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Borla covers every part for the life of your vehicle. The world's most experienced (and winningest) exhaust brand stands behind this part forever.
Authorized Borla dealer. Borla MAP pricing — same as Borla direct. Expert install available in Thousand Oaks, CA. Questions? Chat with Senna or call our Mustang specialist.
Borla's most aggressive street-legal tune. Race-bred volume with patented Borla Polyphonic Harmonizer technology — loud where you want it, civil at cruise.
2024-2026 Ford Mustang GT S650 | 5.0L Coyote V8 | Non-Active Exhaust | Carbon fiber with black anodized base Tips
ATAK (Loudest)
T-304 Stainless Steel
2.5″ / 3″
4″ Quad Carbon fiber with black anodized base
HEAR THE BORLA
ATAK vs S-Type vs Stock on the 2024+ S650 Mustang GT
The axle-back is the rear section only — mufflers and tips. Keeps your factory mid-pipe and cats completely untouched. This is the fastest bolt-on exhaust upgrade for the S650 GT. Unbolt two clamps, slide the stock mufflers off, bolt these on. Under an hour in a driveway.
ATAK is the loudest tuning Borla makes. On the non-active GT, there are no valves to quiet it down — you get the full ATAK volume at all times. Deep V8 rumble at idle, aggressive under throttle, with Borla’s Polyphonic Harmonizer keeping drone off the highway.
Fits both coupe and convertible. Same part number, same install. The quad 4-inch carbon fiber with black anodized base tips fill the rear bumper cutouts on both body styles.
T-304 stainless steel, not the T-409 that cheaper brands use. Won’t rust, pit, or discolor. Every bend is mandrel-bent (not crush-bent) for smooth flow, and each system is CNC-machined for bolt-on fitment. Made in the USA. Ships at 32.2 lbs boxed (45 x 11 x 21 inches).
MADE IN USA
NO DRONE
T-304 STEEL
1M MILE WARRANTY
This listing is for the carbon fiber tips (11984CFBA). Borla also makes this same system with polished chrome tips (11984, $989.99) and black chrome tips (11984BC, $1,039.99). Same exhaust, different look at the rear. Contact us if you want a different tip finish.
| Part Number | 11984CFBA |
| System Type | Axle-Back (rear section only) |
| Sound Level | ATAK (Loudest) |
| Active Exhaust | No — for GTs without factory Active Exhaust |
| Pipe Diameter | 2.5 in. into muffler, 2.5 in. and 3 in. out |
| Tip Size / Shape | 4″ round, quad |
| Tip Finish | Carbon fiber with black anodized base |
| Exit Style | Dual split rear |
| Construction | T-304 stainless, mandrel-bent, CNC-machined |
| Muffler Tech | Polyphonic Harmonizer (multi-tone, no drone) |
| Body Style | GT Coupe and Convertible (non-active) |
| Weight (boxed) | 32.2 lbs — 45 x 11 x 21 in. |
| Origin | Made in USA |
| Warranty | Borla Million-Mile Warranty |
Auto and manual trans. Bolt-on install. For GTs WITHOUT factory Active Exhaust only. Does NOT fit Dark Horse. Does NOT fit GTs with Active Exhaust.
Backed By
Borla Million-Mile Warranty
| Vehicle | Years | Engine |
|---|---|---|
| Ford Mustang GT | 2024–2026 | 5.0L Coyote V8 |

If you want the install done by experienced Mustang techs who run Borla daily, drop the car off in Thousand Oaks. Otherwise, this is a direct bolt-on with clear instructions and clamp reuse from your existing Borla Cat-Back system.
Authority: Charles Siritho · McLaren Artura Trophy owner · Spotter for Branden Sorensen FD Pro (E46 LS+Whipple, 6th at Long Beach R1 2026) · 10 yrs S550/S650 Mustang specialist






133 Borla parts — Cat-Backs, Axle-Backs, X-Pipes, H-Pipes, Connecting Pipes — for Mustang, Corvette, Camaro, Silverado, F-150, and more. MAP pricing always. Expert install in Thousand Oaks.