Ground clearance for ultra racing lower bars

[starscream]

Hi!! i recently installed ultra racing fender bar on my wira sedan..and it gave me a significant improvement on my handling! congratulation to the design department! i have some enquiry needing assistant below:

4 point lower bar & side bar = how much ground clearance will reduce (in mm) from the lowest point of the bar. Im afraid it hits higher bumps or big rocks.