Terms & Conditions


All Frankenstein Engine Dynamics products are custom, made to order cylinder heads and manifolds and as such do not carry any warranty neither expressed nor implied.

Frankenstein Engine Dynamics also cannot guarantee the third-party manufactured components used in our products. While we utilize the best available components for our products and perform quality control checks, we do not manufacture and therefore cannot guarantee the components. Some of the components we cannot guarantee include, but are not limited to: cylinder head/manifold castings, porosity and core shift issues, valves, valve springs, valve spring retainers, valve locks/keepers.

Frankenstein Engine Dynamics will not and cannot guarantee horsepower numbers due to various factors and other engine components that are out of our control.


Frankenstein Engine Dynamics has a no return policy due to the customized nature of the product that we sell. All sales are final and no refunds will be given for any reason.

Frankenstein Engine Dynamics wants our customers to be completely satisfied with their products and we strive to perform quality control checks on everything we sell. If a customer feels that there is a problem with our workmanship, we will request that the product be returned to us for inspection. We will inspect the product and determine if our workmanship is an issue and if so, we will do everything we can to correct the problem. We cannot accept cylinder heads or other products that have been installed or utilized in any way because Frankenstein Engine Dynamics cannot guarantee that they were installed or utilized correctly.


Frankenstein Engine Dynamics sells products that are intended for racing use only and used in a controlled environment. Our products are intended for off-road use only. We will not be held responsible for any damages or injuries of any kind. The customer assumes full responsibility of our product upon delivery.


Frankenstein Engine Dynamics collects, stores, maintains, and shares information about you in accordance with its Privacy Policy, which is available at https://frankensteined.net/privacypolicy/. By accepting this Agreement, you acknowledge that you hereby agree and consent to the terms and conditions of our Privacy Policy.


To provide excellent customer service, Frankenstein Engine Dynamics will enter in all orders into our database, any custom work or other requests MUST be disclosed before any work is started. This will ensure that our customer receives the product that they request and will help with timely processing. We require a 50% deposit on all orders before work can begin and the balance of the order will be due upon completion. We will not release any product until the remaining balance has been paid in full.


Frankenstein Engine Dynamics strives to have all orders completed as quickly as possible. However, we cannot guarantee a strict timeline of completion because of factors beyond our control, such as weather conditions or back order of components from other manufacturers. If we determine that an order is going to take longer than anticipated we will notify the customer as soon as we know that there may be a delay.

Frankenstein Engine Dynamics appreciates all customers and the support they have given us over the years. We want to deliver an exemplary product and want our customers to be completely satisfied. If there is something that we can improve upon, please notify us and we will take all reasonable suggestions into consideration.