Whiteline Roll-Center & Bump-Steer Kit WRX 02-21 / STI 04-21 / Legacy GT / Outback XT 05-09 | KCA313

Rated 5.0 out of 5
Based on 28 reviews
SKU: whlKCA313
Availability: 58 In Stock Learn more
Type: Suspension Ball Joints
Regular price
$186.89
Regular price
$292.88
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$186.89
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Part #: KCA313

Lowering the ride height of your Subaru WRX and STI can be a very effective modification, enhancing handling by creating a lower vehicle center of gravity and giving the car an aggressive look by minimizing wheel gap. Unfortunately, once the stock ride height has been altered, the front end roll-center is modified as well, which can actually make your car handle worse than stock when carving out those deep corners. The suspension gurus at Whiteline have developed the perfect cure to this ailment, the Whiteline roll-center kit. The Whiteline roll-center kit, also called the ROCK kit, realigns the suspension geometry of your lowered Subaru, raising the front roll-center and creating a substantial increase in front roll resistance and a significant reduction in suspension compression on the outside of the front wheels during cornering. The Whiteline ROCK kit will improve front end weight distribution, maintain a better camber angle and ultimately improve front end grip. You will also experience a reduction in understeer as well as improved steering feel, precision and overall vehicle stability.

Another negative side effect of lowering your car can be the induction of bump-steer. Bump-steer is the concept of bumps or imperfections in the road causing a car to steer off-track on its own, without any driver input. This is described by many Subaru drivers as needing constant direction correction when steering over a bump. This annoying and sometimes even dangerous effect is the result of poor suspension geometry when a vehicle is lowered below factory specs. The Whiteline bump-steer correction kit extends the factory front end tie-rods to keep the axles at nearly the same distance from the frame at the steering box, eliminating axle tilt and subsequently curing bump-steer. Whiteline includes their bump-steer kit in every Subaru roll-center kit for the perfect total suspension solution. Your Subaru never felt this good!

average rating 5.0 out of 5
Based on 28 reviews
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96% of reviewers would recommend this product to a friend
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Review posted
Reviewed by Randy P.
Verified Buyer
Rated 5 out of 5

Changing these can be fun!

The bump steer is definitely minimized, look cooler under the car vs stock tie rods and ball joints haha.

Changing these without the company 23 tool sucks though. Your old ones are most likely rusted in. I live in the desert and even mine were still stuck in there.

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Reviewed by Tommie Stackpole J.
Verified Buyer
Rated 5 out of 5

Awesome product

Anyone that lowers their car will need this and rear control arms to keep the alignment of the car correct. Definitely recommend Whiteline products for suspension parts.

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Reviewed by Adrian V.
Verified Buyer
Rated 5 out of 5

Neeeed

When lowering your car you’ll need this.

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Reviewed by Adam S.
Verified Buyer
Rated 5 out of 5

Roll-center and bump-steer kit

Installing these this weekend with a few other parts from Whiteline. Quality looks amazing!

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Reviewed by Steven
Rated 5 out of 5

5 Stars

Works fine just make sure you get adjustable sway bar links.

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Reviewed by Ricky o.
Verified Buyer
Rated 5 out of 5

Must-have for lowered cars

Fixed rubbing and helped level my car

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Reviewed by Christopher B.
Verified Buyer
Rated 5 out of 5

Sti

Love the grip in the corner a hell ifvlot better 325% better then stmtu

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Reviewed by Steven B.
Verified Buyer
Rated 5 out of 5

Works great

I’m happy with how they helped the car handle again When I put on coil overs

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Reviewed by Kyle P.
Verified Buyer
Rated 5 out of 5

Perfect solution

Super easy Intsall besides breaking the OEM ball joints free. Can definitely feel a difference after the alignment.

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Reviewed by Jeff R.
Verified Buyer
Rated 5 out of 5

Fit great

I havent driven with them yet but they look and went on great.

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