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FS: Roll Center/Bump Steer Kit

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    #1

    FS: Roll Center/Bump Steer Kit

    Selling a roll center and bump steer kit. The kit uses lemforder arms and e92 inner tie rods with the MRT roll center/bump steer kit installed in them. All parts have less than 2500 miles on them, the arms and inner tie rods were purchased brand new for the kit. I purchased them used from someone else so I can't comment on how much a difference they provide. My car isn't much lower than stock so I don't really have a need for them.
    $500. Located in Detroit area. Will ship at buyers expense, include your ship to zip code when you message me.
    Attached Files
    Last edited by Ryan_R; 02-28-2024, 06:20 PM.
    Tags: None
    #2
    Price lowered.

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      #3
      Does this kit include the roll center spacer block for the MRT roll center correction kit?
      Attached Files

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        #4
        No. This is not the kit that increases steering angle.
        Kit can be seen here:
        BMW E30 / E36 / E46 - Roll-center / bump steer correction -kit
        https://mrtengineering.fi/products/bmw-e30-e36-e46-roll-center-bump-steer-kit
        Why do you need one? When lowering your car (BMW E30 / E36 / E46 etc.) the front end geometry goes wrong. The main purpose of the kit is to correct these geometry issues.The extended mounting stud changes control arm pivot point vertical distance by 20mm correcting the roll-center and camber curve. Tie rod end pivot point is also changed by 20mm in vertical direction which corrects the bump steer curve. Does it fit my car? The kit can be combined with most of the E30 / E36 / E46 control arms and knuckles/spindles. See available variations: Outer joint size: 41mm (E30 non-M / E36 M3) 48.5mm (E36 non-M / E46 M-Sport / E46 aftermarket) 50mm (E46 OEM factory) 33mm (E46 M3 / Z4M) thread tool included ** Spindle/knuckle: E30 non-M E36 / Z3 non-M E36 M3 3.0 E36 M3 3.2 / Z3M E46 / Z4 non-M E46 M3 / Z4M Is it easy to install? The kit comes with instructions, if you know how to change a control arm or an outer joint, installing this kit is basically not any harder. You'll need a press for removing the old outer joint and installing the new outer joint, no other special tools needed. If you need any further info please contact us! How about the lifetime and service of the kit? The kits have been proven on street and track applications by hundreds of our customers. We're constantly doing R&D to make the kits even better, all improvements are based on customer feedback which is very important to us.We have proven the very same bearings with no maintenance for 20,000 kilometers, through the year, in daily use without signs of excessive wear. When the bearing life comes to an end, they're easily replaceable! Bearings are available around the world from automotive and industrial dealers and any of the spare parts can be also bought separately from us. We want to keep our customers 100% happy thus we're only using the best materials and manufacturing processes available. All parts are CNC machined: aluminum parts are aerospace grade AW-7075 with hard anodized finish (silver and black), mounting studs are made of highest quality CrMo tool steel and small spacers/adapters used on the kits are 316L stainless steel. We use DHL Express shipping for all items. Please find your order tracking information from DHL website.

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          #5
          Would you be interested in splitting the control arms and the bumpsteer kit? I am interested in the control arms.

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            #6
            Still available.

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              #7
              price drop

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                #8
                Bump

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                  #9
                  still available.

                  Comment

                    #10
                    Price dropped

                    Comment

                      #11
                      still available

                      Comment

                        #12
                        price drop

                        Comment

                          #13
                          Still available

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                            #14
                            Sorry for the dumb question but I’m trying to learn more about this and interested if my car’s at the point that would need/benefit from it; if I'm understanding correctly this will allow running a lower than 13” front ride height yes? Since it’s basically adding back 20mm height to the tie rod/lca geometry?
                            2004 CB/Cinnamon 6MT Coupe
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                              #15
                              Originally posted by BigRussia View Post
                              Sorry for the dumb question but I’m trying to learn more about this and interested if my car’s at the point that would need/benefit from it; if I'm understanding correctly this will allow running a lower than 13” front ride height yes? Since it’s basically adding back 20mm height to the tie rod/lca geometry?
                              Per the MRT site:
                              WHY DO YOU NEED ONE?
                              When lowering your car (BMW E30 / E36 / E46 etc.) the front end geometry goes wrong. The main purpose of the kit is to correct these geometry issues.
                              The extended mounting stud changes control arm pivot point vertical distance by 20mm correcting the roll-center and camber curve.
                              Tie rod end pivot point is also changed by 20mm in vertical direction which corrects the bump steer curve.
                              ​

                              Comment

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