Espelir spring kit for the NB Miata (1998-2005) These springs come from Espelir’s Downsus line, which is a softer spring very appropriate for street use. These springs will lower the car approximately 43~48mm front and 27~32mm rear to give it a more sporty and aggressive stance. Learn More

Sway Bar Links made by JoyFast for the NB (1998-2005) MX-5 Miata. These sway bar links are to be used on lowered vehicles to bring back the stabilizer (sway bars) at the correct angle. Learn More

Product made by JoyFast to replace OEM Front Pillow Upper Arms with 10mm shorter ones and increase camber angle of the NA or NB vehicle by ~1-1.5 degrees. It’s made for racing use. Learn More

Original door bushing (dove tail/cups) designed by KenAuto in Japan. This is the thickest possible size and most effective door bushing on the market used by thousands on Japanese Roadsters in the circuit. This piece is a replacement for the stock part that the door sits on when closed. By replacing the brittle stock unit, you’ll notice more steering response and less suspension wiggle. This piece will do a great job of stiffening up your Miata. Installs in minutes and creates a noticeable difference in drivability. Some of the JDM shops such as Joyfast & TUCKIN99 had very high praise for the part and use them on all their race cars now! Learn More

Product made by Nielex. The original front knuckles lack the sufficient hardness of the lengthwise direction in the structure. The drivers feel that the strength of the handling is not good enough especially when they drive in cornering at the high-speed because the deflection of the knuckles is very obvious. Nielex thought up the Front Knuckle Arm Support in order to solve these problems. While we were developing this new product, we were able to get advices from Mr. Oda who used to work for Mazda for a long time and were in charge of the development of chassis and suspension of Mazda's sports cars. Once the driver installs this product, I can say that everybody can feel the wonderful effect. It can be felt even during the low-speed drive. The most impressive effect can be felt when a car runs at over 140km/h, and the driver can feel that the handling gets more stable. NA with ABS : you will need to re-route the cable of the ABS sensor. Learn More

Nielex Magical Cross is their most popular chassis item. It really changes the handling of the vehicle, making it much stiffer and much more agile. It’s made to give pleasure to the person who enjoy spirited driving, but it’ll also improve performance at the track (most Japanese tuners use this product). The kit has been tested for years before being released and it’s made to transform the vehicle and bring handling to another level. Nielex claims that even vehicles with over 120,000 miles will have stiffer chassis than new cars by just using the Magical Cross. It improves steering responsiveness and also helps keep tires to the ground for much more traction during cornering. It also reduces frame twist drastically to have a more stable and neutral car. It basically transforms the car into a real fun go kart that you can enjoy driving in the streets or at the track. Kit includes: -Front Frame Cross Bar (connects left and right of front frame near engine bay) -Front Under Cross Bars (connects front cross members and front body frame) -Rear Under Cross Bars (Connects right and left frame as well as rear cross members together) Learn More

This is the Nielex bushing kit for NA and NB Miatas (1989-2005). A great complement to a high-grip tire and adjustable suspension setup, these bushings are 7 to 15 times harder than the stock bushings and will help your car achieve superb linear handling. This kit includes bushings for the rear lower arm, upper arm and rear toe control arm. Learn More

This bar has 4 point support and help improve rigidity at the rear end of the vehicle. It connects the right and left sides of the vehicle to reduce flex and improve the handling of the vehicle. As with any Nielex product, the finish is amazing looking. Learn More

Door stabilizers tailored by Aisin x Nielex for the NA and NB Mazda MX-5 Miata spanning from 1989-2005. The Door Stabilizers elevate the driving experience through a modest enhancement yet with a profound impact on the handling. The door stabilizers effectively bridge the gap between the door and the vehicle body, providing crucial reinforcement to the chassis. This results in heightened stability and improved steering response, transforming the driving dynamics. The Aisin Door Stabilizers, fine-tuned by Nielex for the NA and NB chassis, represent a seamless integration of performance and luxury. Learn More