SRM850

The new benchmark 

in street performance 

for the 4.0TFSI 

platform.

Drop in package that includes everything you need to make up to 850WHP.

• SRM850 Billet Turbochargers for 4.0TFSI
• Upgraded Exhaust Manifolds with Turbine Housing for 4.0TFSI
• SRM Port Injection Spacer Kit for 4.0TFSI
• SRM Intakes for 4.0TFSI 
• LPFP Upgrade for 4.0TFSI
• Ethanol Sensor and Lines Kit for Flex Fuel
• W2A to Throttle Body Intake Spacer
• Tial Wastegate Actuators for 4.0TFSI
• Software Calibration for DS1

Results

This kit has consistently tested at 800-850WHP on our in house Heartbreaker Mustang Dyno, which is well over 900WHP DynoJet, all while spooling up before 4000RPM and pulling hard to redline for the ultimate street car.

838WHP@744WTQ Mustang Dyno

SRM850 Billet Turbochargers

Our SRM850 Billet Turbochargers are the newest and latest iteration of our +4 Turbochargers which have been proven for years on the 4.0TFSI platform to make good, reliable and responsive power. 

Extremely fast spool up with a large enough compressor wheel to flow up to 850WHP in the SRM850 package. 

Engineering, Finish Machining, Final Assembly and QC at our production facility in Nevada, USA.

SRM850 Turbochargers

SRM 4.0TFSI Exhaust Manifold with 

Integrated Turbine Housing

Our Upgraded Exhaust manifolds with Integrated Turbine Housings alleviate cylinder 5 miss-fire issues due to excessive back-pressure often experienced by people running stock exhaust manifolds and allow the engine to exhale freely thereby alleviating the major bottleneck in the 4.0TFSI engine. 

The upgraded exhaust manifolds are an integral part in the SRM850 kit allowing the package to reach such high power output by flowing significantly more than the factory exhaust manifolds without sacrificing the extremely responsive spool that the 4.0TFSI is known for. 

These same exhaust manifolds are proven well over 1000WHP on flagship and development vehicles and are the result of years of development. 

Engineering, Final Assembly and QC at our Production Facility in Nevada, USA.

4.0TFSI Manifolds with Turbine Housing

SRM 4.0TFSI Port Injection Kit

Our Proprietary Port Injection Kit enables the SRM850 Package to run up to E100 and provides fuelling far beyond what the factory DI system is capable of. 

This port injection kit utilizes injection sandwich plates between the factory air duct and factory intake manifold for a drop in solution. 

Below we see the difference Port Injection makes on the SRM850 kit. The DI system topped out at 694WHP Mustang and our PI system allowing the kit to make 818WHP Mustang on this run on e60, and it is capable of flowing even more than this kit requires giving adequate overhead.

Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.

4.0TFSI Port Injection Kit

Port Injection Upgrade (Faint Line) versus Direct Injection Only (Dark Line)

SRM 4.0TFSI Intakes

Our Proven SRM Intakes are a requirement, allowing the Turbochargers to breathe well and are a significant upgrade over the stock intakes which are a known bottleneck on this platform due to their restrictive design.

Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.

SRM 4.0TFSI Intakes

SRM 4.0TFSI LPFP Upgrade

Essential to deliver enough fuel to the Factory Direct Injection and Port Injection System to achieve these power levels is the SRM 4.0TFSI LPFP Upgrade. 

Proven dual LPFP solution that we have offered for years. These kits are extremely reliable and provide the heavy lifting for fueling the SRM850 package.

Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.

SRM 4.0TFSI LPFP Upgrade

Flex Fuel Lines and Sensor

To enable Flex Fuel use on the 4.0TFSI, the flex fuel lines and sensors are required. This with DS1 allows the kit to utilize flex fuel.

Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.

Flex Fuel Sensor Kit and Fuel Lines

Throttle Body Spacer

The 4.0TFSI Throttle Body Spacer protects the W2A Intercooler Plastic from premature failure

Engineering, Production and QC at our Production Facility in Nevada, USA.

Throttle Body Spacer

Tial Wastegate Actuators and 

Bracket for 4.0TFSI

Upgraded Tial Wastegate Actuators and Billet Bracket for 4.0TFSI to replace the weaker factory wastegate actuators

Tial Wastegate Actuators

DS1 Software Calibration

Before today the standard in the 4.0TFSI community has been piecing together parts that then require custom tuning which is a headache and has mixed results. 

Hardware variance and lack of access to a Dyno for most custom tunes provides limited and inconsistent results. Dealing with custom tuners can be time consuming and expensive. Tuning without a Dyno and a tuner present to monitor the vehicle can be dangerous and expensive. 

We have addressed these issues based on feedback from our Customers and the Community in the SRM850 package by packaging the kit with a hardened calibration developed on our development vehicles on our in house Mustang Dyno. When you use the SRM850 kit, the calibration is already done. The tune is hardened and ready to use out of the box.

It's as simple as it is powerful.

Flex Fuel Capability

Our Flex Fuel System, Port Injection System, and LPFP upgrade, when used with DS1, allow you to fill up any ethanol percentage from E0-E100. 

No more worrying about overstressing your fuel system with high ethanol concentrations. This kit addresses fuel flow completely, allowing you to just fill up with Flex Fuel and enjoy your car. 

Simply fill up with any concentration of Ethanol, and the Calibration in conjunction with the hardware will account for your ethanol concentration seamlessly, adjusting power output accordingly to a given concentration of Ethanol.

Compatibility

• C7 & C7.5 RS7, S7, S6
• D4 S8/A8 (4.0TFSI)
• Requires DS1

Requirements

• This kit must be used in its entirety!
• Failure to do so will result in the kit not being eligible for calibration or technical support!
• Meaning : The kit must be implemented completely, and you are only to omit required parts of the kit if you already have them. Failure to adhere to this will result in you being denied support, calibration, and refund! However, if parts of the kit are omitted accidentally, please contact support and we will help you order them and regain access to calibration and support. If you omit parts of the kit, and an issue arises that could be attributed to the omission of said part in the build, we will ask you for photographs of the parts you omitted in the order installed on the vehicle before proceeding with support.
• The base of the kit, the SRM850 Turbochargers, SRM850 Exhaust manifold and SRM850 Port Fuel Injection setup is by default part of the SRM850 kit and no substitutions or omissions can be made on the core of the kit.
• The supporting modifications included in the kit, SRM Intakes, SRM LPFP, Ethanol Lines and Flex Sensor package, W2A Throttle Body Spacer, and Tial Wastegates for the 4.0TFSI, may only be omitted if you already have them! No exceptions!
• The SRM850 kit REQUIRES a DS1 for calibration. You must already have a DS1, or select one from the add-on menu. 

Notes

• A TCU Tune is HIGHLY Recommended and is available as an add-on
• Note we recommend a free flowing exhaust as the factory exhaust is restrictive and will reduce the performance of the kit. If you need an upgraded exhaust we offer a Dual 3" Exhaust solution as an add-on upgrade.
• This kit is for Off Road Use Only and should be installed by a professional.
• Requires sending in Exhaust Manifolds as cores prior or a core charge of 1000$ will be required

THIS KIT IS A MINIMUM 2 WEEK LEAD TIME - PLEASE CONFIRM WITH OUR SALES DEPT BEFORE SCHEDULING A MECHANIC

SRM1000

For the enthusiast

That demands the ultimate 

performance

For their 4.0TFSI.

Drop in package that includes everything you need to make up to 1000WHP.

• Xona Billet Turbochargers for 4.0TFSI
• Upgraded Exhaust Manifolds with Turbine Housing for 4.0TFSI
• SRM A2A with Port Injection for the 4.0TFSI
• SRM 3" Intakes for 4.0TFSI 
• LPFP Upgrade for 4.0TFSI
• Ethanol Sensor and Lines Kit for Flex Fuel
• Tial Wastegate Actuators for 4.0TFSI
• Software Calibration for DS1

Results

This kit has consistently tested at 950-1000WHP on our in house Heartbreaker Mustang Dyno, which is well over 1100WHP DynoJet. The highest performance kit available for the 4.0TFSI platform.

992WHP@919WTQ Mustang Dyno

SRM1000 Billet Xona Ball Bearing 

Turbochargers

Our SRM1K Billet Turbochargers are the result of years of research and development bringing the ultimate drop in Turbocharger solution to the 4.0TFSI platform. These have been powering our Flagship and Development vehicles for years.

Limitless top end with mind numbing boost numbers.

Why Xona? It's simple. They're USA made, rebuildable, and offer the highest possible performance in this form factor. Xona Turbochargers power our flagship and R&D vehicles making upwards of 1200WHP. 

Engineering, Finish Machining, Final Assembly and QC at our production facility in Nevada, USA.

SRM1000 Xona Turbochargers

SRM Air to Air Intercooler with 

Integrated Port Injection

One of our flagship products, and first to market in the 4.0TFSI world, the result of years of development and iteration, is the 4.0TFSI A2A with Port Injection offering from SRM. 

This gorgeous piece has billet CNC end tanks, a large core, and integrated port injection via billet CNC snouts. This is the crown jewel of any 4.0TFSI and is every bit as functional as it is stunning. 

The A2A keeps charge temperatures low during a pull, and the Port Injection integration allows use of ethanol concentrations up to E100.

Engineering, Production, Final Assembly and QC at our Production Facility in Nevada, USA.

Air to Air Intercooler Core Featuring Billet CNC End Tanks

Air to Air Intercooler Kit with Port Injection System

SRM 4.0TFSI Exhaust Manifold with 

Integrated Turbine Housing

Our Upgraded Exhaust manifolds with Integrated Turbine Housings alleviate cylinder 5 miss-fire issues due to excessive back-pressure often experienced by people running stock exhaust manifolds and allow the engine to exhale freely thereby alleviating the major bottleneck in the 4.0TFSI engine. 

The upgraded exhaust manifolds are an integral part in the SRM1000 kit allowing the package to reach such high power output by flowing significantly more than the factory exhaust manifolds without sacrificing the extremely responsive spool that the 4.0TFSI is known for. 

These same exhaust manifolds are proven on flagship and development vehicles and are the result of years of development. 

Engineering, Final Assembly and QC at our Production Facility in Nevada, USA.

4.0TFSI Manifolds with Turbine Housing

SRM 3" 4.0TFSI Intakes

The big brother of our SRM 4.0TFSI Intakes, the SRM 3" Intakes, are a requirement, allowing the Turbochargers to breathe well and are a significant upgrade over the stock intakes which are a known bottleneck on this platform due to their restrictive design. The inclusion of the A2A in this kit allows the larger intakes to fit.

Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.

SRM 4.0TFSI Intakes (RS7/S7/S6 Variant)

SRM 4.0TFSI Intakes (S8 Variant)

SRM 4.0TFSI LPFP Upgrade

Essential to deliver enough fuel to the Factory Direct Injection and Port Injection System to achieve these power levels is the SRM 4.0TFSI LPFP Upgrade. 

Proven dual LPFP solution that we have offered for years. These kits are extremely reliable and provide the heavy lifting for fueling the SRM1000 package.

Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.

SRM 4.0TFSI LPFP Upgrade

Flex Fuel Lines and Sensor

To enable Flex Fuel use on the 4.0TFSI, the flex fuel lines and sensors are required. This with DS1 allows the kit to utilize flex fuel.

Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.

Flex Fuel Sensor Kit and Fuel Lines

Tial Wastegate Actuators and 

Bracket for 4.0TFSI

Upgraded Tial Wastegate Actuators and Billet Bracket for 4.0TFSI to replace the weaker factory wastegate actuators

Tial Wastegate Actuators

Full 3" Dual Exhaust

Our in-house full dual 3" exhaust allows the turbochargers to breathe, available with or without mufflers. Fully stainless construction.

Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.

DS1 Software Calibration

Before today the standard in the 4.0TFSI community has been piecing together parts that then require custom tuning which is a headache and has mixed results. Hardware variance and lack of access to a Dyno for most custom tunes provides limited and inconsistent results. Dealing with custom tuners can be time consuming and expensive. Tuning without a Dyno and a tuner present to monitor the vehicle can be dangerous and expensive. We have addressed these issues based on feedback from our Customers and the Community in the SRM1000 package by packaging the kit with a hardened calibration developed on our development vehicles on our in house Mustang Dyno. When you use the SRM1000 kit, the calibration is already done. The tune is hardened and ready to use out of the box.

It's as simple as it is powerful.

Flex Fuel Capability

Our Flex Fuel System, Port Injection System, and LPFP upgrade, when used with DS1, allow you to fill up any ethanol percentage from E0-E100. No more worrying about overstressing your fuel system with high ethanol concentrations. This kit addresses fuel flow completely, allowing you to just fill up with Flex Fuel and enjoy your car. Simply fill up with any concentration of Ethanol, and the Calibration in conjunction with the hardware will account for your ethanol concentration seamlessly, adjusting power output accordingly to a given concentration of Ethanol.

Compatibility

• C7 & C7.5 RS7, S7, S6
• D4 S8/A8 (4.0TFSI)
• Requires DS1

Requirements

• This kit must be used in its entirety!
• Failure to do so will result in the kit not being eligible for calibration or technical support!
• Meaning : The kit must be implemented completely, and you are only to omit required parts of the kit if you already have them. Failure to adhere to this will result in you being denied support, calibration, and refund! However, if parts of the kit are omitted accidentally, please contact support and we will help you order them and regain access to calibration and support. If you omit parts of the kit, and an issue arises that could be attributed to the omission of said part in the build, we will ask you for photographs of the parts you omitted in the order installed on the vehicle before proceeding with support.
• The base of the kit, the SRM1000 Turbochargers, SRM1000 Exhaust manifold and SRM A2A with Port Fuel Injection setup is by default part of the SRM1000 kit and no substitutions or omissions can be made on the core of the kit.
• The supporting modifications included in the kit, SRM Intakes, SRM LPFP, Ethanol Lines and Flex Sensor package, Full 3" SRM Exhaust and Tial Wastegates for the 4.0TFSI, may only be omitted if you already have them! No exceptions!
• The SRM1000 kit REQUIRES a DS1 for calibration. You must already have a DS1, or select one from the add-on menu. 

Notes

• A TCU Tune is REQUIRED and is available as an add-on
• This kit is for Off Road Use Only and should be installed by a professional.
• Requires sending in Exhaust Manifolds as cores prior or a core charge of 1000$ will be required

THIS KIT IS A MINIMUM 2 WEEK LEAD TIME - PLEASE CONFIRM WITH OUR SALES DEPT BEFORE SCHEDULING A MECHANIC

The Urus/RS Q8 Intercoolers have been meticulously designed and engineered to fit exactly like the OEM units they replace. Utilizing all factory mounting points, the installation is straightforward with a “drop-in fit” design. No cutting or modifications are required, and there is no need for aftermarket shrouds or hoses. All mating OEM components can be reused and reinstalled.

Sold as a pair (Left & Right Intercoolers)
Eliminates Heat Soak and Lower Intake Air Temperatures (IAT) for Maximum Performance in High-Performance and Race Conditions
Formula-1 Performance Grade Cores by PWR (2-Row Cores features Rolled Tubes w/ Inner Fins)
CNC Machined Billet End Tanks
100% TIG Welded vs OEM Crimped Plastic End Tanks for Maximum Strength & Durability
Made in the USA at PWR North America
Integrated 1/8th NPT Port with plug on lower outlet tank for Water-Methanol Injection
OEM Style Inlet/Outlet Connections for Precise Fitment With All OEM Components
Finished in CSF’s Thermal Dispersion Ceramic Coating (CSF #8211)
Raw Finish with no coating for the “show” look or custom finishes available upon request (CSF #8211R)
True Plug-and-Play “Drop-in Fit” Installation Requires Absolutely No Modifications
R&D and Performance Testing by Pacific German & VF Engineering
1-Piece Welded Charge Pipe vs OEM Bolt-On Pipe w/ O-Ring (known failure point)

Performance Gains:
Stage 1 (Stock Tune) – Approx. +20 WHP / +18 WTQ*
Stage 2 (With High-Performance Tune) – Approx. +10 WHP / + 20 WTQ*
*Estimated Performance based on same engine platform Audi C8 RS6/RS7 CSF Intercoolers

Applications:
2019+ Lamborghini Urus
2020+ Audi RS Q8

EVE-C8RS6-CF-INT : Audi C8 RS6/RS7 Intake GLOSS carbon
EVE-C8RS6-CFM-INT : Audi C8 RS6/RS7 Intake MATTE carbon

AUDI C8 RS6 RS7

Performance Increase – Stock ECU : 15-25hp, 11-20ft-lbs
Performance Increase – Stage 1* : 45-50hp, 40-45ft-lbs
Stage 1 Acceleration 100-200Km/h : Reduced by 0.6s
Performance Increase – Stage 2* : 60-80hp, 60-70ft-lbs

The Audi C8 RS6 intake system is the culmination of extensive development, testing and prototyping. Our aim was to address 2 main criteria: 1) Increased flow rate. 2) Smooth Airflow. The first objective was met by utilising all of the limited space available in the RS6 engine bay which was heavily restricted by the underside of the hood. Our solution was to completely redesign the entire airbox which maximized volume, increased flow entry openings and created a more favourable filter angle to the turbos. Furthermore we dramatically increased the size of the turbo inlets by as much as 85% when measuring the cross sectional area at the openings. The second objective was met by designing an organically shaped system with a custom rounded panel filter to ensure the airflow path contained no sharp corners and therefore allowed for the flow to remain laminar. With smooth transitions from the filter to the turbo inlets, our intake minimises the formation of turbulence and therefore the turbos are able to operate more efficiently. We partnered with BMC for a bespoke filter element to ensure that the filtration area is as large as possible whilst keeping airflow clean.

With all objectives met, our C8 RS6 intake system delivers on all fronts and allows for the turbos to generate boost more efficiently. This results in an improved throttle response and significant power gains, independently tested which increase with higher states of tune. The performance gains measured are a result of the complete system we have developed from the airbox base to the lid and the inlets.

*Gains measured can vary with different ECU tunes.

EuroCode ÜSS Billet Aluminum Rear End Links B8 / B8.5 / Q5 / C7 / D4 Chassis

EuroCode’s endlinks are the second part of EuroCode’s USS Stabilization system for the B8/B8.5 A4/S4/A5/S5/RS5, 8R Q5/SQ5 and C7 A6/A7/S6/S7/RS7 platforms, and is meant to be paired with our sway bars and Alu Kreuz drivetrain bar to work as a complete suspension system.  

A very common question is whether or not you will feel this upgrade on the street versus the track, and our answer is simple: absolutely.  The stock links are made from rubber which is inferior to our endlink’s billet aluminum construction.  If you just upgrade your swaybars without the links, you put more pressure on the OEM unit and reduce the efficacy of your swaybars. With this product, the weakest link is removed. Our end links will allow you to fine tune your suspension, reduce the flex and fatigue that is prone with the factory rubber end links, and allow for the corner balancing of the suspension.

The body of Eurocode’s ÜSS rear endlink is T6 billet aluminum with a clear type III hard anodize finish, laser engraved with Eurocode’s logo. Eurocode’s ÜSS rear end link contains a pair of replaceable spherical bearings with Teflon coated bearing races.

Lowering the ride height on factory air suspension equipped cars alters the geometry of the control arm and my produce a slight misalignment of the end link.  To rectify this situation, there is an optional fitment kit available. (Sold seperately)

These end links are a motorsport item and do require maintenence. Overtime the bearings will wear and create noise. We offer rebuild kits for both our front endlinks and rear endlinks.

Eurocode highly recommends rubber dust boots to protect and extend the life of the bearings.

EuroCode ÜSS Billet Aluminum Adjustable Front End Links B8 / B8.5 / B9 / Q5 / C7 / D4 Chassis

EuroCode’s endlinks are the second part of EuroCode’s USS Stabilization system for the B8/B8.5 A4/S4/A5/S5/RS5, 8R Q5/SQ5 and C7 A6/A7/S6/S7/RS7 platforms, and is meant to be paired with our sway bars and Alu Kreuz drivetrain bar to work as a complete suspension system.  

A very common question is whether or not you will feel this upgrade on the street versus the track, and our answer is simple: absolutely.  The stock links are made from rubber which is inferior to our endlink’s billet aluminum construction.  If you just upgrade your swaybars without the links, you put more pressure on the OEM unit and reduce the efficacy of your swaybars. With this product, the weakest link is removed. Our end links will allow you to fine tune your suspension, reduce the flex and fatigue that is prone with the factory rubber end links, and allow for the corner balancing of the suspension.

The body of Eurocode’s ÜSS front adjustable end link is T6 billet aluminum with a clear type III hard anodize finish, laser engraved with Eurocode’s logo and features a threaded body to house the heim joints. The heim joints feature both left and right hand threads for ease of adjustability while on the car. Adjustability range is 155mm to 195mm.

These end links are a motorsport item and do require maintenence. Overtime the bearings will wear and create noise. We offer rebuild kits for both our front endlinks and rear endlinks.

Eurocode highly recommends rubber dust boots to protect and extend the life of the bearings.

American made Skid plates for Audi C7 A6/S6/A7/S7/RS7 Cars. The skid plates are Made of 5052  Aluminum. All necessary hardware is included along with complete instruction sheet. Four Rings Auto saw a need for a better solution to the stock plastic skid plate that break or get ripped off if your car is lowered or hit something. This skid plate helps protect against that.

Thickness 0.1155 

***These skid plates are in-stock and drop shipped from manufacturer***

Need customized tune settings beyond what the Dyno Spectrum OTS maps provide?

Rolling anti-lag

Pops and bangs

Exhaust flap and sound tuning

Rev limiter changes

4 Bar map sensor implementation

DS1 port injection, meth injection, nitrous controller implementation 

THIS SERVICE DOES NOT INCREASE POWER OUTPUT.  For more involved custom calibrations to increase performance, you must speak directly with one of our representatives.  

We are now offering our upgraded clutch pack for the DL501 transmission. Stop slipping and put the power down! If you want to hold more torque and have crisper shifts, this upgrade is for you. Accompany it with one of our TCU tunes to maximize compatibility and performance.

Stock rating - 800nm (588 ft/lb)

Level 1 rating - 1000nm (735 ft/lb)

Level 2 rating - 1300nm (955 ft/lb)

The achievable torque may be considerably higher depending on the transmission tune, surface traction, type of driving, mechatronics condition, or fluid, among other factors.

Refundable Core Fee: Your core will be inspected upon receipt for eligibility of a partial or full core refund. We also offer new cores (depending on availability)

Note: Will Require TCU Tuning

Back order 3-4 weeks

• Eliminates Heat Soak and Lowers Intake Air Temperatures (IATs) for Maximum Performance in High-Performance and Race Conditions
  • Stage 1 (Stock Tune) +20 WHP / +18 WTQ*
  • Stage 2 (With High-Performance Tune) +10 WHP / +20 WTQ*
• Formula-1 Performance Grade Core by PWR (2-Row Core Featuring Rolled Tubes w/ Inner Fins)
• CNC Machined Billet End Tanks
• 100% TIG Welded vs. OEM Style Gasket and Crimped End Tanks for Maximum Durability
• OEM Style Inlet/Outlet Connections for Precise Fitment With All OEM Components
• True Plug-and-Play “Drop-in Fit” Installation Requires Absolutely No Modifications
• Made in the USA at PWR North America

Complete Set Fits:

• 2020+ Audi C8 RS6/RS7
• OEM # 4K0 145 805 P (Left) & 4K0 145 806 B (Right)

Upgraded driveshaft carrier bearing support.  The OEM unit is prone to failure often resulting in rear differential failure due to pinion angle change.  Billet aluminum construction and custom polyurethane bushings keep the driveshaft right where it should be.