We installed these OBX long tube headers on my 2020 Rebel at my shop, steering shaft hits the headers must dent in the area of contact to header for clearance, the side sway bar bracket both sides (lower portion) needed to be heavily trimmed to clear headers. We heat wrapped the steering shaft area as well as applied heat & dented that section in for clearance. Check engine lights came on after about 10 miles we are installing spacing to hopefully correct issue. Over all they are definitely worth the money, performance is very noticeable as well as the sound is more of a deep engine sound through exhaust witch is bada$$.
If you don't address the clearance for header to steering shaft or sway bar brackets you will have future issues with the heat from headers melting away the rubber boot on shaft and will feel contact issues to header also the lower portion of headers will rattle against sway brackets if you don't trim for clearance.
(Pics) Look at the side by side size difference from stock to these WOW!
Hope this saves you guys time, money and aggravation.
-Vinny
Mac Performance