This kit replaces the restrictive factory inlets ahead of the S55 twin turbochargers. It opens the inlet to 63mm against the 55mm stock section, a 33 percent larger flow area, and do88 measures 778 CFM at a 75 mbar pressure drop against 690 CFM stock, 13 percent more flow. The rear inlet is a custom aluminum pipe with a welded CNC machined turbo connection radius flange, and the front inlet is a 3D freeform steel wire reinforced silicone hose with a CNC machined radius adapter. Matte black hose clamps are included. This version is for the OEM 41mm turbochargers; do88 lists a separate version for 54mm hybrid turbos.
Specifications
| Type | Turbo inlet pipe kit, for OEM 41mm turbochargers |
| Position | Turbo inlet, front and rear |
| Material | Aluminum pipe with CNC machined flange; steel wire reinforced silicone hose |
| Finish | Black, with matte black hose clamps |
| Size | 63mm inlet diameter against 55mm stock; 778 CFM at 75 mbar |
| Quantity | 1 kit (front and rear inlets, hose clamps) |
| OEM Replacement | 13717846272, 13717846271 |
| Part Number | do88-kit205-S-OEM |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2020 | BMW | M2 Competition (F87) | S55 twin turbo |
| 2015-2018 | BMW | M3 / M3 Competition (F80) | S55 twin turbo |
| 2015-2020 | BMW | M4 / M4 Competition / M4 GTS / M4 CS (F82/F83) | S55 twin turbo |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
