BMW S55 EFR Single Turbo Kit (M2C F87, M3 F80, M4 F82

The Latest, Most Unique & Best S55 Single Turbo Kit!

Proven technology, guaranteed fit, race-tested reliability — OEM+ quality components built for enthusiasts.

What Our Kit Includes:

• Twin Scroll Manifold with 1.5″ runners for all 6 cylinders

• BorgWarner EFR (Engineered For Racing) Turbocharger of Choice (8474, 9174, 9280)

• 4-Ply Silicone Hoses

• Stainless Steel 304 TIG-Welded Y Pipe

• V-Band Clamps

• Coolant Aeroquip Hoses

• 14mm Banjo Fittings for coolant feed and return lines

• Charge Air Cooler

• 2.5" to 3" Boost Pipe

• Aluminum 3.5" Turbocharger Inlet

• Stainless Steel Braided AN Oil Feed Lines

• Stainless Steel Oil Feed and Turbo Oil Drain Coupler

• Oil Drain Aeroquip Hose

• Smart Seal Stainless Steel Hose Clamps

• Oetiker and Constant Pressure Hose Clamps

• External Wastegate (EWG) Mounting Kit (Bracket and linkage)

Why Choose BigBoost Turbo Kits?

• In-House Tested: We rigorously test our kits measuring individual cylinder EGTs and back pressure to ensure safe and ideal operating conditions. Our kits maintain a back pressure ratio of 1.11–1.12:1, optimal for smooth and reliable engine performance.

• EFR Turbo Advantage: The BorgWarner EFR turbos deliver simplicity and exceptional performance — no need for external boost controllers or complex vacuum line setups. Thanks to Gamma Ti turbine wheel technology, these turbos spool quickly while providing strong top-end power with an extended compressor wheel design. The EFR Black Series offers an impressive compressor map for serious performance gains.

Please Note:

• Made to order — please allow 4-5 weeks for shipping.