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

Designed to fit stock liners so boring/honing is not necessary

Connecting Rods

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

Designed for 2.1L kit. Crank pin diameter is 48mm (Stock Pin 50mm)

Crankshaft

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

Specification

HKS2.1L 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