$595.00 USD
$595.00 USD




Full Kit Overview - BUILT TO ORDER
Kies Motorsports is proud to offer the DOCRace G-Series S58 Single Turbo Kit — developed in collaboration with Precision Turbo and Turbosmart, and purpose-built for the BMW M3, M4, and M2 platforms carrying the S58 engine. This is not a bolt-on turbo swap — it is an engineered system built to the same standards you'd expect from a factory-level integration.
The kit begins with an in-house hand-fabricated turbo manifold featuring substantial 1.90" OD runners — a design capable of facilitating over 1,500hp of exhaust flow. Paired with Precision Turbo's Next Gen 6466 ball bearing turbo, this setup effortlessly achieves 900whp while maintaining a spool characteristic comparable to the stock twin-turbo setup. That's not a claim many single turbo kits can make.
Turbosmart provides the dual 45mm Gen V wastegates included in the kit — premium, race-proven hardware that gives you precise boost control across the entire RPM range.
Where other kits cut corners on charge pipe routing, DOCRace fabricates 3" aluminum charge pipes with a welded, engine-mounted bracket. The S58 motor requires routing a charge pipe directly in front of the engine balancer — without a secure mounting point, that pipe can contact the balancer over time and cause catastrophic damage. DOCRace solved this the right way: a bracket that bolts directly to the engine, exactly like a factory component.
The oil drain line is a pre-assembled aluminum hard line — no rubber hoses to cut, no fittings to assemble incorrectly. Incorrect cutting can cause the line to melt. DOCRace eliminates that risk entirely. All CNC fittings (oil drain, drain block-off, oil feed, oil feed block-off, and PCV) are fitted with fresh o-rings — no reusing worn factory seals.
A stainless steel heat shield is included to protect the OEM fuel line and valve cover from the substantial heat generated by the single turbo system. This is a detail other kits skip — DOCRace doesn't.
The complete kit includes a printed installation manual to guide you through the process from start to finish. The Kies Motorsports team is also available for installation support, tuning consultation (BM3 / MHD flex fuel compatible), and dyno verification at our Hammonton, NJ facility.
Manifold Runner Size Options
Choose the runner diameter that fits your power goals.
Complete Kit
Everything you need for a complete single turbo conversion — no sourcing additional components.
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.