PART NUMBER: 61-2118
It comes fitted with 80 durometer bushings to eliminate movement of the rear end in the subframe reducing wheel hop under hard straight line acceleration and when exiting a corner. Installing a JBR mount gets rid of the unwanted slop and flexing which allows for the power to go directly into rotating the tires, instead of flexing the soft rubber of the OEM mount. Giving you better feedback, sharper response and more predictability on throttle input.
Features: - Designed and manufactured in the USA - Weighs only 4lbs. 8ozs. 1lb. 2ozs. more than the OEM - Anodized for corrosion resistance
Application: - 2016+ Mazda Miata MX-5 ND/RF
The kit includes: - 1 Rear Differential Mount - Shipping is free in the US and our Hassle Free Lifetime Warranty is included
Brian application notes. Yes you will feel some added vibrations at idle and low rpms but power delivery is more direct and responsive, great for track use, less chassis windup.
FIAT 124 NOTES: Originally designed for the MX-5, but YES, this diff mount can also be used in the Fiat 124, with just some minor additional work on the install. Notes below are courtesy of customer James who took the plunge and bought this diff mount for his Fiat and worked through the details:
The JBR differential mount fits and made an amazing improvement in how the car puts down power and in making it more predictable if/when I want the back end to step out.
JBR s ND install instructions are almost the same for the Fiat. Drop muffler, support diff, take out side diff mount bolts. The main differences I saw is that the fiat has something to do with EVAP in the way of accessing the top diff bolts. Removed two 10mm bolts and massaged it out of the way. I then needed to release the two hard fuel lines (I think they re fuel) from the driver side white clip. This gave me room to get the mount out (probably the most difficult part). The JBR mount went in really easily and as mentioned made a huge difference.
This modification is a true game-changer. I can feel a little less drivetrain loss in both straight-line acceleration and corner exit. Much more consistent delivery of power to the rear wheels. A bit more gear whine and slight noise and vibration (but not harshness) coming from the diff. It increases the drama of revving out the motor above 5K rpm, but is not noticeable under 4,500 rpm. This noise and vibration may calm down after a couple hundred miles. Car feels a bit quicker in a straight line. The gearbox feels slightly more substantial and meaty with changeups, though this could be a placebo effect. Much more feedback from the rear axle under acceleration, compared to the mushy-feeling OEM differential brace. For the changes this brace has made to the performance and feel of the vehicle, this mod is a total bargain. Install is easy, although requires careful and patient hands and removal of the muffler. I cannot wait to try this mod out on track this Friday at Streets of Willow.