PART NUMBER: 61-1735A
Fits both 2.0 and 2.5 motors. Works with factory and aftermarket engine mounts such as our 40% stiffer rubber mounts.
Drops the 2.5L motor to the same effective height as the factory 2.0L. This lowers the center of gravity for better handling and allows the 2.5L to fit underneath the factory shock tower brace. With these you can also fit our MP62 supercharger to the 2.5L motor without needing to cut the hood for clearance.
Previously, the only way to lower the engine was with special engine mounts only available in "race" durometer, and those mounts transfer huge vibrations into the chassis. We set about designing these brackets so that you can lower the motor while still retaining rubber engine mounts that keep the car enjoyable for all uses. (Specifically our GWR rubber Competition Engine Mounts part number 61-1713)
Use these on your 2.0L motor to lower the engine's center of mass within the car for a competitive advantage.
Works with the OEM engine mounts and aftermarket mounts.
Kit includes two drop brackets and eight washers. Stack four washers in the bracket's mounting cup for each bracket to take up the unthreaded length on the stud so that the nut can tighten down fully on the stud.
This version fits with most aftermarket headers including our standard Max Power header and our street header. However, it DOES NOT clear Long-tube headers or our new larger 1.8" Max Power header because those headers are so big that they use all the available space and that leaves no space to move the motor in any direction.
INSTALLATION NOTE: If your factory bolts for the bracket to engine block are 40mm long, you will need to replace those with 30mm length bolts (M10).
MIATA MX5-NC 2006-2015 · 6 Speed
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MIATA MX5-NC 2006-2015
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Just finished installing these on my 2.5. During install I discovered that the engine mount studs on both OEM and AWR mounts are not threaded down to the base plate. There is at least 3/8 inch of un-threaded stud at the base when the new drop brackets are in place. This will prevent the the base of the drop bracket from being pressed to the base of the engine mount and will result in extreme play of the engine on the mounts.
Simple solution is a spacer. I used 6 1/2 inch ID washers per stud to provide complete thread engagement and properly secure the drop bracket to the engine mount.