Differentials for BMW F2X M240i

diffsonline SKU: 621f58235908f

$1,399.00

Differential icon e643525b 5a91 4f54 82f3 c1bc67071173

All differentials are built to order and we are currently running 3-4 weeks out from order date to ship date.

Gears icon d0bf13e5 d225 4041 b8fe 5fd4aee6fdc5

Parts will likely ship on the next business day.

Transmission icon 8a38e78f efed 4538 a0cd 2eca85039731

Please check with us for lead times on transmissions.

Diffsonline builds a wide variety of BMW differentials in house to accommodate the several different differential housings used in modern BMW's. We start by cleaning the differential housing, then select the industry's finest ring and pinion gears, apply the desired clutch packs and options, and finally carefully assemble the housing to be shipped to your door.

The first decision to make when buying a custom differential is to determine the gearing you want. The gear ratio determines the number of revolutions of the wheel for every revolution of the drive shaft. The higher the gear ratio, the more RPM's an engine must turn to keep your speed constant. Take a look at our RPM / MPH chart in Technical Information to see how various ratio's may affect your cars performance.

Once you have selected the desired gear ratio, you must determine to what degree do you want limited slip. Limited slip comes with several options from open to 75% and variable ramp lockups. You also can specify the amount and type of clutch's for the differential.

Lastly, there are some upgrade options that may be selected including ring and pinion polishing for reduced friction / lower temperatures, upgraded rear covers, as well as miscellaneous bolts and fluids.