Lightweight rear tubular subframe drag - VAG RS3 S3 A3 TTRS TTS TT Golf Mk5 Mk6 Mk7 Seat Leon

After long CAD development based on 3D scans of the OEM subframe, tests with CAD FEA (finite element method) and practical tests, you can now buy branded subframes for the rear axle of your Audi/VW/SEAT/Skoda vehicles based on the MQB platform with Haldex. A list of vehicles can be found below.

By using the same T45 tubes as in WRC vehicles, our subframes offer increased rigidity and weight reduction. All factory parts are bolted to this unit, no further modifications are required.

This version is intended for vehicles that are looking for the lightest possible rear subframe - dragster vehicles. For vehicles that are used on race tracks (street circuits), we offer the WAS-564 version.

Advantages:

- 12 kg. This is a 6 kg saving compared to the OEM steel MQB subframe and a 6.5 kg saving compared to the OEM steel PQ35 subframe (TT 8J, A3 8P).
- possibility to adjust camber, toe and bump steer.
- Additional drag setup bracket for upper control arm - provides better camber gain and roll center position (requires adjustable control arm to maintain camber setting).
- One subframe mounting position prevents subframe from moving under the vehicle. No subframe locking kit/rear billet aluminum subframe required (weight savings).
- Increases chassis stiffness for improved handling.

Features:

- Better access to the underbody and wishbone replacement without removing the subframe.
- T45 tubes (BS4T45 to BS4T100) imported from the UK and S355 sheet metal.
- All components TIG welded.
- Supplied painted black (powder coated) or any RAL color on special order (50 Euro).
- Can be used with OEM control arms or our adjustable control arms.
- Mounts to the OEM body, no further modifications required to mount the subframe.
- Includes brackets for two OEM xenon rear light sensors.
- Can be used with exhaust systems up to 4 inch. OEM positioning.
- No subframe inserts or our aluminum subframe bushings required as the subframe is permanently attached to the body.

Scope of delivery:

- Rear subframe, powder-coated at the rear.
- Set of adjustable 3 mm metal control arm positioning washers for -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 mm positioning.
- Printed installation instructions

Used in vehicles with PQ35 and MQB platform (type numbers in brackets):

Audi A3/S3/RS3 (8Y 2021) all-wheel drive
Audi A3/S3 (8P & 8V & 8VFL 2012-2021) with Haldex
Audi RS3 (8V & 8FV 2013-2021)
Audi TT/TTS (8J & 8S 2006-2021) with Haldex
Audi TTRS (8J & 8S 2009-2021)
Audi Q2 (2017)
Audi Q3 / RSQ3 (F3 2018)
SEAT León Mk3 (5F) (2006-2013) with Haldex
VW Golf Mk5 Mk6 Mk7 Mk8 (2003) with Haldex (all-wheel drive)

Note: 

Not compatible with Audi RS3 8P and VW Golf R32. The battery is located under the vehicle behind the rear subframe. Our subframe can be used, but the battery compartment must be relocated.

T45 is a unique seamless carbon-based steel tube that is used in many industries. It is stronger than the Co-Mo 4130 tube also used in motorsport. It is often used in the aerospace industry for equipment such as pilot and crew seats as it can withstand high G-forces without breaking or splintering. The material is carbon-manganese based and meets the full aerospace specifications of British Standards.

Properties:

Tensile strength: 700-900 MPa,
0.2 % yield strength: at least 620 MPa
Hardness test: 201 min. - 262 max. HB or 210 min. - 275 max. HV.

Replaced:

- 5Q0505235E
- 5Q0505235J

Note: 

Only available for off-road, racetrack and racing applications. The installation of the subframe can lead to increased noise, vibration and harshness (NVH) in the vehicle. Our tests on the standard VW Golf 7R showed a minimal increase in NVH values at idle. We strongly recommend having the subframe fitted by a qualified and experienced workshop.