SMG Speed Shop

SMG Speed Shop Old skool speed shop, new skool vibe. Come in talk cars, get expert advice on your build

E85 is a label—not a guarantee that every tank contains exactly 85% ethanol.A proper flex-fuel setup has to account for ...
09/08/2026

E85 is a label—not a guarantee that every tank contains exactly 85% ethanol.

A proper flex-fuel setup has to account for the measured blend, rising fuel demand, injector and pump headroom, fuel pressure under boost, timing and boost strategy, cold starts, and safe responses to low content or sensor faults.

Our new technical guide breaks down seven checks that matter before turning up a flex-fuel performance car.

Read it here: https://smgspeed.com/blogs/news/what-ethanol-content-changes-in-a-performance-tune

Illustrative technical image created for this SMG article.

🔥 MONDAY OPEN-BOX DEAL: Save $946AWE 3015-33650 Touring Edition 3-inch cat-back with Diamond Black tips for 2024–2026 Mu...
09/07/2026

🔥 MONDAY OPEN-BOX DEAL: Save $946

AWE 3015-33650 Touring Edition 3-inch cat-back with Diamond Black tips for 2024–2026 Mustang GT Fastback models without Active Exhaust.

New price: $1,945
Open-box price: $999
You save: $946 (48.6%)

One unit only. Both resonators have small shipping dents; all hardware is present and the remaining parts are in great condition. Review every actual-condition photo before ordering. Not for convertibles or Active Exhaust cars. Verified fitment: 2024–2026 Mustang GT and GT Premium.

FINAL SALE — no returns, exchanges, or cancellations.

Shop the exact system: https://smgspeed.com/products/open-box-deal-awe-3015-33650-touring-cat-back-2024-2026-mustang-gt

LS Fest East is almost here—and the best event weekends start with a verified baseline.Our new nine-point checklist cove...
09/07/2026

LS Fest East is almost here—and the best event weekends start with a verified baseline.

Our new nine-point checklist covers tires, wheel torque, driveline hardware, cooling, fuel pressure, fluids, data logging, brakes, suspension, and safety equipment before an LS- or LT-powered car hits the road or track.

Read the full checklist: https://smgspeed.com/blogs/news/ls-fest-east-2026-pre-event-performance-car-checklist

Illustrative image created for this SMG article.

09/05/2026

Your next build might be closer than you think.

Up to $5,500 in buying power with Snap Finance for qualifying customers. Build now. Pay over time.

Shop performance parts, wheels, suspension, exhaust, fuel system upgrades and more at SMGSpeed.com.

We sell fun, not frustration.

*Up to $5,500 in buying power for qualifying customers. Terms apply.

🔥 FRIDAY OPEN-BOX DEAL: Save $850.99Borla 140960BC S-Type Cat-Back with black chrome tips for 2024–2026 Mustang GT coupe...
09/04/2026

🔥 FRIDAY OPEN-BOX DEAL: Save $850.99

Borla 140960BC S-Type Cat-Back with black chrome tips for 2024–2026 Mustang GT coupe models without Active Exhaust.

Regular price: $1,949.99
Open-box price: $1,099
You save: $850.99 (43.6%)

One unit only. Both mufflers have minor scratches and small shipping dents; no missing components were reported. Review all actual-condition photos before ordering. Not for Active Exhaust cars or convertibles. Buyer must verify exact fitment.

FINAL SALE — no returns, exchanges, or cancellations.

Shop the exact system: https://smgspeed.com/products/open-box-deal-borla-140960bc-s-type-cat-back-2024-2026-mustang-gt?utm_source=social&utm_medium=organic&utm_campaign=open_box_rotation&utm_content=borla_140960bc_1099

🔥 ONE-WHEEL OPEN-BOX STEAL: $149Forgestar CF5 • 19x9.5 • +29 • Satin BlackFits listed 2005–2026 Mustang front applicatio...
09/01/2026

🔥 ONE-WHEEL OPEN-BOX STEAL: $149

Forgestar CF5 • 19x9.5 • +29 • Satin Black
Fits listed 2005–2026 Mustang front applications.

Regular price: $485
Open-box price: $149
You save $336 — 69%

One wheel only. It has localized cosmetic rash on the outside lip from transit damage; review every condition photo and verify fitment before ordering. Final sale.

Shop the exact wheel: 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

Address

17521 Matany Road Suite 2300
Justin, TX
76247

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm
Saturday 10am - 2pm

Telephone

+19406489812

Website

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