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Aluminum undertray for Series II?

Old 06-28-2015, 08:12 AM
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ON Aluminum undertray for Series II?

Gents, I have search all over this forum as well as various Mazda aftermarket vendors in search of an aluminum undertray for the Series II (2010 R3 specifically).


Does anyone know if anyone makes an aftermarket aluminum tray for our car?
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Old 06-28-2015, 09:56 AM
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Did you try Mazmart?
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Old 06-28-2015, 08:52 PM
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Originally Posted by nowakm99 View Post
Gents, I have search all over this forum as well as various Mazda aftermarket vendors in search of an aluminum undertray for the Series II (2010 R3 specifically).


Does anyone know if anyone makes an aftermarket aluminum tray for our car?

RX 8 RX8 Mazda Cooling Panel Belly Pan Under Tray Slash Guard JDM wankel Rotary | eBay
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Old 06-28-2015, 09:30 PM
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The undertray is the same on a SI and SII.
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Old 06-29-2015, 05:21 AM
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The S2 OEM aluminium under tray is not the same as Series 1.

S2 one is S2 specific, goes under the larger S2 Oil Pan (Sump), and is held on by 9 bolts, and is ridiculously expensive @ $345.

Mazda Parts - Discount factory (OEM) Mazda parts and accessories at Park Mazda OEM Parts

Oil drain plug location is also in a different position in S2 and drain plug is a recessed hex one.
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Old 06-29-2015, 01:03 PM
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^i think they are talking about the wind diverter tray under the radiator... not the metal sump guard.
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Old 06-29-2015, 04:44 PM
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All the ones that I've seen online specifically state 04-08, so I really doubt that they are the same. Thank you ASH8 for the link!!!
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Old 06-29-2015, 04:46 PM
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They are in fact the same (speaking of the radiator under tray). We have a couple on 09+ RX-8's.
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Old 06-29-2015, 10:31 PM
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Actually NO they are different...

OEM Series 1 black plastic under tray is a different part number as the S1 OEM replacement is S1 Only sold as a 3 piece assembled part, that is the flattish under tray and the two separate sides that are riveted onto the large flat tray @ 90 degrees...
Mazda Parts - Discount factory (OEM) Mazda parts and accessories at Park Mazda OEM Parts

OEM Series 2 black plastic under tray is a different part number as the S2 OEM replacement is S2 Only sold as a 3 piece assembled part, that is the flattish under tray and the two separate sides that are riveted onto the large flat tray @ 90 degrees...
Mazda Parts - Discount factory (OEM) Mazda parts and accessories at Park Mazda OEM Parts

What are the actual differences between "The Series 1 and 2" ?, well not a lot AFAiCT.

Each 3 piece 'belly pan', consists of the large main piece and two upright sides (one each side).
The one main (large) centre piece is identical, the exact same sub part and sub part number (but not sold separately) for Series 1 and Series 2.
The two much smaller black plastic 'side uprights' on each side of all of the flat plastic belly pans are then riveted on at factory, it is these OEM sub Parts which have and use different sub install part numbers (a left and right hand side).
Having not done a side by side (S1 and S2) comparison of these OEM small sided or uprights, I believe the differences could just be related to the OEM wiring harness locations and or holding clip punch holes.

I have a new spare OEM S2 F189-56-110C '3 piece' complete tray here which includes the 'sub' part numbers embossed on each part.
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Old 06-30-2015, 07:15 AM
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here is the LRB Speed on my series 2 the black side pieces just bolt up to the under tray... its really good quality (don't mind my destroyed under car
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Old 06-30-2015, 11:12 AM
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they could have made it into front spliter as well
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Old 06-30-2015, 11:38 AM
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They may be different part numbers but the pans are the same in terms of fitment and mounting. Like I said, we have few on S2's including Hoss-05's 2005 S2 conversion.







And yes, you typically use the stock uprights (just drill out the rivets and use provided hardware) as they rarely get damaged, they are really tough. We are working on uprights though, mainly to accommodate for the turbo piping and such.

My original tray was hand cut and I ran it for years without issue, then we decided to just improve on that design.

Last edited by 9krpmrx8; 06-30-2015 at 12:00 PM.
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Old 06-30-2015, 07:07 PM
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Originally Posted by 9krpmrx8 View Post
They may be different part numbers but the pans are the same in terms of fitment and mounting. Like I said, we have few on S2's including Hoss-05's 2005 S2 conversion.



And yes, you typically use the stock uprights (just drill out the rivets and use provided hardware) as they rarely get damaged, they are really tough. We are working on uprights though, mainly to accommodate for the turbo piping and such.

My original tray was hand cut and I ran it for years without issue, then we decided to just improve on that design.
Yes, it is however not a straight or simple swap as the uprights aluminium rivets have to be drilled out of plastic which until this post it was not stated or recognized.

I don't assume everyone here in forum has the same capabilities, and assume everyone wants to mod their car to the same level as others do particularly from the OP's two line original request.

All good.
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Old 06-30-2015, 07:13 PM
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Originally Posted by nowakm99 View Post
Gents, I have search all over this forum as well as various Mazda aftermarket vendors in search of an aluminum undertray for the Series II (2010 R3 specifically).


Does anyone know if anyone makes an aftermarket aluminum tray for our car?
To clearly answer your question, yes the aluminium tray only will fit (all the same for RX-8's), but,
you (or installer) will have to drill out the 8 alloy rivets (4 each side) through plastic first to remove old plastic tray, then to save and reuse the 2 plastic uprights (one each side).

I might even buy one myself as it is more robust than the plastic OEM.
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Old 06-30-2015, 07:33 PM
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Originally Posted by GripDecision View Post
here is the LRB Speed on my series 2 the black side pieces just bolt up to the under tray... its really good quality (don't mind my destroyed under car
Geez, what did you scrape or hit (can see why you renewed your OE cover), must have been quite a bang.
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Old 07-01-2015, 05:26 AM
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That looks great. Thank you for sharing. This has been added to my shopping list!
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Old 07-02-2015, 12:11 PM
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Does that work better than the factory undertray as far as better airflow somehow? What would be the benefit of that?
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Old 07-02-2015, 01:26 PM
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The only real benefit is strength. I bottomed out at 70MPH with my last one and it was fixed in five minutes with a dead blow hammer. But of course with a bad enough incident you could potentially do a more damage with an aluminum tray than with the OEM one. But I have never seen that with any of the people running aluminum trays.
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Old 07-02-2015, 06:27 PM
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It needs louvers to let the hot engine bay air out ....
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Old 05-13-2016, 10:14 AM
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I know... old post

Originally Posted by TeamRX8 View Post
It needs louvers to let the hot engine bay air out ....
... Nope. This item would be best with the exact opposite of what you are thinking. (purely ''couch engineering'' on my end)

Flat keeps things simple, if anything... added louvers would be reversed to draw even more air from under the car into the engine bay (more air through radiator).
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