Made of dry carbon, the roof’s structure and strength have been fully tested to pass the Japanese safety standard. The test, frequently called a contortion test or a distortion test, is conducted at an official inspection agency with the parts fully installed on the vehicle and strength can be calculated even for the monocoque body structure. The measurement sensors are attached at the several places on the vehicle. Then the actual force is applied and the contortion / distortion of the body is calculated while the vehicle is actually moving.
The safety ratio is derived from the data acquired from the test, then the safety ratio is checked against the unique number each country sets to pass the standard.
The weight of the dry carbon roof is 4.9kg (about 11 pound) lighter than the stock metal sheet. [The weights of the stock roof and carbon roof are 7.0kg and 2.1kg respectively.] Even with this huge reduction of the weight, nothing is sacrificed on the strength. The dry carbon roof is as strong as the stock roof. It is also available with the Mine’s standard of no coating or black smoke coating. The black smoke coating is the super clear coating with smoke color treatment. From a distant view, it looks like the piano black color but with a closer view under the sunlight, you can see the carbon weave.
The un-coated version is for the customers who would like to paint the carbon roof. Otherwise, Mine’s recommends the either super clear coating version or the black smoke coating version.
It is to be attached to the roof structure by professional strength adhesive. The stock roof has to be removed before installing the Mine’s carbon roof. (This is not an add-on to the stock roof).