The TNTSF54 is a direct bolt-on replacement for the Garrett® G30 and G35 series — a fully ball bearing, water-cooled, oil-lubricated small-frame turbo running a 54mm (2.13") compressor inducer over the 60x55mm G30-size turbine wheel. It's the quickest-spooling turbo in the TNTSF lineup, flowing 69 lbs/min and rated to 720+ crank horsepower. That out-rates the 54mm G30-660's 660 HP figure, at hundreds of dollars less than the Garrett equivalent. Proven Across Platforms Subaru WRX/STI (EJ25): a proven platform for the TNTSF54 — AWD thrill with real punch. Mitsubishi Lancer Evolution (4G63): The TNTSF54 sends the 4G63 confidently beyond 500 horsepower. Toyota 2JZ: Balanced flow, perfect for 2JZ builds in the 400–500+ horsepower range. BMW N54/N55: Smooth TNTSF54 airflow lets these inline-6 engines reach 450+ horsepower. Ford Coyote 5.0 V8: Twin TNTSF54s can push this V8 beyond 1000 horsepower. Chevrolet LS/LT V8 (4.8L–6.2L): Twin TNTSF54s deliver 850 to 1000 horsepower. Drop-In G30/G35 Fitment If your manifold, downpipe, and lines are set up for a G30 or G35, the TNTSF54 bolts straight in — no custom fabrication. Choose a T3 0.83 A/R turbine housing or dual V-band in 0.61, 0.83, 1.01, or 1.21 A/R, the same fitment options G-Series builders already plumb for. The TNTSF54 is an independent True North Turbos unit, not a Garrett product — it simply shares the footprint, and out-values it. Key Specs 54mm (2.13") compressor inducer, 60x55mm turbine wheel 69 lbs/min flow rating — rated to 720+ HP (crank) Fully ball bearing, water-cooled, oil-lubricated Direct bolt-on replacement for Garrett® G30/G35 fitment Turbine housing options: T3 0.83 A/R or dual V-band 0.61 / 0.83 / 1.01 / 1.21 A/R Designed, machined, assembled, and balanced in Canada by Black Sheep Industries Frequently Asked Questions What is the TNTSF54 rated for? 720+ crank horsepower, with a 69 lbs/min flow rating. EJ25 (Subaru WRX/STI) is among the proven platforms, with per-platform results ranging from 400+ hp on a single turbo up to 1000+ hp on twin-turbo V8 applications. Is the TNTSF54 a direct drop-in for the Garrett G30/G35? Yes. It's a direct bolt-on replacement within the G30/G35 footprint — fully ball bearing, water-cooled, and oil-lubricated — installing without custom fabrication. How does the TNTSF54 compare to the G30-660? Both run a 54mm compressor inducer over a 60x55mm turbine. The TNTSF54 is rated to 720+ HP at the crank — above the G30-660's 660 HP crank rating — at a significantly lower price, and it's built and balanced in Canada. Is the TNTSF54 a Garrett turbo? No. It's designed and manufactured by True North Turbos, a Black Sheep Industries brand. "G30/G35 fitment" refers to compatibility only. Power ratings on this page are quoted in crank horsepower (HP). Figures previously published in wheel horsepower (WHP) have been restated using our in-house tested conversion — the hardware and its capability are unchanged. Not manufactured by, affiliated with, or endorsed by Garrett Motion Inc. "Garrett", "G30", and "G35" are referenced solely to identify fitment compatibility. { "@context": "https://schema.org", "@graph": [ { "@type": "Product", "@id": "https://blacksheepindustries.ca/products/tntsf54#product", "name": "TNTSF54 Ball Bearing Drop-In Turbo (G30/G35 Fitment) | 720+HP", "image": ["https://cdn.shopify.com/s/files/1/0090/2345/5290/files/ChatGPTImageJun4_2026at09_14_25PM.png?v=1780622122"], "description": "TNTSF54 ball bearing, water-cooled, oil-lubricated turbo. 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