GKTech S13 240SX Solid Rear Subframe Conversion Bushings The GKTECH solid subframe conversion bushings are a direct replacement of the standard items and allow you to fit an S14 240sx/S15 Silvia rear subframe in your S13 240sx, aswell as R33/R34 Skyline rear subframe in your R32 Skyline.The solid bushings also ensure that movement of the subframe is kept to a minimum. They eliminate axle tramp whilst also raising the subframe which helps to correct the roll center on lowered vehicles by raising the subframe in the chassis. CNC Machined from 6061-T6 aluminum Vehicle Compatibility Nissan S13 240sx Nissan S13 Silvia Nissan Skyline R32 GTS-T (2WD) Nissan Cefiro A31 FAQ What's involved in installing these conversion bushings?You'll need to remove the standard bushings from the S14 240sx/S15 Silvia subframe that you're installing. There's a few ways to remove the standard bushings which option you choose is up to you (google is your friend). Once you've got the standard bushings removed you need to press fit the new bushings in their place. TIP: put the bushings in the freezer for a few hours before installing them. This will shrink them slightly to make things a little easier. What's the advantage of installing an S14 240sx/S15 Silvia subframe?The S14/S15 subframe has better geometry than the S13 unit and also offers more track (ie. width). What’s the advantage of these bushings ?Besides allowing you to install an S14/S15 rear subframe in your S13, the solid bushings offer a more solid rear end = better driver control and feel. Do these cause much vibration/noise in the cabin?Not really. Obviously anything solid or more rigid is going to cause an increase in noise and vibration however I'd hardly say that it's noticeable. Chances are if you're installing these you've already got coilovers, your car is lowered, you've got an aftermarket exhaust etc. etc. Do these bushings change the height of the subframe?Yes, they raise the subframe which improves the roll center on lowered vehicles
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