Gen 1 Rolling Suspension changes

[DaveA]

Did I miss something? What part of the warranty is as short as 3 years / 36k miles?

Just the 12v batteries.

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[SL55]

@Riviot was kind enough to look up all the suspension related parts #s in the Rivian system, so now we have a definitive list of what changed and when:

Front Dampers

2022 R1S Launch Edition (vin 02xxx)

Right: C200055320-A
Left: C200055318-A

(These are unconfirmed #s, the Rivian parts system combines the front dampers with the front air springs even though they have separate #s and manufacturers. We’ll need a visual confirmation from someone with an LE as to what the part is on the front dampers.)

2023 R1S Quad (vin 18XXX)

Right: C200055320-A
Left: C200055318-A

2024 R1S Quad (vin 31xxx)

Right: PT00055320-C
Left: PT00055318-C

2025 R1S Tri

Right: PT00055320-E
Left: PT00055318-E


Front Air Springs

2022 R1S Launch Edition (vin 02xxx)

Right: C100055319-B
Left: C100055317-B

2023 R1S Quad (vin 18XXX)

Right: C100055319-B
Left: C100055317-B

2024 R1S Quad (vin 31xxx)

Right: PT00055319-D
Left: PT00055317-D

2025 R1S Tri

Don’t have front Air Spring #s for an early
2025, if someone with a Gen 2 could provide the #s that would be great!

2025 Current Gen 2 R1S

Rivian appears to have changed their naming scheme in late 2024. Current front air springs appear to be (unconfirmed):

Right: PT00614437-C
Left: PT00614436-C

Rear Dampers

2022 R1S Launch Edition (vin 02xxx)

Right: C200055239-C
Left: C200055237-C

2023 R1S Quad (vin 18XXX)

Right: C20005539-D
Left: C200055237-D

2024 R1S Quad (vin 31xxx)

Right: PT00055239-E
Left: PT00055237-E

2025 R1S Dual (vin 54xxx)

Right: PT00055239-H
Left: PT00055237-H

Current Gen 2 R1S

Right: PT01123376-A
Left: PT01123375-A

Rear Air Springs

2022 R1S Launch Edition (vin 02xxx)

C100001909-J

2023 R1S Quad (vin 18XXX)

C100001909-J

2024 R1S Quad (vin 31xxx)

PT00001909-K

2025 R1S Dual (vin 54xxx)

C100964202-A

Current Gen2 R1S

PT00384162-E

or

PT00384162-F

The part numbers for R1T were different, so ignore references earlier in the thread to the LE R1S numbers possibly being #s like C10002754-G as those are exclusive to R1T.

Reviewing all this data, it provides pretty strong evidence that Rivian was improving the suspension of the Gen 1 vehicles long before the Gen 2s began production. Luke, the head of vehicle dynamics at Rivian, said the main hardware change in Gen 2 was a redesign of the rear dampers. If you look above, that was precisely the first thing that changed from the 2022 LE to my 2023 Quad (C200055239-C to C200055239-D.) The front dampers may have also changed too but I won’t know for sure until I can confirm what part # was in the original 2022 LE.

While there was a change in part #, I can’t say at all if there’s actually any meaningful difference between damper C200055239-C and C200055239-D. My evidence is purely anecdotal in that ride of my 2023 Quad always seemed just fine, and when I demo’d a 2025 Dual it felt nearly identical. So perhaps there was a very meaningful change in revision D and they just continued to refine that in revision E which is on the 2024s and revision H which is on the Gen 2. Or, maybe the real change didn’t happen till revision H, I can’t say for sure other than when driving Gen 1 vs Gen 2 I don’t really notice much.

There was a supplier change for the air springs from Dunlop (which is what most of the Gen 1s have) to Firestone (might be in 2024s but not sure) It had something to do with Dunlop getting bought out by a Chinese company, probably no real performance difference.

It’s worth noting that all of the suspension (both rear and back dampers/air springs) were updated on the 2024 Quad and again for 2025 Gen 2. I don’t know what changed but there are newer part #s for those builds. Luke also mentioned the bearings and other rubber parts were updated to dampen vibrations, not sure when the changes were made. My 2023 also has the same knuckles and cast subframe as the Gen 2s. That probably doesn’t effect ride quality that much but helps with noisy clunks. And finally, there were significant software changes to the suspension which may have made the biggest difference in ride quality.

Just got front dampers and lines replaced on my 2023 Quad.
DAMPER MODULE ASSY - R1S; FRT LH Part# PT00614436-C1


DAMPER MODULE ASSY - R1S; FRT RH Part# PT00614437-C1





JOUNCE SUBASSEMBLY - FR R Part# PT01135762-A1


JOUNCE SUBASSEMBLY - FR L Part# PT01135763-A

I hope they are gen 2 parts. Ride is definitely better - less harsh and more precise steering. Not placebo effect.

 

[meshugy]

I had the exact same damper replacement done on my 2023 R1S. PT00614436-C1/PT00614437-C1 are Rivian’s parts #s for the combination damper/air spring assembly.

if you actually look at the part numbers on the components you’ll see:

Dampers:


Right: PT00055320-C
Left: PT00055318-C

Air Springs:


Right: PT00055319-D
Left: PT00055317-D


These are 2024 Gen 1 parts, likely the last versions before Gen 2. Actual Gen 2 dampers are not backwards compatible with Gen 1.

 

[Jonger1150]

I had the exact same damper replacement done on my 2023 R1S. PT00614436-C1/PT00614437-C1 are Rivian’s parts #s for the combination damper/air spring assembly.

if you actually look at the part numbers on the components you’ll see:

Dampers:


Right: PT00055320-C
Left: PT00055318-C

Air Springs:


Right: PT00055319-D
Left: PT00055317-D


These are 2024 Gen 1 parts, likely the last versions before Gen 2. Actual Gen 2 dampers are not backwards compatible with Gen 1.

So Gen 2 gets Firestone while Gen 1 gets Monroe?

I have a Dual 2024 with Monroe and they do clunk. Was always hoping to replace these with Firestone. Bummer.

 

[meshugy]

So Gen 2 gets Firestone while Gen 1 gets Monroe?

these replacement parts all have Firestone air springs. The originals were Dunlop. I believe the dampers are still Monroe on everything.

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