M7 Lower Diffuser Tunnels Mini - Generation One

Code: DIFU-M7-R53
  • From £605.00
  • (Delivery from £11.00)
  • RRP £650.00
Item in Stock   |   Usually dispatched within 24 hours
  • Increased Down Force for Better Handling
  • Improved Under Car Aero Dynamics
  • Reduction in Drag
  • Expressive Looks

"Race teams install them for the downforce... Show cars use them for that extra punch in character... And now you'll be able to do both!
M7 proudly presents to you the M7 Rear Lower Diffuser Tunnels.

R53 owners rejoice! We know how bad you've wanted them and they're finally ready for you. The Rear Lower Diffuser Tunnels come in a gel-coated fiberglass (Ready for paint) or carbon fiber finish.

Our rear lower diffuser system not only looks aggressive, but it helps your performance jump up another level. The tunnels redirect the high speed air flow under the car to transition smoothly into the low pressure vacuum created at the rear of the car as it moves forward. Smoothening out the air flow under the car helps to reduce drag on the vehicle while also increasing downforce.

The diffuser tunnels attach to your vehicle using special brackets that utilize pre-existing mounting locations as well as the rear bumper. The rear bumper brackets attach by drilling and installing rivnuts into the aluminum bumper. The tunnels were designed around the R56's straight back exhaust system. For the R53, a custom straight-back exhaust will have to be fabricated to clear the tunnels. This means that the battery box will have to be removed and the battery relocated.
The M7 Diffuser Tunnels are available in two finishes: fiberglass and stunning Carbon Fiber. The small center wing between the two large tunnels comes in black anodized aluminum for both finish options.

Please note BEFORE placing order:
- The AirTab vortex generators seen in some images floating around the internet were part of a pre-production prototype and are NOT available on the final production version.
- The center wing under the exhaust tips features a black anodized aluminum finish.
- Shaping of the rear bumper is necessary.
- Drilling and installation of rivnuts into rear aluminum bumper is necessary (hardware is included but tools ARE NOT).
- Due to construction, installation on the R53 requires a custom straight-back exhaust, relocation of the battery, and removal of the battery box. Some of the rear heat shielding will also have to be cut. "

Please note Carbon Fiber option is Special Order only so please contact for delivery details.


Please note: All M7 Products are imported from the US and therefore may be subject to import charges

 At PRS Racing we don't want to charge any more than is necessary for the postage hence we charge by the weight of each product, helping to ensure cost effective shipping prices.
The following prices are based around quotes and can be subject to change. If this is the case PRS Racing reserve the right to contact you with any shipping amendments prior to shipping of your products to ensure 100% customer satisfaction. All prices are INCLUSIVE of VAT.

UK Delivery Services:

Free Delivery is 1st Class Royal mail Signed for if Under 3KG

Special Delivery is Pre 1Pm Royal Mail - if under 3KG


Next day Delivery Is Royal mail business if under - 3KG


Over 5KG DHL/UK mail next day

European Delivery

Delivery is based on weight in both the UK and Europe please allow 3 - 7 working days for delivery

0 - 0.49kg       £4.99
0.5 - 0.99kg    £5.99
1kg - 2.99kg   £6.99
3kg +              £20  (Weight Dependent)

Rest of World Delivery

International orders are worked on Volumetric weight. Please allow 4 - 10 working days for delivery

0 - 0.49kg      £9.99
0.5 - 0.99 kg  £12.99
1kg - 2.99kg  £14.99
3kg +             £25.00 (Weight Dependent)

All Parcels are shipped with a tracking number to ensure you know when to expect your order. If you have supplied us with a contact number or e mail, you can TXT to re arrange the delivery with the Currier at a suitable time and date. Items that are in stock are shipped same day if the order is placed before 2pm.

PRS are committed to keeping a large stock of goods, however we cannot always guarantee that all items will be in stock at time of purchase. If your item is not in stock we will contact you informing you when to expect your item.

PRS cannot be held liable for any reasonable or unavoidable loss or damage suffered as a result of a delay in delivery.

Please Note: As a result of Brexit and the continued changes some orders my be subjected to import Tax and handling Fees. Please check first if you are unsure before placing an order.