Ford Performance not offering the 4.09 gears for the 2024. Why?

[Dave2013M3]

They offer the other ratios and they are the same part # for the S550. Anyone? Richmond makes a set, but just wondering.

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[RBGT]

You can't even pick other ratios.

Its either PP or non PP.

Thats 3.73 or 3.55 for manuals.

3.55 or 3.15 auto.

 

[Dave2013M3]

You can't even pick other ratios.

Its either PP or non PP.

Thats 3.73 or 3.55 for manuals.

3.55 or 3.15 auto.

Ford Performance catalog, not OEM.

 

[Zig]

Ford Performance catalog, not OEM.

https://performanceparts.ford.com/part/M-4204-MT

but not much else listed on the website.

 

[RBGT]

I'm looking into 4.09 myself.

Will that void the drivetrain warranty if say the gearbox fails?

 

[Dave2013M3]

https://performanceparts.ford.com/part/M-4204-MT

but not much else listed on the website.

That's a differential w/o the R&P

 

[Dave2013M3]

I'm looking into 4.09 myself.

Will that void the drivetrain warranty if say the gearbox fails?

I don't believe so. I have 4.09 gears on my 2020 and if you have the D4 tranny it's a must

 

[LETHAL]

I'm looking into 4.09 myself.

Will that void the drivetrain warranty if say the gearbox fails?

Yes..For the rear diff at least.

 

[Zig]

That's a differential w/o the R&P

Right. Just 43 parts listed for ‘24 so far.

 

[RBGT]

I don't believe so. I have 4.09 gears on my 2020 and if you have the D4 tranny it's a must

I read some folks say 4.09 is too short?

Do you feel its a lot more aggressive to accelerate?

Mine is the 6sp D4 with 3.55 (non-PP).

 

[Dave2013M3]

I read some folks say 4.09 is too short?

Do you feel its a lot more aggressive to accelerate?

Mine is the 6sp D4 with 3.55 (non-PP).

Not at all. The car should have came this way.

 

[ThreePedalPlow]

Not at all. The car should have came this way.

Does the 4.09 help quite a bit with the "low end feel" when you are just putting around town? My car has the getrag manual transmission and the 3.55 rear gear right now. I'm pretty happy with the way it is but I'm slightly interested in ways to improve the low end torque a little bit. Wondering if lighter wheels, carbon fiber driveshaft or anything else might help with that as well.

 

[RBGT]

Does the 4.09 help quite a bit with the "low end feel" when you are just putting around town? My car has the getrag manual transmission and the 3.55 rear gear right now. I'm pretty happy with the way it is but I'm slightly interested in ways to improve the low end torque a little bit. Wondering if lighter wheels, carbon fiber driveshaft or anything else might help with that as well.

Carbon driveshaft will have very little effect I would say.

The only thing that would make a difference (besides rear axle, overall weight, power) would be a smaller diameter weight.

Stock is 27inch, 26.5 of 26inch wheels would increase the effective torq.

 

[RBGT]

Some gear ratios with different wheel sizes.

 

[Dave2013M3]

Does the 4.09 help quite a bit with the "low end feel" when you are just putting around town? My car has the getrag manual transmission and the 3.55 rear gear right now. I'm pretty happy with the way it is but I'm slightly interested in ways to improve the low end torque a little bit. Wondering if lighter wheels, carbon fiber driveshaft or anything else might help with that as well.

The car feels much more lively. The gears along with other items that reduce rotational mass are just going to be force multipliers. My car has lighter wheels and tires even though they are more wide and aggressive. The 4.09 gears help tremendously off the line. My car had 3.73s and I feel this is the best performance mod I did on the car. My mods on my 2020 Mustang GT are in my sig.

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