The JDY 4-inch catless downpipe for the Volkswagen EA888 Gen 4 EVO platform is engineered for maximum exhaust flow, faster turbo response, and high-power applications on MQB vehicles.
Designed specifically for EA888 Gen 4 EVO transverse engines, this downpipe features a true 4-inch diameter and fully back-purged welded stainless steel construction, delivering unrestricted exhaust flow with excellent structural integrity and long-term reliability.
This is a purpose-built solution for aggressive street builds, track use, and race-oriented applications.
Key Highlights
-
True 4-inch (102mm) catless exhaust design
-
100% back-purged TIG welded construction
-
304 stainless steel throughout
-
Maximum exhaust flow & reduced backpressure
-
Direct bolt-on installation
-
FWD & AWD compatible
-
LHD & RHD compatible
-
Reducer options for OEM & aftermarket exhaust systems
-
Multiple thermal finish options available
Engineering Advantages
Fully Back-Purged TIG Welded Construction
-
Internal welds protected from oxidation
-
Smooth exhaust flow with no internal contamination
-
Higher fatigue resistance under extreme heat cycles
-
Consistent weld penetration and strength
This level of welding quality is essential for catless, high-output exhaust systems.
True 4” Diameter for Maximum Performance
The JDY downpipe maintains a full 4-inch diameter throughout, larger than most aftermarket offerings.
Performance benefits:
-
Reduced exhaust backpressure
-
Faster turbo spool
-
Improved throttle response
-
Stronger high-RPM power delivery
Ideal for tuned vehicles and upgraded turbo setups.
Flexible Exhaust Compatibility
To ensure compatibility with both factory and aftermarket exhaust systems, JDY includes reducer options:
-
89mm → 65mm
-
Compatible with OEM-diameter mid-pipes
-
-
89mm → 76mm
-
Compatible with enlarged aftermarket exhaust systems
-
No cutting or modification required.
Thermal Finish Options
JDY offers multiple thermal protection options to suit different build goals:
-
Heat-Shielded Version
-
Reduces radiant heat in the engine bay
-
Helps protect surrounding components
-
-
Cerakote Ceramic Coated Version
-
Advanced thermal barrier Ceramic coating
-
Lower surface temperatures
-
Enhanced corrosion resistance and durability
-
These options help manage under-hood temperatures and improve reliability under sustained load.
Track-Focused Catless Design
-
Fully catless for unrestricted exhaust flow
-
Designed for high-power and track-oriented applications
-
Compatible with FWD and AWD layouts
-
Built to withstand aggressive driving and high EGT conditons
Vehicle Compatibility
-
VW Golf GTI MK8 (2022–2025) – EA888 Gen 4 EVO
-
VW Golf R MK8 (2022–2025) – EA888 Gen 4 EVO
-
Audi S3 (8Y) (2022–2025) – EA888 Gen 4 EVO
- VW T Roc R – EA888 Gen 4 EVO
- VW Tiguan R – EA888 Gen 4 EVO
The JDY 4-inch catless downpipe for the Volkswagen EA888 Gen 4 EVO platform is engineered for maximum exhaust flow, faster turbo response, and high-power applications on MQB vehicles.
Designed specifically for EA888 Gen 4 EVO transverse engines, this downpipe features a true 4-inch diameter and fully back-purged welded stainless steel construction, delivering unrestricted exhaust flow with excellent structural integrity and long-term reliability.
This is a purpose-built solution for aggressive street builds, track use, and race-oriented applications.
Key Highlights
-
True 4-inch (102mm) catless exhaust design
-
100% back-purged TIG welded construction
-
304 stainless steel throughout
-
Maximum exhaust flow & reduced backpressure
-
Direct bolt-on installation
-
FWD & AWD compatible
-
LHD & RHD compatible
-
Reducer options for OEM & aftermarket exhaust systems
-
Multiple thermal finish options available
Engineering Advantages
Fully Back-Purged TIG Welded Construction
-
Internal welds protected from oxidation
-
Smooth exhaust flow with no internal contamination
-
Higher fatigue resistance under extreme heat cycles
-
Consistent weld penetration and strength
This level of welding quality is essential for catless, high-output exhaust systems.
True 4” Diameter for Maximum Performance
The JDY downpipe maintains a full 4-inch diameter throughout, larger than most aftermarket offerings.
Performance benefits:
-
Reduced exhaust backpressure
-
Faster turbo spool
-
Improved throttle response
-
Stronger high-RPM power delivery
Ideal for tuned vehicles and upgraded turbo setups.
Flexible Exhaust Compatibility
To ensure compatibility with both factory and aftermarket exhaust systems, JDY includes reducer options:
-
89mm → 65mm
-
Compatible with OEM-diameter mid-pipes
-
-
89mm → 76mm
-
Compatible with enlarged aftermarket exhaust systems
-
No cutting or modification required.
Thermal Finish Options
JDY offers multiple thermal protection options to suit different build goals:
-
Heat-Shielded Version
-
Reduces radiant heat in the engine bay
-
Helps protect surrounding components
-
-
Cerakote Ceramic Coated Version
-
Advanced thermal barrier Ceramic coating
-
Lower surface temperatures
-
Enhanced corrosion resistance and durability
-
These options help manage under-hood temperatures and improve reliability under sustained load.
Track-Focused Catless Design
-
Fully catless for unrestricted exhaust flow
-
Designed for high-power and track-oriented applications
-
Compatible with FWD and AWD layouts
-
Built to withstand aggressive driving and high EGT conditons
Vehicle Compatibility
-
VW Golf GTI MK8 (2022–2025) – EA888 Gen 4 EVO
-
VW Golf R MK8 (2022–2025) – EA888 Gen 4 EVO
-
Audi S3 (8Y) (2022–2025) – EA888 Gen 4 EVO
- VW T Roc R – EA888 Gen 4 EVO
- VW Tiguan R – EA888 Gen 4 EVO
