ACT SB11HDSS Clutch for the 06-11 Subaru WRX

The WRX is one of the most popular tuner cars in the industry, and for very good reason: you get all-wheel drive performance and a boxer engine that loves to be tuned and can support over 600 horsepower if you got all the right goodies. None of that power is any good if you can’t put it through the drivetrain and onto the ground. In this article, we talk about the act clutch and why it’s just the ticket for any high horsepower WRX build. Now, of course, you can buy this clutch at Motoroso.com. Let’s get started.

Our friend Zach has a 2011 WRX with the EJ255 motor and a couple of basic mods, like an intake and exhaust and an off-the-shelf COBB tune. He has aspirations of making over 400 wheel horsepower, which is going to get through an upgraded intercooler, turbo, a fueling system, and of course, a custom tune. With those kinds of horsepower levels, his stock clutch is going to fold like an elephant riding a horse. This Heavy Duty Clutch from ACT is going to be just the ticket to handle all those extra ponies and get them to the ground, and you can purchase this for under $1,000 on Motoroso.com. Let’s talk about the features that make this clutch a great value.

The first thing to know about this kit is that it is a clutch and flywheel combination. It includes the pressure plate, clutch disc, throwout bearing, alignment tool, and the flywheel itself. This combination can handle up to 449 ft/lbs. of torque, which is a 40% gain over OE—probably enough to support most builds upwards of 500 horsepower. 

THE CLUTCH

The clutch disc itself is organic and has a high copper content, which is really important for diffusing the heat that builds up in a clutch, making sure your clutch is working properly and can handle all the power that’s going through it. It’s also a sprung clutch, which helps reduce the noise, vibration, and harshness because we know most of you are probably still street driving this car. 

THE FLYWHEEL

One of the most important things to know here is that the flywheel in your OEM clutch weighs about 27 pounds. The flywheel from ACT that comes in the kit weighs only 15 pounds, which is nearly a 50% reduction. That means your downshifts are going to be smoother, and the whole engine is going to rev noticeably faster. The flywheel is CNC machined Chromoly steel, and the ring gears are heat-treated and hardened to ensure maximum durability. Then the whole thing is computer balanced and mated to the rest of the clutch to make sure they all work perfectly together and operate smoothly. 

Lastly, the pressure plate is going to offer a 40% increase in clamping force due mostly to the spring plate, going through a four-stage heat-treating process. This increases the clamping force, but it also makes sure that those springs are much less likely to break and cause damage to the rest of the clutch. Of course, the pressure plate is also mated to the flywheel and the disc so everything’s balanced perfectly that once you install it, it’s going to operate smoothly, and the whole clutch comes with a 12-month warranty. 

That wraps up our closeup, look at the ACT SB-11 HDSS Clutch, which is exactly the ticket that you need if you’re going to be putting down some serious ponies in your WRX. Again, you can purchase this product for under $1,000 at Motoroso.com where you can also shop for over a million other top name-brand products sold by trusted vendors at great prices, and the shipping is always free with no minimum. 

If you’d like to learn how to install the ACT clutch on the Subaru WRX, check out this blog post!

Subaru WRX ACT Clutch Install Video: