KYOSTAR Equal Length Valved Cat Back Exhaust for BMW F80 M3 F82 F83 M4 S55

The KYOSTAR Equal-Length Valved Sport Cat-Back Exhaust System is an aftermarket exhaust assembly listed for selected BMW F80 M3, F82 M4 Coupe, and F83 M4 Convertible applications equipped with the S55 3.0-liter twin-turbocharged inline-six engine.

Featuring an equal-length exhaust layout and a valved rear exhaust configuration, this system is intended for BMW M performance exhaust customization. The supplied product image shows a formed metallic exhaust pipe assembly, multiple pipe junctions, a rear muffler section, and dual exhaust outlets on each side.

Equal-length exhaust designs are used in aftermarket exhaust development to manage exhaust path lengths. Actual exhaust sound, flow characteristics, and performance depend on the complete system geometry, vehicle configuration, and installation. No independently verified sound or performance measurements have been supplied for this product.

For automotive aftermarket distributors, BMW M performance specialists, professional exhaust workshops, tuning businesses, and performance parts resellers, this product offers a vehicle-specific exhaust system option for the F80/F82/F83 platform.

Exact material grade, tubing diameter, valve operation, installation hardware, and vehicle-specific fitment should be confirmed with KYOSTAR before ordering.

• BMW M Performance Application: Listed for selected BMW F80 M3 and F82/F83 M4 models equipped with the S55 engine.
• Equal-Length Exhaust Design: Features an equal-length layout as specified in the original product information.
• Valved Exhaust Configuration: Incorporates an exhaust valve design; exact actuator and control specifications require confirmation.
• Cat-Back Exhaust Assembly: Identified as an aftermarket cat-back exhaust system for replacement of applicable exhaust sections downstream of the catalytic converters.
• Quad Exhaust Outlet Layout: The supplied image shows two rear exhaust outlets on each side.
• Formed Exhaust Pipe Routing: Features multiple curved metallic pipe sections designed for vehicle-specific routing.
• Sport Exhaust Styling: Features metallic pipework and dark-colored exhaust tips visible in the product image.
• Professional Aftermarket Supply: Relevant to BMW tuning shops, performance exhaust specialists, automotive distributors, and professional resellers.

• BMW F80 M3 Sedan — S55 3.0L Twin-Turbo Inline-6 (source-listed; verify exact model year).
• BMW F82 M4 Coupe — S55 3.0L Twin-Turbo Inline-6 (source-listed; verify exact model year).
• BMW F83 M4 Convertible — S55 3.0L Twin-Turbo Inline-6 (source-listed; verify exact model year).

Source-Listed Year Range: 2014–2020. Exact model years vary by chassis and destination market. Buyers should verify the vehicle's production date and factory exhaust configuration.

• Confirm the vehicle model, chassis, production year, engine code, and factory exhaust configuration before ordering.
• The original product listing combines F80 M3 and F82/F83 M4 applications under one year range. Individual model-year compatibility must be checked.
• Confirm whether the kit is compatible with standard M3/M4, Competition Package, and other factory exhaust configurations.
• Verify whether the exhaust valve system uses factory actuators or requires separate actuators and electronic controls.
• The exact stainless steel grade, pipe diameter, wall thickness, and exhaust tip dimensions have not been provided.
• Confirm the complete package contents, including clamps, gaskets, mounting hardware, valve components, and any required adapters.
• No verified horsepower, torque, sound pressure, or exhaust drone measurements are available.
• Buyers must verify applicable exhaust noise, emissions, and road-use requirements in their destination market.

This equal-length valved cat-back exhaust is listed for selected BMW F80 M3, F82 M4 Coupe, and F83 M4 Convertible applications equipped with the S55 engine.

Buyers should compare the original exhaust routing, catalytic converter outlet connections, mounting points, exhaust hanger positions, rear bumper clearance, and factory valve system before purchasing.

Factory Competition Package exhausts, aftermarket downpipes, regional specifications, and production revisions may affect compatibility. Please confirm the exact exhaust assembly and connection requirements with KYOSTAR.

Professional exhaust installation and a post-installation inspection for leaks, valve operation, and component clearance are recommended.

The KYOSTAR Equal-Length Valved Cat-Back Exhaust System is intended for aftermarket exhaust customization involving selected BMW F80 M3 and F82/F83 M4 vehicles equipped with the S55 engine.

Potential applications include BMW performance exhaust modification projects, professional exhaust workshop services, aftermarket exhaust component distribution, and vehicle-specific exhaust customization.

Actual compatibility, valve operation, installation requirements, and applicable road-use restrictions must be verified before ordering.

KYOSTAR welcomes purchasing inquiries from automotive aftermarket distributors, BMW M performance specialists, professional exhaust workshops, tuning businesses, and performance parts resellers.

For current quantity pricing, minimum order requirements, technical specifications, packaging details, product availability, and shipping arrangements, please provide SKU NA-CB-5095-SS-MB, estimated order quantity, destination market, and intended vehicle application.

Professional buyers are encouraged to request verified pipe dimensions, material specifications, valve control details, complete packing information, and model-specific fitment documentation before placing bulk orders.

Pricing, minimum order quantity, availability, and production or fulfillment lead times are subject to confirmation.

Q1: Which BMW models are listed for this exhaust system?
A: The original product information lists BMW F80 M3 and F82/F83 M4 applications. Exact fitment must be verified by production year and configuration.

Q2: What engine is this exhaust intended for?
A: The listed vehicles use the BMW S55 3.0-liter twin-turbocharged inline-six engine.

Q3: What does equal-length exhaust mean?
A: Equal-length exhaust refers to an exhaust layout designed around matched exhaust path lengths. Exact construction and performance characteristics depend on the system design.

Q4: Is this a valved exhaust system?
A: Yes. The original listing identifies a valved exhaust configuration. Exact actuator and control specifications require confirmation.

Q5: Does the kit include valve actuators or a remote controller?
A: The supplied information does not confirm whether valve actuators, wiring, or a separate controller are included.

Q6: Is this a complete cat-back exhaust system?
A: The product is identified as a cat-back exhaust system. Please confirm the complete pipe sections and installation hardware before ordering.

Q7: Is the exhaust made from stainless steel?
A: The exact material and stainless steel grade have not been verified.

Q8: Will this exhaust change the sound of my BMW M3 or M4?
A: Exhaust configuration and valve operation can affect sound characteristics. No verified sound measurements are available for this specific product.

Q9: Does this exhaust increase horsepower?
A: No verified horsepower or torque improvement figures have been provided.

Q10: Is this exhaust compatible with Competition Package models?
A: Competition Package compatibility must be verified against the factory exhaust system and mounting configuration.

Q11: Can automotive distributors request wholesale pricing?
A: Professional buyers may contact KYOSTAR with estimated order quantities and destination market information to request current purchasing details.

Q12: How can I request a quotation?
A: Submit an inquiry with SKU NA-CB-5095-SS-MB, required quantity, destination country, and any technical or packaging requirements.

Warranty coverage, applicable exclusions, packaging specifications, shipping methods, and estimated production or fulfillment lead times should be confirmed with KYOSTAR before placing an order.

Final package dimensions, shipping weight, valve components, installation hardware, and complete kit contents must be verified before freight quotation.

Buyers should confirm vehicle compatibility, exhaust valve operation, connection requirements, and applicable exhaust noise and emissions regulations before shipment.

For technical specifications, purchasing inquiries, product compatibility questions, or after-sales support, please contact KYOSTAR with the relevant SKU.

Looking to source equal-length valved cat-back exhaust systems for BMW F80 M3 and F82/F83 M4 applications? Contact KYOSTAR with your estimated order quantity, destination market, and required technical specifications to request current product information and a quotation.

Reference SKU: NA-CB-5095-SS-MB