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OVERVIEW
Our Rear Diffuser for the MK6 Golf GTI reduces lift, reduces drag, and improves the cosmetics of the vehicle. By using CFD, we were able to improve the performance of the diffuser while keeping it in a specific build volume for daily and track use.
We utilized 3D scan data during the development to produce an almost OEM like fit and finish for the rear diffuser.
There are no holes/drilling/permanent modifications required for the install and once installed it is very rigid.
The diffuser is made from aluminum, allowing it to take quite a beating and still retain its functionality and shape.
WHAT IS INCLUDED
- Rear Diffuser
- Outside Strake (2)
- Bracket (6)
- Hardware Kit, Includes All Hardware Necessary for Install
DOCUMENTATION
FEATURES
- Powder Coated Matte Black
- Organic Trailing-Edge Shape Which Improves Function
- Flat Head Riveted Strakes (No Rivet Heads Visible, Flat Bottom)
- Simple Bolt-On Installation, No Cutting Required
- Reduces Drag
- Significantly Reduces Lift
SPECIFICATIONS
- CNC Laser Cut and CNC Bent 5052 Aluminum
- Durable Black Powder Coat
- Stainless Hardware Throughout
- All Brackets/Hardware Included for a Full Install
SCIENCE
The goal of the diffuser is to improve grip and reduce drag. Hatchbacks are notoriously drag prone due to the overall body shape. A properly designed rear diffuser improves the wake region and thus improves drag on these style of cars. The other benefit is increased downforce at high speeds; which increases handling, improves safety, and increases corner speeds.
Pair the rear diffuser with our dive plane kit for a nice bump in downforce, no major change in drag, and an aerodynamically balanced package.
HPA branded products carry a one year warranty against manufacturer's defects on all major, non-consumable, components. Damaged caused by incorrect installation, wear and tear, abuse, misuse, racing, collision, foreign particles, etc., will NOT be covered by warranty.
Warranty is offered to original purchaser only and is not transferable.
HPA Motorsports will not be liable for incidental, consequential, indirect, special, or punitive damages of any kind. HPA’s entire liability shall be limited to replacement or repair of the damaged parts at HPA’s option.
Labour and freight costs associated with warranty repair or replacement are NOT covered.
To maintain validity of warranty, factory recommended maintenance schedule and manufacturer’s Technical Service Bulletins (TSB’s) must be adhered to and documented.
In addition to the above, the HPA FT/FTX series Turbo packages for VR6 motors have the following conditions:
Components covered by warranty include:
- Turbochargers
- Exhaust Manifold
- Downpipe
- Catalysts
- Exhaust System
- Intake Manifold
- Silicone Plumbing
- Intercoolers
- Fuel Pump
- Fuel Injectors
- Brake Calipers
- Haldex Controller
Components NOT covered by warranty include:
- Clutch
- Gearbox
- Brake Pads & Brake Rotors
Any claims of defect in workmanship must be repaired at HPA Motorsports' facility located in Langley, Canada. Should the damage be determined to be a direct result of the workmanship of HPA Motorsports, labor costs for HPA Motorsports to complete repairs at our own facility will be included in the warranty repair. In certain circumstances, at the sole discretion of HPA Motorsports, permission may be granted for repairs to be completed at an HPA authorized facility at a pre-approved labor rate.
HPA Motorsports will not be liable for incidental, consequential, indirect, special, or punitive damages of any kind. HPA’s entire liability shall be limited to replacement or repair of the damaged parts at HPA’s option.
To maintain validity of warranty, in addition to the factory recommended maintenance schedule, the following services must be adhered to and documented according to the prescribed schedule:
| Break In period: engine speed is not to exceed 5500 RPM, and absolutely NO standing starts are to be performed | 1000 km / 620 miles |
| Mass Air Flow meter – Clean | 5000 km / 3100 miles |
| Mass Air Flow meter – Replace | 20,000 km / 12,500 miles |
| Engine Oil (Motul Xcess / 8100 5w40) & Filter – Replace | 5000 km / 3100 miles |
| Haldex Fluid & Filter – Replace | 10,000 km / 6000 miles |
Any claims of defect in workmanship must be repaired at HPA Motorsports' facility located in Langley, BC Canada. Should the damage be determined to be a direct result of the workmanship of HPA Motorsports, labor costs for HPA Motorsports to complete repairs at our own facility will be included in the warranty repair.
For remote customers, in certain circumstances, at the sole discretion of HPA Motorsports, permission may be granted for repairs to be completed at an HPA authorized facility at a pre-approved labor rate.
Should you experience any issues with your items, please contact HPA Motorsports for technical assistance using the form below or by calling 604-888-7274 prior to engaging in any repair procedure. Failure to follow the advice of our technical support staff may cause undue harm that will not be covered by warranty.