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Wanmax Racing
4.5 Inch 114mm B58 Gen1 Racing Downpipe for BMW F20 F30 F32 G30 140i 340i 440i 540i SS304 Exhaust Pipe
$244.00
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Categories: Exhaust Downpipe
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DESCRIPTION
Maximize Turbo Exhaust Flow & Speed Up Turbo Spool for BMW B58 Gen1 3.0T Models 2016-2019.
This performance front downpipe is built from thick mandrel bent mirror polished T304 stainless steel, equipped with a massive 114mm / 4.5 inch oversized turbo inlet flange to greatly expand initial exhaust passage and cut exhaust backpressure significantly. The pipeline smoothly tapers down to standard 80mm outlet for seamless connection with original or aftermarket mid pipes. Integrated heavy-duty interlocked braided flex bellows fully absorbs harsh engine shifting vibration, effectively preventing weld fatigue and cracking during long-term high-load driving. Laser-cut OEM spec dual-hole mounting bracket and reserved sensor ports fully match factory chassis layout, supporting direct bolt-on installation without cutting or modification. Handcrafted uniform fish-scale TIG airtight welding delivers outstanding structural stability under sustained extreme high exhaust temperature. Mirror polished smooth metal surface creates clean racing visual effect inside engine bay.
Important Fitment Reminder: This pipe only fits vehicles equipped with Gen1 B58 engine produced 2016-2019, incompatible with B58TU Gen2 and vehicles fitted with OPF filter system. We recommend confirming vehicle chassis, production year and VIN before purchase to avoid mismatching.
VEHICLE FITMENT
- BMW F20 F21 M140i — 2016-2019 (B58 Gen1 3.0L Twin Turbo Inline Six Engine)
- BMW F30 F31 F34 340i — 2016-2019 (B58 Gen1 3.0L Twin Turbo Inline Six Engine)
- BMW F32 F33 F36 440i — 2016-2019 (B58 Gen1 3.0L Twin Turbo Inline Six Engine)
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BMW G30 G31 540i — 2016-2019 (B58 Gen1 3.0L Twin Turbo Inline Six Engine)
KEY FEATURES
- Heavy Gauge Mandrel Bent Premium T304 Stainless Steel Construction: Thick solid pipe wall with excellent anti-rust and high-temperature resistance, durable for daily street and track performance driving.
- Mirror Polished Bright Reflective Smooth Finish: Glossy reflective surface presents neat motorsport style under hood, easy to wipe and clean during routine maintenance.
- 114mm / 4.5 Inch Oversized Turbo Inlet Flange Design: Widened turbo connecting opening maximizes initial exhaust airflow, sharply reduces backpressure and shortens turbo lag obviously.
- Smooth Taper Transition Pipeline: Gradually narrows from large upper body to standard 80mm outlet, perfectly compatible with stock mid pipe and most aftermarket exhaust assemblies.
- Heavy-Duty Interlocked Braided Flexible Bellows Section: Double-layer lined flex pipe buffers strong engine displacement vibration, eliminates risk of weld fracture under long intense high-rev operation.
- Laser Cut OEM Spec Dual-Hole Mount Bracket & Sensor Bungs: Precisely positioned mounting lugs and sensor holes fully align factory installation points, no extra drilling or chassis modification required.
- Uniform Handcrafted Fish-Scale TIG Air-Tight Welding: Flawless seamless airtight welds maintain structural integrity under continuous extreme heat, lower abnormal rattling and exhaust leakage risks.
- Direct OEM Plug & Play Fitment: Entire pipeline replicates original vehicle chassis curve, bolts directly to factory brackets without cutting chassis components.
TECH SPECIFICATIONS
- Main Pipe Material: Thick Mandrel Bent T304 Stainless Steel with Mirror Polished Finish
- Turbo Inlet Diameter: 114mm / 4.5 Inch Oversized Flange
- Outlet Diameter: Standard 80mm
- Vibration Buffer: Heavy-Duty Interlocked Braided Flexible Bellows
- Welding Process: Handcrafted Fish-Scale TIG Seamless Air-Tight Welding
- Compatible Engine: B58 Gen1 3.0L Twin Turbo Inline Six — 2016-2019
WHAT'S IN THE BOX
- 1x Complete Mirror Polished 114mm Oversized Inlet High Flow Front Downpipe Assembly
- Full Set OEM Matching Installation Clamps & Hardware Kit
