For MR03 replace the lower cover.
Remove the Carbon Plate to easy change the Tie Rod.
If you use PN Upper Arm MR3033 MR3034 and MR3035, you can reverse the king pin to install, make it much smooth!
Pro Front Lower Arm Set - This kit includes a couple of very nice feature and functionality. Firstly lets look at the stock plastic piece. Flexes a lot, at times the left ride height and the right ride height is not even balance. Try switching a tie rod, be prepared for a 15 mins job taking everything apart just to change a tie rod. Lastly the king pins POPs out at time during heavy races. Well this kit solves all the above problems. Aluminium bottom fronts bolts to the main chassis ensuring you a prefect left and right ride height. Bundled with separated carbon piece allows you to remove and change your tie rods on the fly. Specially tailored king pins are provided, held in place by metal c-clips. There is no way the king pins are popping in any harsh racing environments. And of best of all, engineered in way that allows you to do a reverse king pin install that provides 30-40% more smoothness to your front suspension. Worth it? YES every single bucks.