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MartiniWorks
MartiniWorks

K-Tuned K2 Pro-Circuit 2-Way Coilovers 06-11 Honda Civic Si (8th Gen) / 06-11 Acura CSX - 14K front and 12K rear springs

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K-Tuned K2 Pro-Circuit 2-Way coilovers for the 2006-2011 Honda Civic Si, 8th Gen, and 2006-2011 Acura CSX. Includes 14K, 785 lb/in, front springs, 12K, 672 lb/in, rear springs, standard race valving, remote reservoirs, adjustable ride height, and rebound adjustment.
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K-Tuned K2 Pro-Circuit 2-Way Coilovers 06-11 Honda Civic Si (8th Gen) / 06-11 Acura CSX - 14K front and 12K rear springs
1 x $2699.99
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What cars does this fit?

All Compatible Vehicles (7 total)

Compatible Vehicles
2011 Honda Civic Si
2010 Honda Civic Si
2009 Honda Civic Si
2008 Honda Civic MUGEN Si
2008 Honda Civic Si
2007 Honda Civic Si
2006 Honda Civic Si

Product Description

K-Tuned K2 Pro-Circuit 2-Way coilovers for the 2006-2011 Honda Civic Si, 8th Gen, and 2006-2011 Acura CSX. This Pro-Circuit setup comes with 14K front springs, rated at 785 lb/in, and 12K rear springs, rated at 672 lb/in, along with K-Tuned's standard race valve.

  • Spring rates: 14K front and 12K rear. This is the recommended spring combination listed for this kit, aimed at cars spending serious time in track conditions.
  • Damper setup: Remote reservoirs and separate rebound adjustment give you room to work with the suspension setup when changing tires, alignment, track surface, or driving style.
  • Ride height and preload: Adjustable aluminum spring perches let you set ride height while managing spring preload and available suspension travel. No more treating ride height as the only adjustment.
  • Mounts: Pillow-ball upper mounts are part of the Pro-Circuit family. On this McPherson-strut application, adjustable upper camber plates provide camber adjustment at the top mount.
  • Damper construction: K-Tuned uses a heat-treated steel piston and needle valve, proprietary damper oil, and high-temperature double seals. The exterior uses powder coating, electroplating, and anodizing for corrosion protection across the assembly.

This stuff is set up around circuit use, not a soft street-oriented coilover package. The remote-reservoir design and separate rebound adjustment are useful when you're actually making changes between sessions and want to keep track of what the car responds to.

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About MartiniWorks

We're passionate, real car enthusiasts located in Appleton, Wisconsin who care about you modifying your car the right way; with the right aftermarket car parts. With a combined 75 years of aftermarket car building experience, we make sure you're always buying the right part for your car.
Every part available is the lowest price on the internet, ensuring you're getting the best deal to modify your car. With the largest catalog of aftermarket wheel brands, performance brands, and suspension brands, MartiniWorks supports your build through real product reviews, real experiences, and a real customer experience team that loves helping you mod your car.
MartiniWorks specializes in wheels, tires, suspension and performance brands like Enkei Wheels, Continental Tires, Work Wheels, Injen Intakes, K&N Performance, Greddy, Stage Wheels, Advan Wheels, General Tires, BC Racing Coilovers, Fifteen52 Wheels, Fortune Auto Coilovers, and many more. Check out our entire store here!

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We know how aftermarket car parts work, and we post everyday on parts, car builds, and automotive news to keep you in the know on the up and coming things for your car. Take a look at our channels and if you'd like to see us do a video on a product, let us know in the comments!
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Shipping & Delivery

How Shipping Car Parts Works

Shipping times vary depending on item availability. While we work closely with our vendors and manufacturers, inventory accuracy may sometimes cause potential delays.

Unless a specific lead time is listed on this product page, expect to receive an email or communication with an ETA within 1-3 business days of placing an order. Many suspension kits ship within 5 business days while some take 7-14 business days (Excluding made to order products like Fortune Auto). While we strive to keep these estimates accurate, please note that we cannot guarantee the exact delivery date. These estimates are subject to change due to weather, holidays, etc.

Availability on back-ordered or custom made products will very and we will keep you informed via email with any arrival date changes. You will receive tracking information as soon as it is available so you can easily track all of your aftermarket car parts from us here at MartiniWorks.
Due to the nature of products arriving overseas or around the world, orders with multiple products may arrive to your door at different times. All shipping prices are based on delivery to the lower 48 states unless specified otherwise and do not include any duties or custom fees you may be subject to.
Aftermarket car parts like intakes, lug nuts, bolts, and smaller items will typically be shipped via USPS or Fedex; in a standard size box. Aftermarket wheels will be shipped in their original box with tracking via Fedex/UPS via LTL; and may arrive at different times to your door.
Wheel & tire packages will be shipped to you via freight and will require signature and courier confirmation. Please keep in mind that many wheel & tire packages will be off-loaded to you via lift gate and MartiniWorks is typically not responsible for any additional charges for that service.

Inspection Upon Delivery

Upon receiving your items, please promptly check them and inform us of any issues, damages, or discrepancies. Before beginning any installation or taking your vehicle to a mechanic, ensure that all components and boxes are accounted for and match the packing list or provided instructions. We cannot cover any expenses incurred from installation delays caused by absent components. Should you find any parts missing or damaged due to shipping, contact us without delay for assistance in obtaining a replacement. Please note, we are unable to address claims for missing or damaged parts if reported more than 14 days after delivery.

Order Policies

Cancellation Policy

For any modifications or cancellations to your order, please contact us immediately, and we will assist you in making the necessary adjustments to your shipment. Our system is designed for rapid processing, meaning your order might be further along in preparation than anticipated. Please be aware that cancellations can incur a restocking fee unless the error was on our part.
If your order has not yet shipped, you may cancel it; however, cancellations due to buyer's remorse, change of interest, or similar reasons will incur a 10% refund processing fee. Please note that while we will make every effort to accommodate your request, we cannot guarantee a cancellation or modification once the order has been processed.
If your order has already been processed or shipped, it may be subject to a restocking fee of up to 30% of the product cost, plus shipping fees. These fees are determined at the vendor's discretion and may be changed or altered at any time. This helps cover shipping expenses and labor involved in handling your order.
For full details on cancellations, exclusions, and eligibility, please visit: https://martiniworks.com/faqs

Return Policy

For full details on returns, exclusions, and eligibility, please visit: https://martiniworks.com/return-policy.

Warranty Details

Manufacturer warranties are fully applicable, and we're here to help ensure you receive a product that meets your standards. In certain cases involving warranties, it may be necessary for the manufacturer to get in touch with you directly. Please be aware that we cannot cover any expenses not specifically included in the manufacturer's warranty, such as shipping or labor costs. If you have any questions or need assistance, don't hesitate to reach out to us. It's important to note that only the original buyer is eligible to make warranty claims.
WARNING: This product can expose you to Nickel, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to p65warnings.ca.gov.