BC Racing BR Series Coilovers for 04-08 Acura TSX CL7/CL9

BC Racing BR Series Coilovers - 2004-2008 Acura TSX (CL9)

Here's how it usually goes on a CL9. You want the car lower, so you throw a set of lowering springs on the factory struts because it's the cheap way in. It looks great for about a year. Then the ride turns to garbage, the rear starts crashing over every expansion joint, and you find out your OEM struts blew out because they were never valved to control a shorter, stiffer spring. Now you're buying suspension twice. These BC Racing BR coilovers skip that whole story, the damper and spring are engineered to work together from the start, and you get to choose exactly how low the car sits.

The Damper And Spring Actually Match

That's the fundamental thing springs-on-struts can never give you. A damper's job is controlling the spring, so when you change the spring and keep the old damper, it's fighting a spring it was never built for and it dies early. On the BR Series, the mono-tube shock and the spring were developed together, and BC valves them as a system. On top of that you get 30 clicks of compression and rebound adjustment, dialed together with a single knob, so you're not locked into whatever ride BC decided you should have. Soft for the commute, firm when you want to lean on it, your call, adjustable in about ten seconds per corner.

You Bought A TSX, Don't Ruin It

This is where BC's spring rate philosophy actually earns its money on a car like yours. The CL9 is a refined car, that's the whole reason you own one instead of a Civic, and the fastest way to wreck it is bolting on suspension that's oversprung for the chassis. Plenty of brands just fit the stiffest springs on the shelf and call it performance. BC tests each application and picks rates that balance comfort and control, and on this kit that means 9 kg/mm front and 3.6 kg/mm rear. Notice how soft that rear rate is compared to what you'd see on a lightweight Honda chassis, that's not an accident, that's the kit being tuned for a TSX rather than pulled off a shelf. You end up with a car that's genuinely more composed when you push it and still civilized on your commute.

Standard Or Extreme Low: Pick Your Drop

Two versions, and the difference is how far down they'll take you:

• Standard. About an inch below stock at its highest setting, and roughly 2.5 to 3 inches below stock wound all the way down. This is the pick if you still have to deal with real driveways, parking garages, and speed bumps on a daily basis.
• Extreme Low. Starts around 2 inches below stock at its highest setting and gets to about 4 inches below at the lowest. If the Standard kit's bottom setting isn't low enough for what you're picturing, this is your kit.

Simple version: daily driver, Standard. Chasing an aggressive stance, Extreme Low. And note that real-world ride height varies with chassis tolerances, so treat those figures as the range, not a guarantee.

Low Without Losing Your Suspension

One more reason this beats the cheap route. On the BR Series, ride height adjusts independently of spring compression, meaning you drop the car by moving the lower mount instead of collapsing the spring. Your suspension keeps its travel, so the damper still has room to do its job. That's the difference between a CL9 that sits low and drives well and one that sits low and beats you up, and it's exactly what springs on stock struts can't offer at any price.

Built To Last, And You Can Rebuild Them

Mono-tube design with a linear piston and damping curve, so the damping stays predictable through the whole stroke instead of getting strange at the extremes. Backed by a 2-year warranty against manufacturer defect. And they're fully rebuildable, so years from now when they're finally worn, you send them in for a refresh instead of buying another set. If you want something specific, custom spring rates, Swift springs, and custom valving matched to your rates are all available.

What You Get

• BC Racing BR Series coilovers for the 2004-2008 Acura TSX (CL9)
• Available in Standard or Extreme Low
• 9 kg/mm front and 3.6 kg/mm rear spring rates
• 30 clicks of simultaneous compression and rebound adjustment
• Height adjustment independent of spring compression
• Standard: about 1 inch below stock at the highest setting, 2.5 to 3 inches at the lowest
• Extreme Low: about 2 inches below stock at the highest setting, about 4 inches at the lowest
• Mono-tube shock design with a linear piston and damping curve
• Custom spring rates, Swift springs, and custom valving available
• Fully rebuildable
• 2-year warranty against manufacturer defect

Fits These Cars

• 2004-2008 Acura TSX (CL9)
• Also fits the CL7 chassis

Note: Available in Standard and Extreme Low versions. Actual ride height varies with chassis tolerances, so published drop figures are approximate. Fully rebuildable and backed by a 2-year warranty against manufacturer defect. One coilover set per order.