18+ STI Motor Builds
ARP Pro Series Head Stud Kit 11mm - 02-14 WRX / 04-19 STI
$203.68 $294.63
ARP Head Studs are a complete part of your engine rebuilding breakfast. These are the 11mm head studs, and these are a great idea if you are rebuilding your engine...
GSC Viton 6mm Valve Seal Set - EJ205 / EJ207 / EJ257
$12.94
GSC Power-Division Viton Valve Stem Seals for the Subaru Turbo EJ Motors 6mm seal set (includes 8 intake and 8 Exhaust). These are an upgrade from the standard OEM material...
Gates Timing Belt Kit w/ Water Pump - 04+ STI / 05-07 WRX
$233.42 $331.51
For those of you bold folks looking to perform the timing belt kit, Gates has a complete kit ready for you to rock and roll and to enjoy extra worry...
Subaru OEM Water Pump and Gasket - 02-07 WRX / 04-18 STI
$145.95 $150.53
OEM Subaru water pump and gasket. When doing a timing belt job or rebuilding your motor, make sure you get OEM parts to ensure longevity and reliability.
Subaru OEM Valve Cover Gasket - 04+ STI / 06-14 WRX
$12.95
These are Subaru OEM Valve Cover Gaskets
IAG Wrist Pin / Cover Seal Kit - Subaru EJ25 Short Blocks
$105.99
Not planning on reusing your original short block service plugs and covers? Here is a simple comprehensive cover and seal kit that includes: Rear Mail Seal 3 OEM Wrist Pin...
Gates Timing Belt Kit - 04+ STI / 04-14 WRX
$168.32 $249.76
If you’re wanting a timing belt that carries the same high standards as the OE example, Gates is the brand to choose. This particular kit with come with everything you...
Subaru OEM Engine Gasket Kit - 08+ STI
$348.47
This is a complete set of gaskets available for those of you looking to perform a rebuild of your engine, and need the same quality gaskets used and trusted by...
King Engine Bearings Standard Connecting Rod Bearing Set - 02-14 WRX / 04-19 STI
$58.00
King Engine Bearing Specialists is a company that emphasizes all of their focus on designing and manufacturing the best quality engine connecting rod bearings, as well as engine main bearings,...
GSC Stopper Style Intake Valve Guide - Subaru EJ20 / EJ25
$41.45
What they have done is actually quite simple, they made valve guides that fit properly, are easier to install, and shaped to help air flow instead of just copying the...
GSC Stopper Style Exhaust Valve Guide - Subaru EJ20 / EJ25
$41.45
What they have done is actually quite simple, they made valve guides that fit properly, are easier to install, and shaped to help air flow instead of just copying the...
GSC Stainless Steel Intake Valves STD Size - 04+ STI / 02-14 WRX
$121.38
When creating their new valve line they set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs they have...
GSC Beehive Spring Set w/ Titanium Retainers - 04+ STI / 02-14 WRX
$386.39
GSC Power-Division Beehive Springs are the result of some of the most advanced manufacturing techniques in the industry. GSC uses an ovate wire which utilizes advanced material heat treatment methods...
IAG Stage 2 2.5L Subaru Short Block - EJ WRX/STI/LGT/FXT
$3,199.99
The IAG Stage 2 Short Block is designed for modified EJ25 Subaru's that need a beefed-up performance short block. The IAG Stage 2 short block builds off the Stage 1's...
ARP Custom Age 625+ Head Stud Kit 11mm - 02-18 WRX / 04-18 STI
$489.99 $721.47
This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and...
Subaru OEM Spark Plug Well Gaskets - 04+ STI / 02-14 WRX
$9.95
Any time you pull your valve covers off it is always a good idea to replace all the gaskets. This gasket is for the hole around the spark plug well....
Manley Forged Steel H-Tuff Beam Connecting Rods Set - 02-14 WRX / 04+ STI
$424.51 $482.40
Remember that one time when you got your first turbocharged car? Turn the boost up they said, get a bigger turbo they said, it’s okay to run on pump gas...
King Engine Bearings Standard Size Main Bearing Thrust Bearing #5 - 02-14 WRX / 04-19 STI
$98.00
King Engine Bearing Specialists is a company that emphasizes all of their focus on designing and manufacturing the best quality engine connecting rod bearings, as well as engine main bearings,...
GSC Power-Division Camshafts S2 Camshafts - 08-18 STI
$998.75
These are the GSC billet core camshafts built to suit the high horsepower Subaru WRX/STI’s from 2008 and on. If you have a highly built motor that consists of a...
Subaru OEM Air Conditioning Belt Set - 08-18 WRX/STI
$82.95
This is a genuine Subaru OEM air conditioning belt kit.
GSC Stainless Steel Exhast Valves STD Size - 04+ STI / 02-14 WRX
$114.58 $134.80
When creating their new valve line they set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs they have...
Subaru OEM Timing Belt Kit - 04+ STI / 04-14 WRX
$503.69 $621.70
When you're tackling such an important job you want to make sure the parts you use will last as long as possible. With this Subaru OEM Timing Belt Kit you...
IAG Stage 2 Tuff 2.5L Subaru Short Block - EJ WRX/STI/LGT/FXT
$3,499.99
The IAG Stage 2 Tuff short block starts with new Subaru 2.5L EJ25 engine case halves that are bored and honed to 99.75 on our in-house Sunnen SV-30 the most...
GSC Super Alloy Exhaust Valves STD Size - 04+ STI / 02-14 WRX
$199.92
GSC Power-Division Super Alloy Exhaust Valves for EJ20/25 Turbo For those running high horsepower, high EGT set ups that need a valve that will last in 2000F conditions. The Super...
Gates Racing Timing Belt Kit - 04+ STI / 04-14 WRX
$307.85 $671.54
Going with a Gates Timing Belt Kit is the easiest way to make sure you have everything you need to do the job correctly. These kits come with all Gates...
Manley Performance Platinum Series Piston STD Bore "Drop-Ins" - 04-19 STI
$142.29 $161.70
Made one too many passes at the drag strip? Or is your engine starting to get a little tired? Not a problem. Manley has provided the gear heads with their Platinum...
IAG Fire-Lock Head Gaskets EJ25 / EJ257, 100mm, 0.051" for 14mm Head Studs
$249.99
After years of research and development testing, the IAG Performance Fire-Lock head gasket is the newest solution to preventing head gasket failure on high horsepower and high boost Subaru EJ25...
IAG Performance ARP 1/2" Head Stud Set - 02-19 WRX/STI
$499.99
The IAG Performance 1/2 Inch Head Stud Set is manufactured by ARP and is designed for use on high horsepower Subaru EJ25 and FA20 DIT engines. Due to the larger...
Subaru OEM Forged Salt Bath Nitrated Crankshaft - 06-14 WRX / 04+ STI
$362.48 $381.56
This crankshaft from Subaru is their latest and greatest factory EJ crankshaft. The crank is salt-bath nitrated to be extremely hard and reduce the chances of wear and damage from foreign...
Orbit High Pressure Oil Pump - EJ20/22/25
$209.30 $275.52
Orbit performance oil pumps are designed with high output and volume capabilities required for high RPM performance engines (see flow data chart). The gerotors are precision machined from steel-copper alloy...
Manley Valve Spring & Titanium Retainer Set - 04+ STI / 02-14 WRX
$213.22 $299.37
The Manley Performance Valve Spring and Retainer Kit has been designed to accommodate high-lift cams, and to allow users to surpass OEM rev limitations when power levels have been increased...
Manley Platinum Series Piston Set 99.5mm 8.5:1 - 06-14 WRX / 04-18 STI
$511.25 $583.00
Made one too many passes at the drag strip? Or is your engine starting to get a little tired? Not a problem. Manley has provided the gear heads with their Platinum...
IAG Stage 2.5 EJ25 Subaru Closed Deck Short Block - WRX/STI/LGT/FXT
$3,999.99
The IAG Stage 2.5 Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to accept...
IAG Stage 1 2.5L Subaru Short Block
$2,999.99
The IAG Stage 1 Short Block is perfect for lightly modified EJ25 Subaru's that need a basic and reliable performance short block. Subaru turbo engines are commonly known for piston...
GSC EJ Valve Spring Seats OEM Style Replacements - EJ205 / EJ207 / EJ257
$20.40 $24.00
GSC Power-Division Spring Seats are now available for the Subaru Turbo EJ series. The GSC1005 is an OEM replacement stamped spring seat, usable with GSC Power-Division 5043 or 5743 upgraded...
GSC Power-Division Stainless Steel Intake Valves +1mm Oversize - 04+ STI / 02-14 WRX
$115.60
When creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have...
IAG Timing Belt Guide Black Finish - 02-14 WRX / 04+ STI
$44.99
The IAG Performance billet timing belt guide is the best method to prevent you EJ motor from skipping a beat. Engineered and manufactured in our facility in Westminster, MD, each...
IAG Performance / ARP 14mm Head Stud Set - 02-19 WRX/STI
$550.00
IAG's / ARP 14mm Head Stud Set is designed for use on high horsepower Subaru engines. The larger size of the stud increases its load capacity which in turn helps...
IAG Stage Magnum EJ25 Subaru Closed Deck Short Block - WRX/STI/FXT/LGT
$4,999.99
The IAG Stage 2.7 Magnum Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to...
IAG Stage Trojan EJ25 Subaru Closed Deck Short Block - WRX/STI/LGT/FXT
$4,599.99
IAG Trojan Subaru EJ25 Closed Deck Short Block The IAG Stage 2.6 Trojan Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together...
Brian Crower Steel Spring and Retainer Kit - Subaru Models (inc. 02-14 WRX / 04+ STI)
$165.95
The Brian Crower Single Spring/Steel Retainer Kit is a great addition for those of you planning buiding your head, or adding a set of aggressive cams. These are designed for...
Tomei Timing Belt Guide - 02-14 WRX/STI
$45.00 $50.00
In some rare instances, the boxer engines have had issues where the actual pulley can slip off due to inherent vibration caused from the horizontal design. With that said, if...
Subaru OEM Timing Belt - 02-04 WRX / 04-18 STI
$149.95
When it's time to do the timing belt on your Subaru you might as well reach for the part that has worked so well for your motor up until the...
Manley Platinum Series Piston Set 99.75mm 9.8:1 - 06-14 WRX / 04-18 STI
$511.25 $583.00
Made one too many passes at the drag strip? Or is your engine starting to get a little tired? Not a problem.Manley has provided the gear heads with their Platinum...
Manley Platinum Series Piston Set 99.5mm 9.8:1 - 06-14 WRX / 04-18 STI
$511.25 $583.00
Made one too many passes at the drag strip? Or is your engine starting to get a little tired? Not a problem. Manley has provided the gear heads with their Platinum...
Manley Performance Race Flo Stainless Steel Intake Valves +1mm Oversized - 02-14 WRX / 04-18 STI
$151.39
Manley Race Flo 37mm Intake Valve Set For Subaru WRX / STI (8). Manley Intake valves are made from NK-842 Stainless, are Swirl Polished, Fully Machined, feature Chrome Stems and...
Manley H Beam Steel Connecting Rods - 02-14 WRX / 04-18 STI
$366.35 $431.00
Remember that one time when you got your first turbocharged car? Turn the boost up they said, get a bigger turbo they said, it’s okay to run on pump gas...
LIC Motorsports Adjustable Timing Belt Idler Bearings - 02-14 WRX / 04+ STI
$174.95
These parts are designed for long blocks that have been narrowed down from resurfacing the heads during a rebuild or decking the block and/or both. When that process is done...
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