Mooresport Performance Parts

The best Mooresport parts for a Subaru WRX or WRX STI are the ones that tighten up how the chassis and steering respond: adjustable front and rear upper mounts for alignment control, solid engine mounts, and a solid steering rack bushing kit. This collection covers WRX and WRX STI models from the early 2000s through the 2015-2020 cars, plus BRZ and FR-S rear mounts, so check your year and model before ordering.

Upper mounts, also called top hats, sit at the top of the struts and are where alignment angles are held. Adjustable versions let an alignment shop dial in more negative camber for front grip in corners, while solid mounts reduce the flex a soft factory rubber mount allows. The trade-off is more noise and vibration, so street and motorsport versions exist for different priorities.

Brands in This Collection

Mooresport is the only brand here, and the range shows a focused motorsport approach to Subaru chassis hardware. The DMS Motorsport adjustable rear upper mounts cover 02-07 WRX and WRX STI and 93-01 Impreza applications, while the Street adjustable front upper mounts cover the same early cars in a version named for road use. That street-versus-motorsport split is the useful story in this catalog: the same job, tuned for how hard the car will be driven.

Beyond mounts, Mooresport covers a solid steering rack bushing kit for 2015-2020 WRX, solid engine mounts for 02-05 WRX and 04-05 WRX STI, and a power steering pump adapter kit for 04-14 WRX and WRX STI. Rear mounts also extend to 08-14 WRX and WRX STI and to 13-16 FR-S and 13-19 BRZ. Compare the DMS Motorsport adjustable rear upper mounts with the Street adjustable front upper mounts to see the two approaches side by side.

For the rest of the chassis, Whiteline is the broad-coverage alternative, known here for bushings, sway bars, and alignment products across many Subaru generations. Superpro is the other name owners compare, best known here for polyurethane bushings that replace soft factory rubber. Start from the wider suspension range, then narrow to suspension bushings and engine mounts, and read our guide to suspension upgrades for grip and control before choosing.

Frequently Asked Questions

Do I need an alignment after fitting adjustable upper mounts?

Yes. Upper mounts allow changes to camber and other alignment angles, so a professional alignment is part of the job. Skipping it can leave tire wear and handling worse than stock.

What is the difference between the Street and DMS Motorsport mounts?

The names reflect intended use: Street versions are aimed at road-driven cars, while DMS Motorsport versions are aimed at competition-style use. Expect the motorsport direction to prioritize precision over comfort, so match the version to how the car is actually driven.

Will solid engine and steering rack mounts increase vibration?

Generally, yes. Solid mounts transmit more engine and road feedback into the cabin than soft factory rubber, in exchange for less movement under load. Many owners accept that trade on a focused build and avoid it on a quiet daily driver.

How difficult is installation?

Upper mounts require disassembling the strut assembly with spring compressors, so leave that to a shop if you are not equipped for it. Rack bushings and engine mounts are simpler but still require lifting the car safely.