Drexler Motorsport manufacturers a range of final drive differential gears with ratios suitable for competition use.
Applications currently catered for include:

BMW
- 168 series differential: Ratios between 3.64:1 – 5.8:1
- 188 series differential: Ratios between 2.56:1 – 5.4:1
- 210 series differential: Ratios between 3.25:1 – 5.44:1

Ferrari
- 430
4.0:1 ratio

Mercedes Benz
- DC SL500
4.08:1 ratio

Subaru
- Imprezza WRX
- Front diff 3.45:1 ratio

Custom final drive ratio sets can be made to order, a minimum of 10 units is required for manufacture.