S58 Turbo Conversion Kit - Rvng BTK TurnKey Single Turbo

RVNG BTK TurnKey Single Turbo Conversion Kit — BMW S58

Everything needed to convert your BMW S58 from twin-turbo to a single-turbo monster, in one complete box. No piecing parts together and no hidden add-ons — the BTK TurnKey kit ships with every hot-side component, line, fitting, gasket, and fastener required for the build.

Power Potential

Built around a true twin-scroll T4 divided manifold in Schedule 10 stainless with 1.25" runners — rated to support up to 1300–1400 WHP — paired with a 12mm billet stainless head flange that is precision-surfaced for a leak-free seal under hard heat cycling.

What's in the Kit

Core hot side

• Turbosmart C-frame single turbocharger, spec'd for the BTK system
• Dual Turbosmart Gen 5 45mm external wastegates
• True twin-scroll T4 divided manifold, 1.25" runners
• 3.5" stainless downpipe with V-band connection and dual dump tubes
• Turbo gaskets, trimmed studs, and high-temp hardware

Charge piping & intake

• Full intercooler piping with three welded sensor ports
• Billet throttle-body adapter
• 3" reinforced silicone couplers with T-bolt clamps
• MAP sensor and radiator bracket hardware

Oil & coolant

• Braided stainless oil feed and return lines with swivel, 45° and 90° fittings
• Billet feed and drain block fittings that reuse OEM bolts and O-rings
• Unused-port block-offs and dual turbo drain fittings
• CNC coolant-overflow relocation bracket with pre-formed hoses and clamps

Wiring & finishing

• Plug-and-play wiring harness — no splicing
• PNP coolant expansion-tank wiring
• Carbon-fiber turbo blanket and fuel-line heat shield
• Billet 6061 catch can with AN fittings
• High-temp silicone vacuum line and heat-sleeve kits

Fitment

• G80 BMW M3 / M3 Competition (S58)
• G82 BMW M4 / M4 Competition (S58)
• G87 BMW M2 (S58)
• F97 BMW X3M / X3M Competition
• F98 BMW X4M / X4M Competition

Good to Know

• Lead time is 1–14 business days depending on stock.
• Optional ceramic coating covers hot parts only; welds are not taped off unless requested (additional cost).
• Want a turbo other than the Turbosmart C-frame, such as a Precision unit? Contact us for a 3" outlet-to-downpipe option.
• Professional installation and custom tuning are strongly recommended.

Emissions & compliance: This kit is designed for off-road, race, and competition use only and may not comply with state or federal emissions regulations for on-road use. It is the buyer's responsibility to confirm compliance with all local, state, and federal laws before installation or use.

Questions or build help? Email support@korespeed.com — KORE SPEED is Canadian-owned and here to get your S58 dialed in.