STM Updates, Promotions and FAQ

November 2022 Shop Updates:

We have moved to Webster!

New Address:
160 Orchard Street
Webster, NY 14580

We are now settled in the new shop and can start booking install work January 2023. We do not yet have the dyno set up, so we are not able to book tuning appointments yet, but we will update as soon as we get close!

We have extended the Cyber Week sale! Use code CYBER22 to save 5% on most parts site-wide!

Below you'll find some quick FAQ.
If you have any questions or concerns, as always, feel free to Contact Us.

To the Continental USA Only:

We currently offer free shipping on all orders over $299.00 to the lower 48 United States (excludes Alaska and Hawaii.) No code necessary.

If you apply a discount code and your cart total drops under $299, free shipping will not be activated. The total amount AFTER all discounts is what triggers the free shipping.

Exclusions apply. (Some oversize items have a flat-rate fee built in.)


We apologize for any inconvenience, but codes must be redeemed separately due to the configuration of the system. This also includes Boost Points coupons. Only one code may be used per checkout.

Some products and manufacturers have strict pricing policies and are excluded from any discount codes.

Products excluded from discount codes:


• aFe
• APR Tuning
• Arma Speed
• ATP Turbo
• BC Racing
• Buschur Racing
• Comp Cams
• DriveShaft Shop (DSS)
• English Racing
• Extreme PSI
• Fathouse Fabrications
• Forced Performance
• Fortune Auto
• JM Fabrications (JMF)
• Koyo
• LithiumPros
• MA Performance (MAP)
• Manley
• Novitech
• RaceQuip
• S90
• Tactrix
• Tilton
• Unitronic
• Vorsteiner
• WeatherTech
• Weld
• Weldon


• Some large or oversized items

Only one Code can be used at checkout.

Go to your Cart:
Review/Agree with Terms and Conditions
Go to Checkout Page or verify your PayPal or Amazon Pay account.

Select Payment Method:
Go straight to Checkout with your credit card, or use your PayPal or Amazon Pay.

If you select PayPal or Amazon Pay, you'll be redirected to their page to verify your information, then back to us. It's ok to click "Continue" on their verification page, this isn't the final step and you'll come back to us to finalize the details and discounts before you pay!

On Desktop:
Split screen display will show you your items on the right and you enter your code there and proceed.

On Mobile:
If you are on a mobile device, the layout stacks. Click the "Show Order Summary" at the top to enter your code and review all items. Only one coupon code may be used at a time.

All set! If you have any questions, feel free to give us a call!