Short Blocks, Long Blocks & Heads

Price Price
Brand Brand


IAG Piston Wrist Pin Access Cover w/ Seals Kit, '04-'21 STi & '06-'14 WRX
Available For Order!

IAG Piston Wrist Pin Access Cover w/ Seals Kit, '04-'21 STi & '06-'14 WRX

$125.99

IAG Willall Billet Case Halves, 2004-2021 STi & 2006-2014 WRX
Available For Order!

IAG Willall Billet Case Halves, 2004-2021 STi & 2006-2014 WRX

$11,549.99

IAG Long Block Basic Installation Kit, 2008-2021 STi
Available For Order!

IAG Long Block Basic Installation Kit, 2008-2021 STi

$1,999.99

IAG Stage X Billet Short Block, 2002-2014 WRX & 2004-2021 STi
Available For Order!

IAG Stage X Billet Short Block, 2002-2014 WRX & 2004-2021 STi

$17,599.99

Subaru (OEM) Cylinder Head Casting w/ Valves (Left Hand), '18 STi Type RA & '19-'21 STi
Available For Order!

Subaru (OEM) Cylinder Head Casting w/ Valves (Left Hand), '18 STi Type RA & '19-'21 STi

$1,019.08

Subaru (OEM) Cylinder Head Casting (Left), '18 STi Type RA & '19-'21 STi
Available For Order!

Subaru (OEM) Cylinder Head Casting (Left), '18 STi Type RA & '19-'21 STi

$976.00

Subaru (OEM) Engine Block Halves, 2018 STi Type RA & 2019-2021 STi
Available For Order!

Subaru (OEM) Engine Block Halves, 2018 STi Type RA & 2019-2021 STi

$1,682.63

Subaru (OEM) Cylinder Head Casting (Left Hand), '18 STi Type RA & '19-'21 STi
Available For Order!

Subaru (OEM) Cylinder Head Casting (Left Hand), '18 STi Type RA & '19-'21 STi

$976.00

Subaru (OEM) Cylinder Head Casting w/ Valves (Right Hand), '18 STi Type RA & '19-'21 STi
Available For Order!

Subaru (OEM) Cylinder Head Casting w/ Valves (Right Hand), '18 STi Type RA & '19-'21 STi

$1,019.00

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves (No Cams/Buckets, N25), '19-'21 STi
Available For Order!

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves (No Cams/Buckets, N25), '19-'21 STi

$3,629.99

IAG Stage 3 Cylinder Heads (No Cams/Buckets, W25 Castings), '08-'18 STi
Available For Order!

IAG Stage 3 Cylinder Heads (No Cams/Buckets, W25 Castings), '08-'18 STi

$3,629.99

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves (N25 Casting), '19-'21 STi
Available For Order!

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves (N25 Casting), '19-'21 STi

$5,499.99

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves & S2 Cams (W25 Castings), '08-'18 STi
Available For Order!

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves & S2 Cams (W25 Castings), '08-'18 STi

$5,499.99

IAG Stage 4 Cylinder Heads w/ +1mm Valves & GSC S3 Cams (N25), '19-'21 STi
Available For Order!

IAG Stage 4 Cylinder Heads w/ +1mm Valves & GSC S3 Cams (N25), '19-'21 STi

$6,299.99

IAG Stage 4 Cylinder Heads w/ +1mm Valves & GSC S3 Cams (W25 Casting), '08-'18 STi
Available For Order!

IAG Stage 4 Cylinder Heads w/ +1mm Valves & GSC S3 Cams (W25 Casting), '08-'18 STi

$6,299.99

IAG 1150 CNC Ported Drag N25 Cylinder Heads (No Cams & Lifters), '19-'21 STi
Available For Order!

IAG 1150 CNC Ported Drag N25 Cylinder Heads (No Cams & Lifters), '19-'21 STi

$6,099.99

IAG 1150 CNC Ported Drag N25 Cylinder Heads w/ GSC S2 Cams & Lifters, '19-'21 STi
Available For Order!

IAG 1150 CNC Ported Drag N25 Cylinder Heads w/ GSC S2 Cams & Lifters, '19-'21 STi

$7,799.99

IAG 1150 CNC Ported Drag N25 Cylinder Heads w/ GSC S3 Cams & Lifters, '19-'21 STi
Available For Order!

IAG 1150 CNC Ported Drag N25 Cylinder Heads w/ GSC S3 Cams & Lifters, '19-'21 STi

$7,799.99

IAG 1150 CNC Ported Drag W25 Cylinder Heads (No Cams & Lifters), '08-'18 STi
Available For Order!

IAG 1150 CNC Ported Drag W25 Cylinder Heads (No Cams & Lifters), '08-'18 STi

$6,099.99

IAG 1150 CNC Ported Drag W25 Cylinder Heads w/ GSC S2 Cam & Lifters, '08-'18 STi
Available For Order!

IAG 1150 CNC Ported Drag W25 Cylinder Heads w/ GSC S2 Cam & Lifters, '08-'18 STi

$7,799.99

IAG 1150 CNC Ported Drag W25 Cylinder Heads w/ GSC S3 Cam & Lifters, '08-'18 STi
Available For Order!

IAG 1150 CNC Ported Drag W25 Cylinder Heads w/ GSC S3 Cam & Lifters, '08-'18 STi

$7,799.99

IAG 550 Street N25 Cylinder Heads (No Cams & Lifters), 2019-2021 STi
Available For Order!

IAG 550 Street N25 Cylinder Heads (No Cams & Lifters), 2019-2021 STi

$3,299.99

IAG 550 Street N25 Cylinder Heads w/ GSC S1 Cams & Lifters, '19-'21 STi
Available For Order!

IAG 550 Street N25 Cylinder Heads w/ GSC S1 Cams & Lifters, '19-'21 STi

$4,999.99

IAG 550 Street W25 Cylinder Heads w/ GSC S1 Cam & Lifters, '08-'18 STi
Available For Order!

IAG 550 Street W25 Cylinder Heads w/ GSC S1 Cam & Lifters, '08-'18 STi

$4,999.99

IAG 750 CNC Pocket Ported N25 Competition Cylinder Heads (No Cams & Lifters), '19-'21 STi
Available For Order!

IAG 750 CNC Pocket Ported N25 Competition Cylinder Heads (No Cams & Lifters), '19-'21 STi

$4,099.99

IAG 750 CNC Pocket Ported N25 Competition Cylinder Heads w/ GSC S1 Cams & Lifters, '19-'21 STi
Available For Order!

IAG 750 CNC Pocket Ported N25 Competition Cylinder Heads w/ GSC S1 Cams & Lifters, '19-'21 STi

$5,999.99

IAG 750 CNC Pocket Ported W25 Competition Cylinder Heads (No Cams & Lifters), '08-'18 STi
Available For Order!

IAG 750 CNC Pocket Ported W25 Competition Cylinder Heads (No Cams & Lifters), '08-'18 STi

$4,099.99

IAG 750 CNC Pocket Ported W25 Competition Cylinder Heads w/ GSC S1 Cam & Lifters, '08-'18 STi
Available For Order!

IAG 750 CNC Pocket Ported W25 Competition Cylinder Heads w/ GSC S1 Cam & Lifters, '08-'18 STi

$5,999.99

IAG 950 CNC Ported Race N25 Cylinder Heads (No Cams & Lifters), '19-'21 STi
Available For Order!

IAG 950 CNC Ported Race N25 Cylinder Heads (No Cams & Lifters), '19-'21 STi

$4,899.99

IAG 950 CNC Ported Race N25 Cylinder Heads w/ GSC S2 Cams & Lifters, '19-'21 STi
Available For Order!

IAG 950 CNC Ported Race N25 Cylinder Heads w/ GSC S2 Cams & Lifters, '19-'21 STi

$6,599.99

IAG 950 CNC Ported Race W25 Cylinder Heads (No Cams & Lifters), '08-'18 STi
Available For Order!

IAG 950 CNC Ported Race W25 Cylinder Heads (No Cams & Lifters), '08-'18 STi

$4,899.99

IAG 950 CNC Ported Race W25 Cylinder Heads w/ GSC S2 Cam & Lifters, '08-'18 STi
Available For Order!

IAG 950 CNC Ported Race W25 Cylinder Heads w/ GSC S2 Cam & Lifters, '08-'18 STi

$6,599.99

IAG 550 Street W25 Cylinder Heads (No Cams & Lifters), 2008-2018 STi
Available For Order!

IAG 550 Street W25 Cylinder Heads (No Cams & Lifters), 2008-2018 STi

$3,299.99

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S2 Camshafts, '08-'21 STi
Available For Order!

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S2 Camshafts, '08-'21 STi

$18,199.99

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S2 Camshafts, '19-'21 STi
Available For Order!

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S2 Camshafts, '19-'21 STi

$18,199.99

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S3 Camshafts, '08-'21 STi
Available For Order!

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S3 Camshafts, '08-'21 STi

$18,199.99

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S3 Camshafts, '19-'21 STi
Available For Order!

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S3 Camshafts, '19-'21 STi

$18,199.99

IAG 550 Long Block Engine w/ IAG 550 Heads, 2008-2021 STi
Available For Order!

IAG 550 Long Block Engine w/ IAG 550 Heads, 2008-2021 STi

$9,799.99

IAG 550 Long Block Engine w/ IAG 550 Heads, 2019-2021 STi
Available For Order!

IAG 550 Long Block Engine w/ IAG 550 Heads, 2019-2021 STi

$9,799.99

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads, 2008-2021 STi
Available For Order!

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads, 2008-2021 STi

$12,499.99

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads, 2019-2021 STi
Available For Order!

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads, 2019-2021 STi

$12,499.99

IAG 750 EJ25 Closed Deck Case (No Bore/Hone w/ 11mm HSM), '04-'21 STi & '06-'14 WRX
Available For Order!

IAG 750 EJ25 Closed Deck Case (No Bore/Hone w/ 11mm HSM), '04-'21 STi & '06-'14 WRX

$2,699.99

IAG 750 EJ25 Closed Deck Case (w/ Bore/Hone w/ 11mm HSM), '04-'21 STi & '06-'14 WRX
Available For Order!

IAG 750 EJ25 Closed Deck Case (w/ Bore/Hone w/ 11mm HSM), '04-'21 STi & '06-'14 WRX

$2,949.99

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads, 2008-2021 STi
Available For Order!

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads, 2008-2021 STi

$13,699.99

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads, 2019-2021 STi
Available For Order!

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads, 2019-2021 STi

$13,699.99

IAG 950 EJ25 Closed Deck Case (No Bore/Hone / 14mm HSM, Fire-Lock), '04-'21 STi & '06-'14 WRX
Available For Order!

IAG 950 EJ25 Closed Deck Case (No Bore/Hone / 14mm HSM, Fire-Lock), '04-'21 STi & '06-'14 WRX

$3,049.99

IAG 950 EJ25 Closed Deck Case (w/ Bore/Hone / 14mm HSM, Fire-Lock), '04-'21 STi & '06-'14 WRX
Available For Order!

IAG 950 EJ25 Closed Deck Case (w/ Bore/Hone / 14mm HSM, Fire-Lock), '04-'21 STi & '06-'14 WRX

$3,399.99

IAG 950 EJ25 Closed Deck Short Block - 950 BHP, '04-'21 STi & '06-'14 WRX
Available For Order!

IAG 950 EJ25 Closed Deck Short Block - 950 BHP, '04-'21 STi & '06-'14 WRX

$6,299.99