Details
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