The Garrett® G-Series earned its reputation — but it also earned its price tag. If your build is plumbed for a G30 or G35 and you're shopping for more power, less money, or both, the True North Turbos TNTSF series was engineered for exactly that gap: direct bolt-on replacements that share the G30/G35 footprint, out-rate their counterparts, and are machined, assembled, and balanced in Canada. Here's the honest spec-for-spec breakdown.

The Lineups at a Glance

TNTSF	Rated power	Garrett counterpart	Its rating	Shared wheel size
TNTSF54 — from $2,099 CAD	615+WHP (720+ HP)	G30-660	660 hp	54mm (2.13") inducer
TNTSF58 — from $2,199 CAD	745WHP (870 HP)	G30-770	770 hp	58mm (2.28") inducer
TNTSF62 — from $2,299 CAD	800WHP (935 HP)	G30-900 / G35-900	900 hp	62mm (2.44") inducer
TNTSF68 — from $2,410 CAD	950WHP (1,110 HP)	G35-1050	1,050 hp	68mm (2.68") inducer

TNTSF turbos are rated in wheel horsepower; Garrett rates in crank horsepower. We convert at WHP × 1.17 so the columns compare fairly. Every TNTSF out-rates its Garrett counterpart, and both lineups are fully ball bearing, water-cooled, and oil-lubricated.

TNTSF58 vs G30-770

Both run a 58mm compressor inducer, and both target the street/strip sweet spot. The TNTSF58 flows 78 lbs/min and rates 745WHP — roughly 870 hp at the crank, a full 100 hp above the G30-770's 770 hp figure — while typically saving you $700+ against G30-770 street prices around $2,600 USD. It's also offered with either the 60x55mm G30-size turbine or the 68x62mm G35-size turbine, a choice Garrett splits across two different product families.

TNTSF62 vs G30-900 / G35-900

All three share the 62mm inducer, but the TNTSF62 carries a larger 82mm (3.23") exducer — 91 lbs/min of flow and an 800WHP rating, roughly 935 hp at the crank versus Garrett's 900. Stainless construction, both turbine wheel options, and a price from $2,299 CAD versus roughly $2,700–3,000 USD for the Garrett units.

TNTSF68 vs G35-1050

The flagship matchup: 68mm compressor over the full 68x62mm G35-size turbine on both sides. The TNTSF68 rates 950WHP — about 1,110 hp at the crank, clearing the G35-1050's 1,050 hp rating — from $2,410 CAD, where the G35-1050 commonly retails between $2,400 and $3,300 USD.

TNTSF54 vs G30-660

Same 54mm inducer, same mission: maximum response. The TNTSF54 flows 69 lbs/min with proven 615+WHP (720+ hp) on EJ25 builds — above the G30-660's 660 hp rating — and it's the quickest-spooling unit in the TNTSF lineup, from $2,099 CAD.

What You Actually Give Up

The badge. That's the honest answer. TNTSF turbos are not Garrett products — they're independently engineered by True North Turbos, a Black Sheep Industries brand. What you keep: ball bearing response, drop-in fitment, familiar housing options (T3 0.83 A/R or dual V-band 0.61–1.21 A/R), Canadian warranty coverage, and direct-from-brand support. What you gain: higher rated output and several hundred to over a thousand dollars back in your build budget — with US customs and duties covered.

Full fitment details, sizing guidance, and the complete comparison live in the TNTSF Turbo Guide, or jump straight to the TNTSF collection. Unsure on sizing? Hit the Turbo Spec Form.

FAQ

Is there a cheaper alternative to the Garrett G30/G35 that isn't a low-quality clone?

Yes. The TNTSF series is designed, machined, assembled, and balanced in Canada by Black Sheep Industries and priced from $2,099–$2,610 CAD — well under typical G-Series retail, without being a resold offshore import.

Will a TNTSF bolt into my existing G30/G35 setup?

Yes — same footprint, mounting points, and housing options. No custom fabrication required.

Which TNTSF replaces my Garrett?

Match the compressor inducer: 54mm → TNTSF54, 58mm → TNTSF58, 62mm → TNTSF62, 68mm → TNTSF68.

True North Turbos TNTSF turbochargers are not manufactured by, affiliated with, or endorsed by Garrett Motion Inc. "Garrett", "G30", and "G35" are referenced solely to identify fitment compatibility. Prices referenced are approximate and subject to change.