Best Sti Upgrades in 2023 (Top 10 Picks)

Sometimes it might be quite difficult to find the best sti upgrades. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this sti upgrades buying guide.

Our Favorite Picks:

#	Preview	Product
1		PERRIN Motor/Engine Mount Upgrade Kit Compatible with Subaru WRX, STI, Forester, Impreza, Legacy and...	Check Price
2		maXpeedingrods Upgrade TD05 Turbo Charger Billet Compressor Wheel for Subaru Impreza WRX STI EJ20...	Check Price
3		Subaru Upgrade Speaker Kit by Kicker Subaru WRX STi Crosstrek Impreza H631SFJ001	Check Price
4		maXpeedingrods Upgrade Turbocharger TD05-20G Turbo Charger for Subaru Impreza WRX STI EJ20 EJ25 2002...	Check Price
5		NEW 2015-2017 Subaru Rear Sway Bar And Bushing Upgrade WRX STi OEM 20451VA000	Check Price
6		Genuine OEM Subaru Rear Oil Separator Upgrade Kit with bolts Sti WRX Legacy Impreza Forester Outback	Check Price
7		New Generation Led Fog Light assembly Retrofit Upgraded For Subaru Nissan Xterra Frontier Pathfinder...	Check Price
8		Rev9 OCK-1092 19 Row Core Oil Cooler Kit; Bolt On Upgrade; compatible with Subaru Impreza WRX EJ20 /...	Check Price
9		Morimoto 3" STi-R Clear Glass Projector Lens Upgrades to Improve Performance of OEM Japanese Koito...	Check Price
10		AJP Distributors Upgrade Dual Core 2-Row Cooling Aluminum Radiator Manual Transmission M/T...	Check Price

The 10 Best Sti Upgrades Reviews:

SaleBestseller No. 1

PERRIN Motor/Engine Mount Upgrade Kit Compatible with Subaru WRX, STI, Forester, Impreza, Legacy and BRZ, Toyota GT 86, 86 and Scion FR-S

• Replace your worn or broken motor mounts, or simply improve the mounting of your engine to improve performance!
• PERRIN Engine Mounts reduce motor movements, efficiently transmit motor power and giving drivers a connected feel with their car. A large improvement over OEM, PERRIN Engine Mounts are perfect for replacing broken or worn factory mounts.
• Installation instructions included! Constructed from 6061 Aluminum and 75T durometer bushings.
• 5-year warranty (See details within product packaging)
• Compatible with: Subaru WRX 2002-2020, STI 2004-2020, Impreza 1993-2011, Forester 2004 - 2015, BRZ 2013 - 2020, Legacy 2005 - 2009, Scion 2013 - 2016 and Toyota GT86 / 86 2017-2020

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Bestseller No. 2

maXpeedingrods Upgrade TD05 Turbo Charger Billet Compressor Wheel for Subaru Impreza WRX STI EJ20 EJ25 2002-2006 with Wastegate

• 【Application】: Fit for Subaru IMPREZA WRX/STI EJ20 EJ25 engine, 2002-2006
• 【Upgrade Turbo 】: TD05-20G Turbo boost horsepower up to 420BHP. It replaces the TD04 for a TD05H turbine wheel, enlarges the turbine housing area to 7 square cm to improve the exhaust efficiency, thus gains more power than the stock turbo
• 【Specificatons】: Oil Feed：M10*1.5 ; Oil Drain：M16.8 ; Oil Drain Screw：2*M6*1.0 ; water inlet/outlet：M14*1.5
• 【Features】: 1. balancing Test by TURBOTECHNICS VSR3. 2. Turbine housing ：Silicon-Molybdenum - temperature resistant up to 850℃. 3. Steel Turbine Wheel：K419 alloy - high oxidation stability and resistance up to 1000℃. 4. Billet compressor wheel：forged full-machined billet aluminum compressor wheels with a larger horsepower range and better boost response
• 【Notice】: All for WRX Wagon engines and automatic sedan engines came with a TD04,all manual WRX sedans including STI versions had a TD05 model. If your original turbo is TD04 model, some modification(connections, bolts, fixed screws etc.) is required

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SaleBestseller No. 3

Subaru Upgrade Speaker Kit by Kicker Subaru WRX STi Crosstrek Impreza H631SFJ001

• Genuine Subaru Speaker Kit
• H631SFJ001
• pecial speakers enhance high-frequency audio response as well as improve stero imaging beyond the stock speaker.
• 2012-2014 Impreza (non wrx non sti)
• 2015-2016 Impreza

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Bestseller No. 4

maXpeedingrods Upgrade Turbocharger TD05-20G Turbo Charger for Subaru Impreza WRX STI EJ20 EJ25 2002 2003 2004 2005 2006 420 HP Boost Water + Oil Cooled with Wastegate

• 【Fitment 】: Compatible for Subaru IMPREZA WRX / STI EJ20 EJ25 engine 2002 - 2006.
• 【Cooling Type】: Water and Oil cooling
• 【TD05-20G Turbo】: TD05-20G Turbo boost horsepower up to 420BHP. It replaces the TD04 for a TD05H turbine wheel, enlarges the turbine housing area to 7 square cm to improve the exhaust efficiency, thus gains more power than the stock turbo
• 【Specificatons】: Oil Feed：M10*1.5 ; Oil Drain：M16.8 ; Oil Drain Screw：2*M6*1.0 ; water inlet/outlet：M14*1.5
• 【NOTICE】: All for WRX Wagon engines and automatic sedan engines came with a TD04,all manual WRX sedans including STI versions had a TD05 model. If your original turbo is TD04 model, some modification(connections, bolts, fixed screws etc.) is required.

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Bestseller No. 5

NEW 2015-2017 Subaru Rear Sway Bar And Bushing Upgrade WRX STi OEM 20451VA000

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Bestseller No. 6

Genuine OEM Subaru Rear Oil Separator Upgrade Kit with bolts Sti WRX Legacy Impreza Forester Outback

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Bestseller No. 7

New Generation Led Fog Light assembly Retrofit Upgraded For Subaru Nissan Xterra Frontier Pathfinder Leaf Titan Subaru XV Crosstrek Forester Outback WRX STI BRZ Legacy 2005-2020

• Using most leading edge LED lens-point focus lens. Different from the traditional glass , the point focus lens uses a plastic injection molding process, so that the complex curved surface calculated by the computer can be formed. The point focus lens uses a hyperboloid design, which has higher optical efficiency and a wider light type, so that this type of lens can realize the fog lamp function and the auxiliary lighting function of the curve at the same time.
• This fog lamp is consistent for Nissan cars Subaru cars fog lamp mounting holes and bulb interface (H11 H9 H8) on the market, and it has strong versatility and is very convenient for upgrades and modifications.
• Siemid Autolights-Focus on the research and development and manufacturing of automotive lamps. The essence of the industry, leading the trend of the industry! We are committed to producing products that are assured and satisfactory for consumers. Welcome to choose.
• High quality, 1 year warranty. Packing: two packs
• In order to avoid mistake, please check its size and shape,the size is 90mm diameter (round shape).

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Bestseller No. 8

Rev9 OCK-1092 19 Row Core Oil Cooler Kit; Bolt On Upgrade; compatible with Subaru Impreza WRX EJ20 / WRX STI EJ25 (2006-07 WRX/STI)

• Product Details Subaru WRX STI 06-07 EJ20 EJ25 19 row bolt on oil cooler kit
• application: - 2006 2007 subaru wrx or sti
• Oil cooler dimension : 11.5" x 5.5" x 2 " Oil cooler line length : 39" , 33"
• comes with adaptor, fittings and mounting bracket.
• "-high quality 19 row oil cooler -comes with adaptor & fitting for direct bolt on -perfect for autocross /track use -high pressure, high temp hydraulic hose with fittings -mounting bracket for direct fit ( wrx / sti 06-07 )

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Bestseller No. 9

Morimoto 3" STi-R Clear Glass Projector Lens Upgrades to Improve Performance of OEM Japanese Koito Projectors

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Bestseller No. 10

AJP Distributors Upgrade Dual Core 2-Row Cooling Aluminum Radiator Manual Transmission M/T Compatible/Replacement For Impreza WRX STI 2002 2003 2004 2005 2006 2007 02 03 04 05 06 07

• Type: Radiator
• Material: Aluminum
• Fitment Type: Direct Replacement
• Row Count: 2 Rows
• Brand Type: Aftermarket Branded

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Last update on 2023-06-07 / Affiliate links / Images from Amazon Product Advertising API

How to find the best sti upgrades?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best sti upgrades for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good sti upgrades recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

• What features does the sti upgrades need to have to be perfect for my needs?
• What is my budget?
• Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for sti upgrades to find what you’re looking for:

Brand

In some cases, the brand of sti upgrades is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given sti upgrades are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about sti upgrades are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare sti upgrades quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best sti upgrades can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.