step2
The low compression type FA20 2.1L Capacity Upgrade Kit for high boost tuning. Featuring newly developed high durable low compression pistons to take FA20 engine to the next level. Now available with Step2 billet I-beam conrods. The Step2 I-beam billet conrods was developed for the TRB-03 to deal with high output and high torque (approx. 700Nm) The buckling strength of the conrod is increased by approx. 30% when compared to conventional forged conrods.
Piston
- Forged material for improved durability
- Cavity is designed in the piston crown to optimise fuel atomization during injection
- 3D Pistons are recessed to match high lift HKS camshafts
- Wide compression ratio range depending on gasket specification
- Molybdenum coated pistons to reduce friction
Connecting Rods
- Designed to fit stock liners so boring/honing is not necessary
- High durability Step2 billiet I-Beam connecting rods
- Strength increased by approx. 30% when compared to conventional forged conrods
- Shot peening treatment to increase fatigue strength
- Optimised heat treatment for improved strength and toughness
Crankshaft
- Designed for 2.1L kit. Crank pin diameter is 48mm (Stock Pin 50mm)
- 90mm stroke
- Forged material
- Bespoke pin journal design
Engine
Displacement
Type
Honing
Flow
Code No.
RRP exVAT
Remarks
FA20
2091
036.0-022
No
No
21004-A1004
£2,900.00
Pistons/Rods/Crank
FA20
-
036.0-022
No
No
21003-AT004
£825.00
Low Comp
FA20
-
O22Pin
-
No
23004-AT002
£1,400.00
Billet. Only for 2.1L
FA20
-
90mm
-
-
23006-AT002
£1,900.00
Stroke 90mm
Engine
Displacement
Type
Honing
Flow
Code No.
RRP exVAT
Remarks
FA20
2091
036.0-022
No
No
21004-A1004
£2,900.00
Pistons/Rods/Crank
FA20
-
036.0-022
No
No
21003-AT004
£825.00
Low Comp
FA20
-
O22Pin
-
No
23004-AT002
£1,400.00
Billet. Only for 2.1L
FA20
-
90mm
-
-
23006-AT002
£1,900.00
Stroke 90mm
Specification
HKS 2.1L Low Comp Kit
Stock
Bore
036
036
Stroke
90.0mm
36.0mm
Displacement
2,091m1
1,998m1
HKS 2.1L Low Comp Kit
Stock
Bore
036
036
Stroke
90.0mm
36.0mm
Displacement
2,091m1
1,998m1
Compression ratio with stock cylinder head
Head Gasket
21004-AT002
21004-AT003
0.3mm
12.4
11.1
0.7mm
12.1
10.9
1.0mm
11.8
10.5
Head Gasket
21004-AT002
21004-AT003
0.3mm
12.4
11.1
0.7mm
12.1
10.9
1.0mm
11.8
10.5
This product is compatible with the following vehicles
| Vehicle Make | Vehicle Model | Vehicle Variant | From | To | Engine | Notes |
| Subaru | BRZ | 2012 | FA20 | 2.0L - RWD Petrol | ||
| Subaru | BRZ | 2012 | FA20 | 2.0L - RWD Petrol | ||
| Toyota | GT 86 | 2012 | 2.0L - RWD Petrol | |||
| Toyota | GT 86 | 2012 | 2.0L - RWD Petrol |
Whether it is engine, exhaust, suspension, or drive-train systems, there is no substitute for the performance, quality and reliability of HKS. Part-Box/Co-ordSport are an approved distributor for HKS performance and tuning products.
For over 35 years, HKS products have been put to the test in drag racing, road racing, rallying, and top speed trials. HKS equipped vehicles have captured numerous racing championships and hold claim to a myriad of competition records using many “off the shelf”, race proven HKS components. As a result, HKS has been synonymous with “performance” in the automotive aftermarket industry for the past 35+ years.
