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Borla S-Type Axle-Back Exhaust - 2024-2026 Mustang GT S650 Active Exhaust Carbon Fiber 11985CFBA
Backordered - Call or Email For ETA
- Borla S-Type Axle-Back for 2024-2026 Mustang GT with Active Exhaust
- T-304 stainless steel, 4 inch carbon fiber with black anodized base tips
- Fits coupe and convertible
- Million-Mile Warranty
Million-Mile Warranty
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.
Sound character.
The Borla benchmark. Moderately aggressive at WOT, refined at cruise. The sound most owners pick first time.
The spec sheet.
Built like the most-winning exhaust brand means it.
California Prop 65 Warning
S-TYPE AXLE-BACK EXHAUST SYSTEM
2024-2026 Ford Mustang GT & Dark Horse | 5.0L Coyote V8 | Active Exhaust | Carbon fiber with black anodized base Tips
S-Type (Refined)
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
WHAT THIS DOES
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 and Dark Horse. Unbolt two clamps, slide the stock mufflers off, bolt these on. Under an hour in a driveway.
S-Type tuning sits between stock and the ATAK on volume. Noticeable from outside, comfortable on a long highway drive. Borla’s Polyphonic Harmonizer inside the muffler kills drone without restricting flow. All factory Active Exhaust modes still work — quiet mode stays quiet, sport mode opens up.
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.
WHAT IT’S MADE OF
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 37.7 lbs boxed (45 x 11 x 21 inches).
MADE IN USA
NO DRONE
T-304 STEEL
1M MILE WARRANTY
TIP OPTIONS
This listing is for the carbon fiber tips (11985CFBA). Borla also makes this same system with polished chrome tips (11985, $1,918.99) and black chrome tips (11985BC, $2,017.99). Same exhaust, different look at the rear. Contact us if you want a different tip finish.
SPECIFICATIONS
| Part Number | 11985CFBA |
| System Type | Axle-Back (rear section only) |
| Sound Level | S-Type (Refined) |
| Active Exhaust | Yes — all factory modes retained |
| 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 & Dark Horse — Coupe and Convertible |
| Weight (boxed) | 37.7 lbs — 45 x 11 x 21 in. |
| Origin | Made in USA |
| Warranty | Borla Million-Mile Warranty |
CONFIRMED FITMENT
- 2024-2026 Ford Mustang GT 5.0L V8 — Coupe and Convertible — with Active Exhaust
- 2024-2026 Ford Mustang Dark Horse 5.0L V8 — Coupe — with Active Exhaust
Auto and manual trans. Bolt-on install. Requires factory Active Exhaust. Does NOT fit GTs without Active Exhaust.
Backed By
Borla Million-Mile Warranty
Borla on the Ford Mustang.
Will it fit your car.
| Vehicle | Years | Engine |
|---|---|---|
| Ford Mustang GT | 2024–2026 | 5.0L Coyote V8 |
FFP installs Borla weekly in Thousand Oaks.
— Why we stock this
This is the Borla part our customers ask for most.
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
Upgrade to a Cat-Back.
Borla ATAK Cat-Back Exhaust - 2024-2026 Mustang GT S650 Non-Active Black Chrome 140970BC
Borla ATAK Cat-Back Exhaust - 2024-2026 Mustang GT S650 Non-Active Chrome 140961
Borla ATAK Cat-Back Exhaust - 2024-2026 Mustang GT S650 Active Exhaust Chrome 140963
Borla ATAK Cat-Back Exhaust - 2024-2026 Mustang GT S650 Non-Active Carbon Fiber 140961CFBA
Borla ATAK Cat-Back Exhaust - 2024-2026 Mustang GT S650 Non-Active Black Chrome 140961BC
Borla S-Type Cat-Back Exhaust - 2024-2026 Mustang GT S650 Active Exhaust Chrome 140962
Shop the full Borla catalog at FFP.
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.