PART NUMBER: 61-2536
SuperPro bushings use a proprietary polyurethane mix that allows for the precise control of a poly bushing with very little impact on NVH. They also have internal geometry designed to retain grease, and a proprietary lube which prevents noise. This means they don't squeak, and require no maintenance (as long as you use the included grease). SuperPro offers a lifetime warranty against squeaking or any other failure on these bushings - even if you race the car, which is basically unheard of in the bushing world!
Tighten up that old suspension by getting rid of old cracked bushings and replacing them with lower deflection urethane so your Miata is tighter and faster than original. Requires 1 kit per vehicle
Single Kit Contains 12 Washers, 30 Inner Tubes, 36 Bushings. Includes bushings for all suspension bushings in the car.
Front Control Arm Lower-Inner Front Bush Kit
Front Control Arm Lower-Inner Rear Bush Kit
Front Control Arm Upper-Inner Bush Kit
Rear Control Arm Lower-Inner Bush Kit
Rear Control Arm Lower-Outer Bush Kit
Rear Control Arm Upper-Inner and Outer Bush Kit
SuperPro products are formed using their own engineered product designs and are made using a proprietary engineering grade polyurethane formula with unique material properties. SuperPro Polyurethane is a special elastomer based material which gives an extremely durable suspension product boasting the best characteristics of both rubber and plastic.
NA vs NB kits:
The only difference between the NA kits and the NB kits is that the NA kits include 2 x SPF1987K sway bar end link bushings that do not fit the NB cars (NBs have ball joints at both ends of the sway bar endlinks thus do not need any bushings for the endlinks), so those NA link bushings are omitted from the NB kits.
Used these to replace very old and blown out stock bushings.
Made the car feel much tighter and predictable.
Depending on how old your bushings were be prepared for trench warfare getting the old ones out.
My NB2 had over 200K miles on the original suspension. I figured it was time to refresh the entire thing by completely stripping it down and replacing all the worn components. This of course includes the bushings. I didn't want a track car but instead an epic canyon carver with just enough comfort for daily driving and longer trips. Upgraded bushings were part of the equation.
I decided on SuperPro after sifting through all the info I could find on Poly vs Upgraded Rubber vs Superpro. I made the choice based on my driving style, price and install difficulty.
The install: All I can say is it's not horrible. Getting the old bushings out was tricky but doable (thanks to YouTube and the Car Passion Channel for the great tips!). Installing the Superpros required nothing more than some all-thread, big washers and nuts to press the bushings into the control arms. Oh, and lot's of the supplied grease! Keep plenty of shop towels handy!
The Ride and Handling: Great! The Miata still sits on its original Bilsteins so I've got an apples-to-apples comparison here with the original bushings. There really isn't any additional harshness. Everything just feels tight and precise. The car will eventually be riding on adjustable Konis and FM springs but I really wanted to see how the Superpros felt with everything else stock.
Summary: I would recommend Superpros to anyone who wants upgraded bushings but doesn't want the harshness of typical poly. For sporty daily driving, canyon carving and perhaps the odd autocross, they seem perfect.