JDY BMW M3/M4 Equal-Length Exhaust Midpipe Kit

JDY Equal‑Length Midpipe Kit – BMW S58

Transform the sound, flow, and character of your BMW. Engineered for S58‑powered models, the JDY Equal‑Length Midpipe Kit replaces the factory uneven exhaust routing with a smoother, balanced design. Featuring dual 76mm tubing and an integrated 57mm X‑pipe, this system enhances exhaust flow, reduces rasp, and delivers a deeper, more refined tone — all while maintaining OEM‑style fitment.

🔧 Key Features

• Dual 76mm High‑Flow Tubing – Greater flow capacity than standard 70mm aftermarket systems, optimized for high‑RPM performance.

• Equal‑Length Routing – Both exhaust paths repositioned for balanced pulses and cleaner tone.

• 57mm Integrated X‑Pipe – Balances pressure between banks, reducing rasp, uneven pulses, and cabin drone.

• Balanced Performance – Supports responsive low‑mid torque while retaining excellent high‑RPM flow.

• Fully TIG‑Welded & Argon‑Purged – Strong, gas‑tight welds for durability under vibration and heat cycles.

• Upgraded Reinforced Chassis Brace – Raised design for clearance, added rigidity, and OEM mounting points.

• OEM‑Style Fitment – Factory‑style mounting, precision connections, and included 3D‑printed installation tools.

• High‑Strength Hardware – 12.9‑grade studs resist heat, vibration, and loosening.

🚘 Vehicle Compatibility

• BMW G80 M3

• BMW G82 M4 (S58‑powered models only)

📦 Package Contents

• JDY dual 76mm equal‑length midpipe assembly

• Integrated 57mm X‑pipe

• Upgraded raised chassis reinforcement brace

• High‑strength installation hardware

• 3D‑printed installation tools

Upgrade your BMW’s exhaust with JDY’s Equal‑Length Midpipe Kit — engineered for smoother flow, deeper tone, and uncompromising performance.

If your item is in stock and the order is placed before 3 PM, it will ship the same day. Products that include ceramic coating are shipped the following business day. If the product or color you’re looking for is out of stock, you can join the waitlist by clicking the “Email When Available” button. We’ll notify you as soon as it’s back and provide an estimated restock time.

Custom Orders
For custom requests, please email us directly. We’ll review your order and provide an estimated delivery time based on the required manufacturing process.

Damaged, Incorrect, or Missing Items
If your order arrives damaged, incorrect, or missing parts, simply email us a photo along with your order number. We’ll arrange a refund or exchange right away. Contact us at info@ttmengineering.se and we’ll make it right.

Returns & Satisfaction
Unused and uninstalled products are eligible for a refund, exchange, or store credit. Unfortunately, once a product has been used or installed, we cannot accept returns or offer refunds. If you decide you don’t like a product after installation, it will not qualify for return.

Restocking Fee
A restocking fee of 20% of the original purchase price may apply to returned products. This fee covers the costs of processing and restocking. Please refer to our Policies Page for full details on exchanges and returns.