F55/F56 difference between GS6-59BG and GS6-59SG trans

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Nov 15, 2023 | 09:18 AM

johnnys2quick

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difference between GS6-59BG and GS6-59SG trans

Anyone know the difference between a GS6-59BG and a GS6-59SG transmission? I have a 2017 Cooper S and it has the GS6-59SG. Is the difference only the year of manufacture?

regards, JC

Nov 15, 2023 | 10:39 AM

F5666

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Joined: Feb 2023

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From: Florida

Quote:

Originally Posted by johnnys2quick

Anyone know the difference between a GS6-59BG and a GS6-59SG transmission? I have a 2017 Cooper S and it has the GS6-59SG. Is the difference only the year of manufacture?

regards, JC

It is slight differences in gearing ratios

Nov 16, 2023 | 04:52 AM

NBCGLX

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I’ve heard the same, the only differences being gear ratios and final drive.

Nov 16, 2023 | 10:04 AM

johnnys2quick

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would be interesting to find a source for the gear ratios by transmission version.

Nov 16, 2023 | 11:51 AM

F5666

2nd Gear

Joined: Feb 2023

Posts: 148

Likes: 58

From: Florida

Quote:

Originally Posted by johnnys2quick

would be interesting to find a source for the gear ratios by transmission version.

I was considering how to go about this myself b/c I have been wanting to re-gear my transmission based on the mods I have made and plan to make.

Here is all the info I have so far: