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Bull Boost Performance

Titanium Valved Catback Exhaust for Porsche 911 991 991.1 991.2 GT3 4.0T

Titanium Valved Catback Exhaust for Porsche 911 991 991.1 991.2 GT3 4.0T

Regular price $6,124.91 USD
Regular price Sale price $6,124.91 USD
Sale Sold out
Shipping calculated at checkout.

Upgrade your Porsche 991 GT3 / GT3 RS with the STRATEC Valved Sport Exhaust System, engineered to deliver an aggressive, motorsport-inspired exhaust note while maintaining refined drivability. Designed to maximize the sound potential of Porsche’s high-revving flat-six engine, this system produces a sharp, high-pitched tone reminiscent of race-bred performance.

Featuring 2.5-inch mandrel-bent piping, an optimized X-pipe design, and extended loop sections, this exhaust enhances airflow, improves throttle response, and amplifies the engine’s signature high-frequency scream. With valves open, it delivers an aggressive, track-focused sound with crackles and dramatic overrun effects. With valves closed, it provides a more subdued tone for comfortable daily driving with minimal cabin drone.

Built for enthusiasts who demand both sound performance and refinement, this system offers a balanced blend of race-inspired tone and street-friendly usability.

Key Features

  • Valved exhaust system with switchable sound modes

  • High-pitch, motorsport-inspired exhaust tone

  • 2.5-inch mandrel-bent piping for optimized flow

  • Performance-focused X-pipe design

  • Extended loop sections to enhance sound pitch

  • Aggressive crackle and flame potential with proper tuning

  • Engineered to minimize unwanted cabin drone

Vehicle Fitment

  • 2014–2019 Porsche 991 GT3

  • 2016–2019 Porsche 991 GT3 RS

The STRATEC Valved Sport Exhaust System delivers an uncompromising sound upgrade for GT3 owners seeking a sharper, louder, and more race-inspired driving experience.

Shipping & Returns

Shipping on most orders in 24-48 hours special orders can be 2-3 days. Returns see Returns Policy.

We have a 30-day return policy on most products, which means you have 30 days after receiving your item to request a return. Some products carry a longer manufacture warranty please contact us if you have questions about items.

To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at overthehilltractor@gmail.com. Please note that returns will need to be sent to the following address: 2005 Stuarts Draft Hwy, Stuarts Draft, VA 24477

If your return is accepted at damage or defective, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

If your return is due to no longer needed, wrong size order, ordered by mistake, found better pricing, etc the customer is responsible for the return shipping cost.

Any item returned over $50 cost we suggest insurance on package.

You can always contact us for any return question at overthehilltractor@gmail.com.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, we can only give 72 hours from time package is scanned delivered to accept claims. Please contact within 72 hours of delivery so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like fuel related items due to hazardous materials shipping regulations. We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Electrical parts can only be returned if new and in original condition, Used electrical parts are not returnable unless actually defective, contact us with details.

Unfortunately, we cannot accept returns on sale items or gift cards.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at overthehilltractor@gmail.com.

Most items are covered by 30 day warranty, Fuel Related parts are only covered against actually manufacture defect since the fuel produced today breaks down gaskets and seals quickly. Electrical parts can only be returned if new and in original condition, Used electrical parts are not returnable unless actually defective, contact us with details. Returns are handled on each individual item, some items will not require return for refund just that customer submit picture of proof of issue. Please contact us with questions about returns.

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  • Free Shipping

    Free shipping on orders over $150

  • Returns

    See Returns Policy Page

    Returns Policy