Notices
RX-8 Parts For Sale/Wanted Parts for sale, NO Vendor Ads.
Parts Search
Keyword:

Category:

Price:

Private or Vendor Listing:

Location (US State/Canada/Int):

Item Condition:



Cars Search
Keyword:

Year:
(Range)

Price:

Mileage:

Color:

Private or Dealer Listing:

Location (US State/Canada/Int):


{WTB} Mazdaspeed Rear Diffuser

Thread Tools
 
Rate Thread
 
Old Aug 1, 2025 | 01:17 PM
  #1  
Federighi's Avatar
Thread Starter
Registered
iTrader: (7)
 
Joined: Feb 2012
Posts: 937
Likes: 193
From: SF Bay Area
Mazdaspeed Rear Diffuser

Category: Exterior - Body Parts
Price: $12345
Private or Vendor Listing: Private Listing
Part Fits (you may select multiples): Others, Series I, Series II
Location (US State/Canada/Int): CA
Item Condition: Used

Hey 8Club!

Looking for the elusive MS s1 rear bumper diffuser.

Preferably used condition; poor paint, cracks or damage ok as I'm planning to cut it apart for a project. Not really looking to spend too much, just for a funny diy project I'm willing to try. There's a few reasonable aftermarket options available but involves international shipping and I'm hoping to find something stateside.

If you're got something, let me know!

Thanks for looking!
Reply
Old Aug 1, 2025 | 01:32 PM
  #2  
200.mph's Avatar
FULLY SEMI AUTOMATIC
iTrader: (9)
 
Joined: Aug 2008
Posts: 5,937
Likes: 3,364
From: BALLS DEEP
i would look at an aftermarket fiberglass one if you are gonna hack it up. they can be found pretty cheap and you wont be destroying a rare part
@Ricky SE3P might know where to get one with cheap shipping

Last edited by 200.mph; Aug 1, 2025 at 01:39 PM.
Reply
Old Aug 1, 2025 | 04:21 PM
  #3  
Ricky SE3P's Avatar
Project Seca
iTrader: (10)
 
Joined: Dec 2010
Posts: 1,763
Likes: 623
From: SoCal
Nope, no leads here for a rear diffuser. I just picked up a KBD rear instead that wont be the prettiest but works, and from my understanding the KBD rear bumper mold was made using a OEM rear bumper with a mazdaspeed rear diffuser. They simply one-piece molded it and make slits on the rear sides of the wheel arches to give it a slightly different appearance as far as I can tell. Might be worth considering buying one of those as the starting base for the cost and then just cutting that up. Depending on the project you have in mind, it could interest me as well and I can take some measurements or may want to do it too.
Reply
Old Aug 1, 2025 | 05:02 PM
  #4  
Federighi's Avatar
Thread Starter
Registered
iTrader: (7)
 
Joined: Feb 2012
Posts: 937
Likes: 193
From: SF Bay Area
Originally Posted by Ricky SE3P
Nope, no leads here for a rear diffuser. I just picked up a KBD rear instead that wont be the prettiest but works, and from my understanding the KBD rear bumper mold was made using a OEM rear bumper with a mazdaspeed rear diffuser. They simply one-piece molded it and make slits on the rear sides of the wheel arches to give it a slightly different appearance as far as I can tell. Might be worth considering buying one of those as the starting base for the cost and then just cutting that up. Depending on the project you have in mind, it could interest me as well and I can take some measurements or may want to do it too.
Thanks for the info, good to know. My oem rear bumper has the lower portion cut off and my idea is to remove the outer flares from the diffuser and attach them. Mainly looking to recreate something aesthetically similar to how the GT3rs presents its rear end and hopefully provides some function. I've been observing what could potentially be applicable from aero podcasts, blogs and how teams / manufacturer's approach directing messy airflow. With my rear tires completely exposed and spilling out all kinds of chaotic air, some sort of outer curtains "should" help direct more flow out the back. We'll see.

Originally Posted by 200.mph
i would look at an aftermarket fiberglass one if you are gonna hack it up. they can be found pretty cheap and you wont be destroying a rare part
@Ricky SE3P might know where to get one with cheap shipping
I hear you on cutting up niche parts but it kinda goes hand in hand with the modifying aspect of the hobby. So I've come to accept a certain amount of give and take in that respect. Always nice to use oem parts if / when you can, and besides, it'll be going to a good home. haha



Reply
Old Aug 2, 2025 | 01:51 PM
  #5  
Federighi's Avatar
Thread Starter
Registered
iTrader: (7)
 
Joined: Feb 2012
Posts: 937
Likes: 193
From: SF Bay Area
Here's some of what I found available online that might be suitable for oem rear bumper. Really about finding the correct dimensions imo and cutting / modification is part of the process. I'm waiting to hear back on some measurements.




plus the regular stuff off ebay
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Ka Kui
Canada For Sale/Wanted
19
May 29, 2023 09:38 AM
AllDarkGraves
RX-8 Parts For Sale/Wanted
4
Feb 27, 2021 12:23 AM
are_ex_ate
West For Sale/Wanted
3
May 15, 2012 11:22 PM
mscamp02
RX-8 Parts For Sale/Wanted
1
Mar 22, 2011 01:08 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -5. The time now is 03:10 AM.