THE WRX FOUNDATION
The base platform that gave the world the WRX and STI — and a strong tuner scene of its own.
Subaru Impreza HERITAGE
THE BOXER-AWD COMPACT
MOTORMIA Impreza builds include rally-spec dirt cars, autocross weekend cars, daily-driver Outback Sport conversions, and budget tuner builds. Many WRX bolt-on parts (intakes, exhausts, suspension) cross-fit the Impreza chassis with minor adapters.
Subaru Impreza ON MOTORMIA
THE NUMBERS
CATEGORIES
Top product categories for the Subaru Impreza
BRANDS
Top brands for Subaru Impreza builds
READY TO BUILD YOUR SUBARU IMPREZA?
Pick your year and trim to shop verified-fit Subaru Impreza parts.
Shop all Subaru Impreza parts →Verified Fitment
Subaru Impreza Category:engines and components Parts
789 parts available
Shop aftermarket parts for the Subaru Impreza. Verified fitment, free shipping, 30-day returns.
Manley Performance
Manley Subaru WRX/STi Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)
CP Pistons
CP Piston & Ring Set for Subaru EJ25 WRX STi - Bore (100.0mm) - Size (+0.5mm) - CR (10) - Set of 4
JE Pistons
JE Pistons SUB EJ25 DOHC 8.5:1 KIT Set of 4 Pistons
JE Pistons
JE Pistons SUB EJ25 SOHC 11.5:1 KIT Set of 4 Pistons
Manley Performance
Manley 04+ Subaru WRX/STi (EJ257) 79mm Stroke 99.55mm Bore 8.5:1 -17cc Dish ED Piston Set
Wiseco
Wiseco Subaru EJ25 SOHC 4v Dish -18cc 99.75 Piston Shelf Stock Kit
Wiseco
Wiseco Subaru EJ20 R/DOME 6576M93 Piston Shelf Stock Kit
Mahle
Mahle MS Piston Set Subaru 2.5L 99.75mm Bore 79mm Stroke 130.4mm Rod 23mm Pin -22cc 8.5 CR Set of 4
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STI- Bore (100.0mm)-Size (+0.5mm)- CR (9.0) - Set of 4
Cometic Gasket
Cometic WRX EJ207 2.0L 93mm bore .140 inch MLS-5 Head Gasket
King Engine Bearings
King Engine Bearings Subaru EJ20/EJ22/EJ25 (Including Turbo) Performance Rod Bearing (Set of 4)
Manley Performance
Manley 04+ Subaru WRX STi (EJ257) 75mm DE-STROKED 99.5mm STD Bore 9.8:1 Dish Piston Set with Rings
JE Pistons
JE Pistons SUB STI EJ257 100mm Bore CR 9.5 KIT Set of 4 Pistons
Manley Performance
Manley 04+ Subaru WRX/STi EH257 99.50mm STD Bore 9.8:1 Dish Extreme Duty Piston Set of 4
Manley Performance
Manley 04+ Subaru WRX/STi (EJ257) 99.75mm Bore 1.2mm x 1.2mm x 2.0mm +.25mm Oversized Ring Set
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX/STI (Stroker)-Bore (100.5mm)-Size (+1.0mm)-CR (9.0)
Manley Performance
Manley Subaru WRX/STi (1.050/.755) 16pc Titanium Retainers (for use with 22180-16 Springs)
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100.5mm) - Size (+1.0mm) - CR (8.2) Set of 4
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100mm) - Size (0.5mm) - CR (8.2)
ARP
ARP 99+ Subaru EJ Series Phase 2 SOHC Head Stud Kit
JE Pistons
JE Pistons Subaru EJ20 Head/EJ25 Block Ultra Series 3.927 in. Bore Kit Set of 4 Pistons
Wiseco
Wiseco 92.0mm Ring Set w/ tabbed oil set Ring Shelf Stock
King Engine Bearings
King Engine Bearings Subaru FA20/Toyota 4U-GSE (Size .026) pMaxKote Performance Main Bearing Set
ARP
ARP Subaru EJ Series Press Fit Rod Bolt Kit
Manley Performance
Manley 04+ Subaru WRX/STi (EJ257) 83mm Stroker 100.0mm +0.5mm Size 8.5tDish Extreme Duty Piston Se
Cometic Gasket
Cometic 02-05 Subaru EJ20 DOHC 93.5mm Bore .048in thick MLX Head Gasket
JE Pistons
JE Pistons Subaru EJ20 Stroker Ultra Series 8.5:1 (Set of 4 Pistons)
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (99.75mm) - Size (0.25mm) - CR (8.2)
King Engine Bearings
King Subaru EJ20/EJ22/EJ25 Including Turbo pMaxKote Performance Main Bearing Set - Size +.026mm
JE Pistons
JE Pistons SUB EJ257 83mm STR 99.5mm Bore CR 8.5 KIT Set of 4 Pistons
King Engine Bearings
King Engine Bearings Subaru EJ20/EJ22/EJ25 Housing Bore + .002mm Main Bearing Set - Size STDX
JE Pistons
JE Pistons Ultra Series Subaru EJ205 92mm Bore 8.5:1 CR Set of 4 Pistons
JE Pistons
JE Pistons Ultra Series Subaru EJ257 100mm Bore 9.5:1 CR Set of 4 Pistons
Manley Performance
Manley Subaru EJ20/EJ25 4340 Billet 83mm Stroke Turbo Tuff Series Crankshaft
JE Pistons
JE Pistons Subaru EJ25 Ultra Series 99.50mm Bore Dia -16.5cc 8.5:1 - Piston Set
Mahle
Mahle MS Piston Set EJ25 99.75mm Bore 79.0mm Stroke Stock Rod 23mm Pin -22cc 8.5 CR Set of 4
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STI- Bore (99.75mm)-Size (+0.25mm)- CR (9.0) - Set of 4
JE Pistons
JE Pistons SUB EJ25 SOHC 11.5:1 KIT Set of 4 Pistons
King Engine Bearings
King Engine Bearings Subaru EJ20/EJ22/EJ25 Tri-Metal Perf Main Bearing Set - Size +.005mm
Manley Performance
Manley Subaru EJ20/EJ25 4340 Billet 79mm Stroke Turbo Tuff Series Crankshaft
JE Pistons
JE Pistons SUB STI EJ257 99.75mm Bore CR 9.5 KIT Set of 4 Pistons
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STI - Bore (99.5mm) - Size (STD) - CR (9.0) - Set of 4
Manley Performance
Manley Subaru WRX/STi (1.80/.870) 16pc Titanium Retainers (for use with 22185-16 Springs which ar
Mishimoto
Mishimoto 2011+ Subaru WRX / STI Ignition Coil Set of 4
Go Fast Bits
GFB Replacement Part for Subaru Pulley Kits - Belt kit to suit pulley kits 2002 2003 & 2010 (2 belt
Manley Performance
Manley 04+ Subaru WRX STi (EJ257) 75mm DE-STROKED 100mm +.5mm Bore 8.5:1 Dish Piston Set w/ Rings
JE Pistons
JE Pistons SUB EJ257 83mm STR 100mm Bore CR 8.5 KIT Set of 4 Pistons
Clevite
Clevite Nissan 2.5L QR25DE 2002-06 Main Bearing Set
Wiseco
Wiseco Subaru WRX EJ20 STROKER 1.181CH Piston Shelf Stock Kit
King Engine Bearings
King Subaru EJ15/EJ16/EJ18/EJ20/EJ22/EJ25 (Size 0.25mm) Silicone Bi-Metal Alum Rod Bearing Set
Wiseco
Wiseco 100.0mm Ring Set 1.2 x 1.5 x 2.0mm Ring Shelf Stock
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (99.75mm) - Size (+0.25mm) - CR (9.0)
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (99.5mm) - Size (Standard) - CR (8.2)
King Engine Bearings
King Engine Bearings Subaru FA20/Toyota 4U-GSE pMaxKote Performance Main Bearing Set - Size STDX
CP Pistons
CP Piston & Ring Set for Subaru EJ257 WRX STI- Bore (99.75mm) - Size (+0.25) - CR (8.5) - Set of 4
Greddy
GReddy OX-04 Oil Filter M20xP1.5 / 68mm x 65mm height for Nissan VQ&SR / Mazda BP&13B / Honda ZC0B16
CP Pistons
CP Piston & Ring Set for Subaru EJ25 2.5RS - Bore (100mm) - Size (+0.5mm) - Compression Ratio (8.5)
CP Pistons
CP Piston & Ring Set for Subaru EJ20 WRX - Bore (92.5mm) - Size (+0.5mm) - Compression Ratio (8.5)
JE Pistons
JE Pistons SUB WRX EJ205 79mm STR 92.5mm Bore CR 9.5 KIT Set of 4 Pistons
Wiseco
Wiseco Subaru EJ22 Inv Dome -20cc 98mm Piston Shelf Stock Kit
FAQ
Frequently Asked Questions About the Subaru Impreza
What are the best aftermarket parts brands for the Subaru Impreza?
The top brands MOTORMIA owners trust for Subaru Impreza builds are PowerStop, EBC, Whiteline, Mishimoto, and Magnaflow. The catalog carries 5,779 parts that fit the Impreza. Use the fitment selector to filter to your specific year and trim, then browse by category or brand.
What's the best trim or sub-model of the Subaru Impreza to modify?
The most-modified Impreza trims are 2.5RS and Outback Sport. These trims typically came with performance-focused suspension, brakes, and engine options that give a higher starting point. That said, the Impreza's engine family (EJ25 (naturally aspirated), FB20, FB25) shares aftermarket across most trims, so base-trim builds with the right bolt-ons can match higher trims on power.
What's the typical mod path for a Subaru Impreza?
For most Subaru Impreza builds, the recommended modification order is: intake → exhaust → suspension → ECU tune → swap (if going turbo). This sequence stages upgrades so each mod supports the next — tuning unlocks gains from intake/exhaust, suspension keeps the added power planted. MOTORMIA member builds let you see exact part lists for Subaru Impreza builds at every power level.
How does the Subaru Impreza aftermarket compare to the Subaru WRX?
The Subaru Impreza is the base AWD-boxer platform that became the WRX, with strong N/A and budget tuning support. On MOTORMIA, 5,779 parts fit the Impreza across 4,000+ active member builds, with an average part MSRP of $623. The decision usually comes down to which platform you own — both have full bolt-on catalogs.
Will any Subaru Impreza part fit my year and trim?
Not always. The Subaru Impreza has had multiple generations and engine changes (e.g., EJ25 (naturally aspirated), FB20, FB25), and parts are generation- and trim-specific. MOTORMIA's catalog uses verified fitment data — every product page shows exactly which years and submodels of the Impreza a part fits. Use the fitment selector at the top of any page to pre-filter to your build.
Does MOTORMIA offer returns on Subaru Impreza parts?
Yes. Most Subaru Impreza parts on MOTORMIA are eligible for our 30-day return policy provided they're unused, uninstalled, and in original packaging. Special-order parts are flagged with a "Special Order" badge on the product page. Manufacturer warranties are processed through MOTORMIA on your behalf.
MOTORMIA APP
Build your Subaru Impreza with Mia
Personalized Subaru Impreza mod recommendations, verified fitment from real Impreza owners, and a garage that tracks every part on your build.
- Mod recommendations tuned to your Impreza year, trim, and submodel
- Verified fitment data from 4,000+ Subaru Impreza member builds
- Performance gain estimates based on real-world results
- Save your garage and track every part you've installed