2005 Lotus Elise
"I got my Railer yesterday, it installed like the stock dif and had it on in about 10 mins. I have my Ohlin's set fairly soft due to the back roads that I run on. I can feel the car being sucked down at around 90 mph. I normally only go to 120+ on nice roads, but I thought I would try it and got up to 129 on a bouncey back road with complete confidence compared to without it." - Darrin, Piqua OH.

2010 Lotus Evora
"So wrecking the car ended up being not too bad of a deal afterall. Glenn from Difflow offered fabricate a new one for me and look what he came up with!! I still have to replace the diffuser finisher, but wow it looks awesome! The build quality is top notch and the whole thing is very light. I don't have a good "before" pic for comparison, but this looks just right for the Evora! Maybe if I would have had this in the car prior to my accident the added downforce would have kept me on the pavement " - Todd, Wexford PA.

2006 Lotus Exige Cup 255
"Just mounted my railer 5 element diffuser to my cup car today. It looks great and the fit was perfect. The overall diffuser is much stiffer and more stable when mounted. Ran the diffuser at the track this weekend and really liked it. It seemed to improve high speed stability and made the car feel more hunkered down. It certainly drew a lot of comments." - Ed, Newark DE

View: Lotus Elise/Exige/Evora | Acura NSX | Nissan GTR

Frequently Asked Questions

1) What is a diffuser and how does a Difflow diffuser work?
Check out our video demonstration to see how our diffusers work.

2) Will a Difflow diffuser fit on my NSX?
We carry diffusers that fit on these car models:

1991 Acura NSX
1992 Acura NSX
1993 Acura NSX
1994 Acura NSX
1995 Acura NSX
1996 Acura NSX
1997 Acura NSX
1998 Acura NSX
1999 Acura NSX
2001Acura NSX
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2002 Acura NSX
2003 Acura NSX
2004 Acura NSX
2005 Acura NSX

Our diffusers will also fit any 1991-2001 Acura NSX with the updated 2002+ rear valance.


3) What diffuser is right for me?
It all depends on what you want your car to look like and how you want it to perform. If you are a casual driver that doesn't track or race your car, then we would recommend the Original diffuser because the rounded fins are more street friendly. If you track your car or don't plan on going on any steep grades, then you should get the Railer. It's longer fins will provide better air channeling.

4) Will the diffuser scrape on the ground over bumps/hills?
Here are the clearance measurements for our diffusers on stock suspension. (aprox).

1991-2005 Acura NSX
5 Element Original - 4 (aprox) inches off the ground, parallel to the ground.
5 Element Railer - 4 (aprox) inches off the ground, parallel to the ground.

*Different suspension, tire pressure and ground surfaces will change the measurements slightly.

If the front end of your NSX clears an incline, then the back end will clear it too. Our diffusers are very durable and can handle bad curb rash and hard hits. Be cautious and take inclines at angles. Due to the nature of the NSX, you will be more prone to scrape the diffuser because the car sits so low naturally.

5) How difficult is it to install the diffuser?
Check out our installation video to learn how to install a Difflow diffuser.

It's very simple installing our diffusers on your car. Simply hook the front of the diffuser to your frame bar located in between the 2 rear wheels of your NSX. At the same time, hook the rear of our diffuser brackets to the rear valance of your NSX. Tighten down the rear brackets to the valance. Then you can attach the bracket to the upperside of the front of your diffuser to the frame bar. The whole process takes about 30 minutes. Remember to use ramps or jackstands for safety as seen in our video.

6) Do you provide instructions and hardware to install the diffuser?
Yes. Instructions are included. Hardware is also included: 5 Brackets, multiple screws and clips, allen wrench and the diffuser. We highly recommend that you watch the installation video.

Acura NSX Difflow Diffuser Installation Instructions (PDF) (Video)


7) How long does it take to receive my diffuser after I order it?
After we receive payment, we ship our diffusers within 48 hours. If we are out of stock, you will be notified and given a time frame for when your diffuser will be complete. It generally takes 2 weeks for a diffuser to be completed. All diffusers are shipped Fedex Ground. If you need the diffuser faster, let us know and we can arrange to ship the diffuser by Air.

If you have any more questions, please contact us and ask.