Special Offers

Aren't you smart! You tracked down our secret promo code page. This is where we display the active deals available to our customers. Check back often for the latest offers, coupons and promotions!

FREE Swag with Custom Tune Purchase

Let everyone know you are tuned by the best in the business! Be sure to add one of our JST Decals, JSTUNED Decals, or JSTUNED embroidered keychains to your cart with your custom tune purchase before checking out (don't forget this very important step, if you do not add it you will not get it)! No code required, discount will be applied at checkout, valid on 1 item only, while supplies last, substitutions may be made, does not apply to windshield banners, cannot be combined with other offers.

$15 OFF $200+, Use Code: WELCOME2024

Welcome to Team JST! As a special thanks for joining our team, we invite you to enjoy $15 off your next purchase of $200+ on our website! Just use code WELCOME2024 during checkout! Valid for first time customers only, can only be used once for purchases over $200, cannot be combined with other offers, some brand and product exclusions apply.

FREE Shipping

Get FREE shipping on most merchandise orders $150 and over (excluding taxes, shipping, and any applied discounts). No code required, some exclusions apply, does not apply to items that ship via freight or outside of the continental US.

Package Deals

We have put together a variety of exclusive JST Performance package deals, including our popular brake package and custom tuning packages, that are designed to save you money so your modification budget can get you further! SHOP PACKAGES