$4.99 Shipping over $49 w/coupon DI499 | 2,350+ Products | 83 Brands | 12,000+ Reviews | 1,550+ Detailing Articles
Close Menu

Shop Categories

Shop Brands


Clean ⋅ Shine ⋅ Protect

Shop Categories

Shop Brands


Cookies are disabled in your web browser. To shop with Detailed Image, please turn cookies on and then refresh the page.

Gtechniq C4 Permanent Trim Restorer

Best Seller Gtechniq C4 Permanent Trim Restorer - 30 ml
Add to Cart
This product qualifies for $4.99 Shipping with coupon DI499
Please note: this product cannot be shipped through the air


Quantity Price Savings  
3 + $58.49 10%
Add 3 to Cart

Available Sizes

Gtechniq C4 Permanent Trim Restorer
15 ml
($2.33 / ml)
Gtechniq C4 Permanent Trim Restorer
30 ml
($2.17 / ml)

Product Information

  • Restore your trim to like new condition!
  • Formula bonds directly to your trims molecular structure
  • Durability of up to two years!
  • Product Codes: C4 0.015 x6, C4 0.03 x6
  • Read full description

Customer Reviews

100% of customers said that they would buy this item again
Based upon 20 ratings

Product Description

Gtechniq C4 is not just your regular trim coating, it will bond to your trim restoring it to like new condition with ease! Most trim restorers or protectants are shiny coatings that sit on top of the plastic and they only provide temporary shine and color restoration. C4 actually swaps part of its molecular structure with the surface molecules of your car's trim! This allows the C4 to keep your trim looking brand new for up to two years! Use C4 on trim, weather stripping, plastic mirrors, battery covers, hoses, etc. If you are looking to restore your trim to like new condition grab a bottle of the C4 Permanent Trim Restorer today!

Application Information
  • Do not dilute
  • Apply at a temperature above 40 degrees F and not in direct sunlight
  • If applying indoors ensure that there is adequate ventilation and wear protective gloves
  • Ensure that the surface to be coated is entirely free from fats/oils or previously applied products
  • Use the lint free application pads supplied to spread the coating onto the trim
  • Because the coating forms its bond immediately it is very important to remove excess coating from the treated surface and any that has gone onto the vehicles bodywork or glass within 5 minutes of application
  • To remove residue use a clean microfiber cloth

Professional Detailer Reviews

If you are wanting a product that is extremely easy to use that will darken and protect your trim for years, not weeks or months then you will certainly want to give Gtechniq C4 a try.
Product Review: Gtechniq C4 Permanent Trim Restorer


Applying Gtechniq C4 Permanent Trim Restorer

Play Video

From The Label


Ensure your trim is thoroughly clean and free from any other product. Dab product onto applicator pad, apply and remove residue immediately with a Gtechniq MF1 ZeroR Microfibre Buff Cloth (or similar towel like the DI Microfiber All Purpose Towel).

Customer Reviews

Reviewed by on
Would they buy this item again? Yes
Having had a good experience with several other Gtechnic products, I wanted to give this a try on fairly new trim. I have a bed cover on the back of a 2021 Honda Ridgeline that is going to be up against quite a bit of UV exposure in the south. Honestly I was surprised how it was able to add richness to basically new trim, adding just a bit more darkness.

C4 is effortless to apply and allows for abundant working time. To help make the product go farther, I "procured" some of my wife's make-up pads. The don't hold as much product and that way you can keep the nice Gtech one for another day.

Similar to other's comments, I've tried a wide variety of trim products and cleaners. I especially like not having to remove the streaks that oil or silicone based products leave on the paint after it rains. Would have liked to have tried it on weathered trim. Using a Mr. Clean sponge on old trim works wonders for turning it black again. Make sure to tape the adjoining painted surfaces. Coating it with C4 at this point should make a big difference.
Reviewed by on
Would they buy this item again? Yes
IT worked "ok" - 2007 Corvette ZO6, was recommended by the business that did the ceramic coating. IT did "black" most of the trim that I put it on, The front fender wells were definitely "grey" and after the application were a "darker grey". Second application made no difference. When compared to a spray on product that my mechanic gave me that e uses on his show and race cars (17.99) could tell no immediate difference.
It is my hope that the difference will be in the longevity of the product, vs the immediate result.
Reviewed by on
Would they buy this item again? Yes
I most recently used C4 on a 2019 Toyota Tundra and the owner was amazed at how the plastic trim looked! I see this truck on a monthly basis so I will be able to test the durability of C4. The application is super easy and the results are phenomenal! This is by far my go-to coating for exterior plastic trim.

Read all customer reviews of Gtechniq C4 Permanent Trim Restorer

Write your own review

My Offers
Black Friday 2
Limited Time Only - BOGO Buy 1 Get 1 Free - Shop Now
Quantity Discounts - Buy More, Save More!
Free Stuff
Close overlay