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GTechniq C4 Permanent Trim Restorer 30 ml.

C4 becomes one with your vehicle's trim!

Gtechniq C4 Permanent Trim Restorer isn't just a coating. C4 becomes an extension of the plastic it's protecting to restore trim to like-new condition. This chemical bond ensures maximum durability. Trim will remain in its new condition for up to two years with one application of Gtechniq C4 Permanent Trim Restorer.

Most other trim restorers or protectants are shiny coatings that sit on top of the plastic. They provide temporary shine and color restoration, but they disappear fast. Gtechniq C4 Permanent Trim Restorer actually swaps part of its molecular structure with the surface molecules of your car's trim. C4 doesn't sit on top of the trim - it becomes the trim! That's how Gtechniq C4 Permanent Trim Restorer keeps your vehicle's trim looking flawless for two years!

Gtechniq C4 Permanent Trim Restorer renews the color of trim, but it does not add artificial gloss. Matte surfaces will remain matte. Trim pieces will look new, not dressed, to give your vehicle an overall newer appearance.


Do not dilute. Apply at a temperature above 41°F (5°C) and out of direct sunlight. If you are 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. We recommend cleaning trim vigorously with IPA (isopropyl alcohol) prior to application. Use the lint free application pads supplied to wipe the coating onto the trim. Because the coating forms its bond immediately, it is very important you remove excess coating from the treated surface and any that has gone onto your car’s bodywork or glass as soon as possible. To remove residue, you should use a microfiber cloth and use a light touch, i.e. not like buffing a wax but more like using a chamois on your car.

30 ml.

GTechniq C4 Permanent Trim Restorer 30 ml.

Our Price: $64.99
Item ID: GT-C4-30
Availability: Usually ships the same business day
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80% Recommend this product (4 of 5 responses)
By Roger
Brook Park, Ohio
November 5, 2017
It Works
I waited 1 year to write a review on this stuff to see how durable this stuff is. Like every GTechniq product I've use it gave excellent results. One year later and it still going strong. Looks great and after an Ohio winter full of salt dirt and sun it's still on the vehicle. One tip when applying is get extra make-up pads at the store. They're inexpensive and you'll need them when applying the product.
ProsRestores to factory new looking with unmatched longevity in protection and a beautiful looking finish.
ConsInitial price but it's worth it. More pads would be nice but you can get make-up pads that are inexpensive at the store.
October 13, 2016
Excellent product...but it needs more applicator pads.
ProsBest restoring product I know of...
By Ray
Walworth, NY
August 23, 2016
Excellent Results!
Used this on all the black trim on my 2008 Silverado. A month later and several washings and everything still looks great. Amazing how so little goes so far and restores trim to a nice low gloss black. Nothing else I've used did this nor did it last. A few people who saw the truck thought I bought new trim. Love this stuff!
ProsRestores trim to original color and luster, easy to use and a little goes a long way.
By Damien
Cincinnati, OH
May 18, 2014
Great restoration!
I just applied C4 to my 2007 Avalanche Cladding yesterday. The restoration ability of this product is amazing! Only time will tell how durable the product is, standing up to Ohio seasonal weather but I am hopeful based on previous reviews. My only comment is for the price, you could use a bit more of the product to finish the cladding with adequate coverage. I had to really conserve the produce to completely finish the truck.
Pros++ restoration, ++ easy application after cleaning
Cons-- size is too small. Need more ML to complete 2007 avalance.
By Kevin
May 4, 2013
Amazing Results
Applied this 1 year ago to my Durango and it still is working great. I cleaned the black plastic trim with CarPro Eraser until I was getting very little to no dirt on my microfiber towels. I coated the plastic with one thin coat and let dry. This is a vehicle that sits out in the elements everyday and night in PA so it gets a good dose of summer and winter. I think the trick is making sure to remove all dirt and oils before applying. Not sure if it will make it 2 years or not but it has a fighting chance since it has already lasted 1.