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      03-06-2024, 11:28 AM   #341
HP Autosport
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Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com

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Quote:
Originally Posted by MR RIZK View Post
What has changed between the BMU MR41 and the BMS MR40S1? The S1 seems to be the latest part number now.

From the eu site it appears that the BMS-MR40 comes with a 16kg rear spring and is the dedicated part for the M2. Has this been discontinued?

The BMS-MR40S1 comes with a 19kg rear spring and is a compatible part for the M2/M3/M4. Has the valving changed as well again?

Seems like every 6 months they change the part numbers for this platform. If you can provide some insight what has changed overtime that would be awesome, also maybe add a matrix to the first post of the differences would help other potential buyers.
The most current kit is BMS MR40S1 with 9 and 19kg springs in the US. Other regions might have different kits with different part numbers, so we can not comment on the differences.

If a component/valving/spring is changed, the kit gets a new part number. What changed, exactly over time? We no longer have that information, but we might have posted something about it when the changes were made. You will have to do some research. Your local Ohlins Australia or Ohlins Sweden should have the answers you seek.
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