We make all the parts the same in the sense of materials; gel coat is the first layer down, then polyester resin with the reinforcements of carbon fiber, then a layer of fiberglass and finally an additional layer of carbon fiber.
When we use black gelcoat, it covers any small imperfections or pin hole bubbles in the lay up. These are non structural issues, simply cosmetic. When we use the clear gel coat, every little imperfection is visible and it takes a lot more time to get it looking great. Consequently the clear gel coat parts cost more from a time and material standpoint. We also clear coat over the clear gel gel coat with a PPG Polyurethane that is helpful with the UV protection. This is yet more steps of sanding, painting, sanding and buffing. The black or dark gray parts come with either a black gel coat finish or a dark gray primer finish that you can paint over or wrap.

The Maier parts are not hanging any lower than the floor of the car. That said the front spoiler’s shape is extending forward of the nose an inch or so and makes is easier to hit for the lowered cars navigating the curb stones or parking lot concrete.

Our customers HAVE done millage test and reported back “no noticeable” range changes. It is challenging to get perfect results in imperfect testing methods so, we can not officially make black & white claims.

The parts are bolt on or tape parts to the existing panels. We are not aware of any warranty concerns at this point. Tesla has tested some of our parts but has not come back with any conclusive statements.

The rear spoilers are (2) sided 3M tape only. The front spoiler and side skirts are mounted with tape and with 4 or 6 bolts. Holes need to be drilled ONLY to the Maier parts to fit up with the stock holes on the Tesla. Meaning, if you choose to take the parts off at some point, you can put the car back to original without addressing unnecessary holes.

Yes, We use Polyester resin, marine UV stable gel coats and ultimately PPG polyurethane clear coat with a touch of black pigment.
While there are companies out there that argue the epoxies are the best way to laminate a part (I, Charles Maier, can say that since 1992, I have been using Epoxies & Polyesters) I choose to make these in Polyester and while there is a list of pros & cons to consider, we think the polyesters in the long run are the best solution for non yellowing, clear carbon parts over time.

Absolutely… We use a custom woven plain weave fabric made by Composite Fabrics of America in Taylorsville, NC. This special weave is an 8 by 12 unbalanced warp & fill. Meaning, we have less toes or strands in one direction. It helps to separate the material a little allowing the fabric to lay flat against the surface of the part, giving the appearance of a fatter bundle. We love the look of this!!

You are welcome to email us about making fiberglass parts if you like. We do NOT make a polyurethane option.

We use a ISO-tolic “polyester” resin. You can buy a compatible resin in small quantities at: Tap Plastics, Finish Masters, Lowe’s or Home Depot. The mix instructions will be with that kit.

As for the clear coat, we use a PPG clear. Cromax Premier LE LE8700S, Activator LE1005S.

We make every effort to stock these parts on the shelf. Given the current production, if we are out of stock you may wait up to a week for the item to be boxed up to ship. If the items are not in stock we will notify you immediately with an estimated delivery date and ask if you have any scheduling conserns. As we make them here in California, we can typically accomodate speedy turn around times.