SMY BBC Carbon Fiber Top Mount Intercooler Pipe Subaru 2022-2026 WRX / Ascent / Outback / Legacy

Shatter every airflow bottleneck and elevate your FA24 engine bay with the true alpha of top-mount intercooler piping: the SMY BBC (Big Boi Carbon) Top Mount Intercooler Pipe.
While the SMY Godzilla set the benchmark for cast aluminum upgrades, the SMY BBC represents over two years of relentless research, development, and prototyping to create the absolute highest-flowing, least-obstructed TMIC inlet pipe on the market. Where the factory plastic pipe constricts air down to a choking 60mm and standard aftermarket aluminum pipes stop at 63.5mm, the Big Boi Carbon opens the floodgates with a cavernous 70mm (2.75-inch) inner diameter.
Crafted end-to-end from 100% aerospace-grade carbon fiber with a rigid 2.5mm wall thickness, this pipe eliminates the heat-soak vulnerabilities inherent to metal piping while stripping weight from your top end. It features a glass-smooth internal bore with zero welds or sharp transitions, ensuring maximum volumetric efficiency and lightning-fast turbo spool. Because upgrades shouldn't lock you into a single ecosystem, SMY includes two distinct 4-ply silicone reducers in the box—allowing this carbon masterpiece to bolt seamlessly to both the factory lower charge pipe and enlarged aftermarket lower pipes without buying extra couplers.

Features:
- The Market's Largest Bore (70mm / 2.75"): Boasting an industry-leading 70mm internal diameter, the BBC out-flows the 60mm OEM plastic pipe and standard 63.5mm aftermarket metal pipes to push the highest possible air volume into your intercooler.
- 100% Full Carbon Fiber Construction: Engineered end-to-end from premium carbon fiber with a 2.5mm wall thickness. This lightweight composite construction completely rejects engine bay heat soak, keeping charge temperatures cooler during aggressive driving.
- Frictionless Airflow Pathway: Built with zero welds, seams, or sharp bends, creating a laminar airflow corridor that maximizes velocity and throttle response.
- Dual Silicone Reducers Included: Ships with two heavy-duty 4-ply black silicone couplers (1x 2.5"-to-3" and 1x 2.75"-to-3"), guaranteeing plug-and-play compatibility whether you are running the stock lower charge pipe or an aftermarket 2.75-inch lower pipe.
- Genuine OEM Hardware + Carbon Protection: Includes a genuine Subaru OEM O-Ring Gasket (#21896AA190) and three Subaru OEM Bolts (#010108300). To protect the premium weave, SMY includes three custom rubber washers that sit between the bolt heads and the carbon flange to prevent surface crushing when torqued down.
- Universal TMIC Compatibility: Integrated OEM-style guide pins ensure a leak-free fit on factory intercoolers as well as aftermarket top-mounts from COBB, AMS, PLM, ETS, Mishimoto, and GrimmSpeed.

Head-to-Head Comparison:

Specs:
- 100% High Strength Woven Carbon Fiber
- Pipe Inner Diameter = 70mm (OEM is 60mm)
- Pipe Wall Thickness = 2.5mm
- 4 Ply Black Silicone Reducer

Includes:
- 1 x SMY Carbon Fiber Intercooler Pipe
- 1 x Subaru OEM O-Ring Gasket part# 21896AA190
- 3 x Subaru OEM Bolts part# 010108300
- 3 x Rubber Washers (these are used between the bolt and the carbon fiber flange)
- 2 x 4 Ply Black Silicone Reducer (1 x 2.5" to 3" & 1 x 2.75" to 3")
- 2 x SMY Black Dual Bead Worm Clamps

Notes:
- Best Results when Installed with COBB's Chargepipe - Part# 746110
- SMY recommends a Protune to maximize its use, but not required
- Easy Installation (10- 15min)
- Torque Down 3 Bolts 22ft/lbs. each
- Fits OEM and Aftermarket Chargepipes (must use the SMY Silicone Coupler)
- IAG AOS fitment shown in product images. The bracket has to be modified, as you can see in the image, or Complain to IAG.

Applications:
2022-2026 Subaru WRX
2019-2026 Subaru Ascent FA24
2020-2026 Subaru Outback FA24 / Wilderness
2020-2025 Subaru Legacy FA24