SMGspeed

09/03/2026

Shopping for wheels? “18-inch” doesn't tell the whole story.

Check width, offset/backspacing, bolt pattern, center bore, tire diameter and load requirements before choosing your next package. Our latest SMG guide walks through the essentials.

https://smgspeed.com/blogs/news/sema-wheel-tire-suspension-market-performance-fitment-guide

09/01/2026

🔥 $485 FORGESTAR WHEEL — NOW $149

One Forgestar CF5 19x9.5 +29 satin-black wheel for listed 2005–2026 Mustang front applications. Save $336 / 69%.

This is one wheel only with localized cosmetic rash on the outside lip. Review all actual-condition photos, verify fitment, and inspect before tire mounting. Final sale.

Get it before it’s gone: https://smgspeed.com/products/open-box-deal-forgestar-cf5-19x9-5-29-satin-black-wheel-for-2005-2026-mustang-f21299565p29?utm_source=social&utm_medium=organic&utm_campaign=open_box_rotation&utm_content=forgestar_cf5_149

09/01/2026

The 815-hp Mustang GTD can now be tuned directly through the OBD-II port with HP Tuners—no controller upgrade required.

See what changed, which hardware is supported, and what owners and calibrators need to know: https://smgspeed.com/blogs/news/hp-tuners-mustang-gtd-direct-obd2-tuning-no-controller-upgrade

08/31/2026

“Rated for 1,200 HP” doesn’t tell you whether a driveshaft is safe at 150 mph. Length, diameter, material, wall thickness, and shaft RPM all affect critical speed.

Read the full guide: https://smgspeed.com/blogs/news/driveshaft-critical-speed-horsepower-rating-aluminum-carbon-fiber-guide

08/30/2026

Supercharger boost dropping at high RPM? Learn how to separate belt slip, heat soak, and ECU-commanded throttle closure before throwing parts at the problem.

Read the full guide: https://smgspeed.com/blogs/news/supercharger-boost-drops-high-rpm-belt-slip-heat-soak-throttle-closure-guide

08/29/2026

Why do supercharged Coyotes need colder spark plugs—and how tight should the gap be? This guide breaks down heat range, boost pressure, ignition energy, fuel choice, and the warning signs to watch for.

Read the full guide: https://smgspeed.com/blogs/news/ford-supercharged-coyote-cold-spark-plugs-heat-range-gap-guide

08/29/2026

671.2 HP on 93 octane. 🔥

Evan’s supercharged 2019 Mustang GT went to North Texas High Performance for headers and a custom tune on the NTHP Mainline Dyno. Final result: 671.2 hp and 585.5 lb-ft.

Built and tuned by North Texas High Performance—give NTHP a follow and message them when you’re ready to turn your Mustang up.

08/29/2026

California lawmakers passed SB 1069, a SEMA-backed bill that could create a conditional sales pathway for qualifying emissions-related aftermarket parts while CARB completes Executive Order review. It does not make unapproved parts street-legal today. Here’s what could change, what would not, and why enthusiasts nationwide should pay attention.

Read the full guide: https://smgspeed.com/blogs/news/california-sb-1069-carb-conditional-sales-performance-parts

08/22/2026

🏁 EVENTURI CARBON INTAKES ARE NOW AVAILABLE FROM SMG 🏁

Three premium C8 Coupe systems are now live as special-order products:

🔥 C8 Stingray Coupe — $2,495
Eventuri reports gains of 15–18 whp.
https://smgspeed.com/products/eventuri-carbon-fiber-intake-system-2020-2024-chevrolet-corvette-c8-stingray-coupe

🔥 C8 Z06 Coupe — $2,695
Eventuri reports 19 whp peak and up to 42 whp through the midrange.
https://smgspeed.com/products/eventuri-carbon-fiber-intake-system-2023-2024-chevrolet-corvette-c8-z06-coupe

🔥 C8 ZR1 / ZR1X Coupe — $3,595
Eventuri reports up to 110 whp through the midrange.
https://smgspeed.com/products/eventuri-carbon-fiber-intake-system-2025-chevrolet-corvette-c8-zr1-2026-zr1x-coupe

Pre-preg carbon construction, patented Venturi housings, and clear trunk panels that put the hardware on display.

These are SPECIAL ORDER / DROP SHIP and are not stocked at SMG. Contact us if timing is critical. Verify Coupe fitment before ordering; Eventuri products are non-returnable once ordered.

Eventuri C8 ZR1 and ZR1X Carbon IntakeDeveloped for the twin-turbo LT7, Eventuri’s ZR1 system combines a high-volume dual Venturi housing with enlarged carbon-fiber turbo inlet tubes and a clear replacement trunk panel. The turbo tubes provide approximately 30% more internal volume than the factor...

08/21/2026

🔥 OPEN BOX EXHAUST DEAL DROP 🔥

Five one-off Scratch & Dent / Open Box exhaust systems for Mustang, Camaro, and Corvette. Every listing shows the exact condition photos plus a clean new-product reference image.

💥 AWE 2024–26 Mustang GT Touring Cat-Back — $999
https://smgspeed.com/products/open-box-deal-awe-3015-33650-touring-cat-back-2024-2026-mustang-gt

💥 MBRP 2016–19 Camaro SS Cat-Back — $599
https://smgspeed.com/products/open-box-deal-mbrp-s7035blk-armor-blk-cat-back-2016-2024-camaro-ss

💥 MBRP 2015–17 Mustang GT Race Cat-Back — $379
https://smgspeed.com/products/open-box-deal-mbrp-s7278blk-race-cat-back-2015-2017-mustang-gt

💥 Borla 2024–26 Mustang GT S-Type Cat-Back — $1,099
https://smgspeed.com/products/open-box-deal-borla-140960bc-s-type-cat-back-2024-2026-mustang-gt

💥 MagnaFlow 1968–73 Corvette Street Series — $899
https://smgspeed.com/products/open-box-deal-magnaflow-16842-street-series-exhaust-1968-1973-corvette

Quantities are ONE each. Damage is fully disclosed. FINAL SALE. Once they’re gone, they’re gone.

Shop the full Open Box collection:
https://smgspeed.com/collections/open-box

Open Box Items Have been opened by either us, or returned from a customer and opened to inspect. Open Box items will have condition specific pictures and descriptions depicting the actual condition. OpenBox Items are sold Sales Final due to deep discounting.