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Due to high volume of orders, please inquire about inventory if it is not directly listed on the product.

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18+ STI Motor Builds

New Provisions Racing Replacement Invidia Gasket Kit* Subaru - Universal

New Provisions Racing Replacement Invidia Gasket Kit* Subaru - Universal $47.99

ARP Pro Series Head Stud Kit 11mm - 02-14 WRX / 04-21 STI

ARP Pro Series Head Stud Kit 11mm - 02-14 WRX / 04-21 STI $221.57 $294.63

Subaru OEM Engine Gasket Kit - 08+ STI

Subaru OEM Engine Gasket Kit - 08+ STI $348.47

GSC Stainless Steel Intake Valves STD Size - 04+ STI / 02-14 WRX

GSC Stainless Steel Intake Valves STD Size - 04+ STI / 02-14 WRX $121.38

ARP Custom Age 625+ Head Stud Kit 11mm - 02-14 WRX / 04-21 STI

ARP Custom Age 625+ Head Stud Kit 11mm - 02-14 WRX / 04-21 STI $568.36 $721.47

Subaru OEM Valve Cover Gasket - 04+ STI / 06-14 WRX

Subaru OEM Valve Cover Gasket - 04+ STI / 06-14 WRX $22.38

King Engine Bearings Standard Connecting Rod Bearing Set - 02-14 WRX / 04-19 STI

King Engine Bearings Standard Connecting Rod Bearing Set - 02-14 WRX / 04-19 STI $58.00

IAG Wrist Pin / Cover Seal Kit - Subaru EJ25 Short Blocks

IAG Wrist Pin / Cover Seal Kit - Subaru EJ25 Short Blocks $125.99

Gates Timing Belt Kit w/ Water Pump - 04-20 STI / 05-07 WRX

Gates Timing Belt Kit w/ Water Pump - 04-20 STI / 05-07 WRX $233.42 $331.51

Subaru OEM Water Pump and Gasket - 02-07 WRX / 04-18 STI

Subaru OEM Water Pump and Gasket - 02-07 WRX / 04-18 STI $145.95 $150.53

GSC Viton 6mm Valve Seal Set - EJ205 / EJ207 / EJ257

GSC Viton 6mm Valve Seal Set - EJ205 / EJ207 / EJ257 $12.94

GSC Stainless Steel Exhast Valves STD Size - 04+ STI / 02-14 WRX

GSC Stainless Steel Exhast Valves STD Size - 04+ STI / 02-14 WRX $114.58 $134.80

GSC Beehive Spring Set w/ Titanium Retainers - 04+ STI / 02-14 WRX

GSC Beehive Spring Set w/ Titanium Retainers - 04+ STI / 02-14 WRX $386.39

Gates Timing Belt Kit - 04+ STI / 04-14 WRX

Gates Timing Belt Kit - 04+ STI / 04-14 WRX $196.25 $249.76

King Engine Bearings Standard Size Main Bearing Thrust Bearing #5 - 02-14 WRX / 04-19 STI

King Engine Bearings Standard Size Main Bearing Thrust Bearing #5 - 02-14 WRX / 04-19 STI $98.00

GSC Stopper Style Intake Valve Guide - Subaru EJ20 / EJ25

GSC Stopper Style Intake Valve Guide - Subaru EJ20 / EJ25 $41.45

GSC Stopper Style Exhaust Valve Guide - Subaru EJ20 / EJ25

GSC Stopper Style Exhaust Valve Guide - Subaru EJ20 / EJ25 $41.45

IAG Stage 2 2.5L Subaru Short Block - EJ WRX/STI/LGT/FXT

IAG Stage 2 2.5L Subaru Short Block - EJ WRX/STI/LGT/FXT $3,799.99

Subaru OEM Crankshaft Rear Seal - 02-14 WRX / 04-20 STI

Subaru OEM Crankshaft Rear Seal - 02-14 WRX / 04-20 STI $12.25

Manley Platinum Series Piston Set 99.5mm 8.5:1 - 06-14 WRX / 04-18 STI

Manley Platinum Series Piston Set 99.5mm 8.5:1 - 06-14 WRX / 04-18 STI $541.35 $636.88

Manley Forged Steel H-Tuff Beam Connecting Rods Set - 02-14 WRX / 04+ STI

Manley Forged Steel H-Tuff Beam Connecting Rods Set - 02-14 WRX / 04+ STI $466.72 $549.08

Gates Racing Timing Belt Kit w/ Water Pump - 04-20 STI / 06-07 WRX

Gates Racing Timing Belt Kit w/ Water Pump - 04-20 STI / 06-07 WRX $383.76

Subaru OEM Spark Plug Well Gaskets - 04+ STI / 02-14 WRX

Subaru OEM Spark Plug Well Gaskets - 04+ STI / 02-14 WRX $9.95

GrimmSpeed Blow Off Valve Flange Gasket - 02-07 WRX / 04-20 STI

GrimmSpeed Blow Off Valve Flange Gasket - 02-07 WRX / 04-20 STI $13.00

Subaru OEM Air Conditioning Belt Set - 08-18 WRX/STI

Subaru OEM Air Conditioning Belt Set - 08-18 WRX/STI $82.95

GSC Power-Division Camshafts S2 Camshafts - 08-18 STI

GSC Power-Division Camshafts S2 Camshafts - 08-18 STI $998.75

Subaru OEM 2.5L STI Type RA / 2020 STI Short Block

Subaru OEM 2.5L STI Type RA / 2020 STI Short Block $2,186.00

Subaru OEM Timing Belt Kit - 04+ STI / 04-14 WRX

Subaru OEM Timing Belt Kit - 04+ STI / 04-14 WRX $536.85 $621.70

Orbit High Pressure Oil Pump - EJ20/22/25

Orbit High Pressure Oil Pump - EJ20/22/25 $209.30 $275.52

IAG Stage 2.5 EJ25 Subaru Closed Deck Short Block - WRX/STI/LGT/FXT

IAG Stage 2.5 EJ25 Subaru Closed Deck Short Block - WRX/STI/LGT/FXT $4,799.99

GSC Super Alloy Exhaust Valves STD Size - 04+ STI / 02-14 WRX

GSC Super Alloy Exhaust Valves STD Size - 04+ STI / 02-14 WRX $199.92

Company23 Timing Belt Guide Kit - 02-14 WRX / 04+ STI

Company23 Timing Belt Guide Kit - 02-14 WRX / 04+ STI $54.95

OEM-Quality Timing Belt Kit - 04+ STI / 04-14 WRX

OEM-Quality Timing Belt Kit - 04+ STI / 04-14 WRX $379.52 $621.70

Subaru Cylinder Head Gasket - 07-18 STI

Subaru Cylinder Head Gasket - 07-18 STI $49.95

Manley Performance Platinum Series Piston STD Bore "Drop-Ins" - 04-19 STI

Manley Performance Platinum Series Piston STD Bore "Drop-Ins" - 04-19 STI $145.80 $171.53

IAG Stage 2 Tuff 2.5L Subaru Short Block - EJ WRX/STI/LGT/FXT

IAG Stage 2 Tuff 2.5L Subaru Short Block - EJ WRX/STI/LGT/FXT $4,199.99

GSC EJ Valve Spring Seats OEM Style Replacements - EJ205 / EJ207 / EJ257

GSC EJ Valve Spring Seats OEM Style Replacements - EJ205 / EJ207 / EJ257 $20.40 $24.00

IAG Performance Adjustable Timing Idler Kit - 02-14 WRX / 04-20 STI , EJ20/EJ25

IAG Performance Adjustable Timing Idler Kit - 02-14 WRX / 04-20 STI , EJ20/EJ25 $179.99

Subaru OEM Forged Salt Bath Nitrated Crankshaft - 06-14 WRX / 04-21 STI

Subaru OEM Forged Salt Bath Nitrated Crankshaft - 06-14 WRX / 04-21 STI $407.23

Manley Valve Spring & Titanium Retainer Set - 04+ STI / 02-14 WRX

Manley Valve Spring & Titanium Retainer Set - 04+ STI / 02-14 WRX $242.47 $285.26

Manley Platinum Series Piston Set 99.75mm 9.8:1 - 06-14 WRX / 04-18 STI

Manley Platinum Series Piston Set 99.75mm 9.8:1 - 06-14 WRX / 04-18 STI $541.35 $636.88

Gates Racing Timing Belt Kit - 04+ STI / 04-14 WRX

Gates Racing Timing Belt Kit - 04+ STI / 04-14 WRX $306.95 $671.54

GrimmSpeed EJ25 Head Gasket Set - Multiple Thicknesses - 04-20 STI / 02-14 WRX

GrimmSpeed EJ25 Head Gasket Set - Multiple Thicknesses - 04-20 STI / 02-14 WRX $139.00

Subaru OEM Driver Side AVCS Intake Cam Gear - 06-14 WRX / 04-21 STI

Subaru OEM Driver Side AVCS Intake Cam Gear - 06-14 WRX / 04-21 STI $204.02

Subaru OEM Passenger Side AVCS Intake Cam Gear - 06-14 WRX / 04-21 STI

Subaru OEM Passenger Side AVCS Intake Cam Gear - 06-14 WRX / 04-21 STI $204.02

IAG 900 Long Block Engine w/ Stage 4 Heads - 06-14 WRX / 04-21 STI

IAG 900 Long Block Engine w/ Stage 4 Heads - 06-14 WRX / 04-21 STI $12,749.99

GSC Single Spring Set w/ Titanium Retainers - 04+ STI / 02-14 WRX

GSC Single Spring Set w/ Titanium Retainers - 04+ STI / 02-14 WRX $266.48 $313.50

IAG Fire-Lock Head Gaskets EJ25 / EJ257, 100mm, 0.051" for 14mm Head Studs

IAG Fire-Lock Head Gaskets EJ25 / EJ257, 100mm, 0.051" for 14mm Head Studs $299.99

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