The Bilstein B8 Performance Plus front monotube shock (part 24-249607) is a gas-pressure damper built for the ND-generation Mazda MX-5 Miata. It is a B8 Performance Plus front shock absorber for the 2016+ Mazda MX-5 Miata ND. It uses Bilstein's monotube design for durability and stability. Compared with stock dampers, the B8 Performance Plus line is positioned as a step up for owners running a lowered suspension. It offers a performance boost over OE dampers and is specifically intended to work with aftermarket lowering springs. Its valving is also more aggressive than the factory tune, which helps it control the extra motion that comes with stiffer, lower springs. Bilstein sets valve characteristics for each application rather than using one generic tune. For buyers choosing between this and a budget replacement, that application-specific tuning and a known damper brand are the real reasons to spend more.
Fitment covers the Sport, Club, Grand Touring, RF Club and RF Grand Touring trims, and the upper mount is a stem with a clevis or fork at the lower end. Published fitment and design details list the ND Miata for 2016 through 2021. Other listings extend the range to 2025, so confirm the model-year coverage with the manufacturer before ordering. Searches for this part usually include terms like B8 Performance Plus ND front shock, Miata ND lowering spring compatible shock, monotube gas damper, and ND Miata track or autocross front shock upgrade. Owners pairing these with Eibach or RoadsterSport-style springs will want to verify that the damper and spring combination suits their goals.
Yes. The manufacturer's B8 Performance Plus line is intended to pair with aftermarket lowering springs. Published model-year coverage differs between sources, so confirm your exact vehicle year with the manufacturer before ordering.
Owners on user forums report that the factory procedure's requirement to separate the upper ball joint is unnecessary. Instead, they unbolt the upper arm from the subframe, disconnect the sway bar link, and rotate the assembly out.
Yes. Because this is a spring-bearing design, the front job typically calls for a spring compressor, along with a torque wrench and standard sockets.
Front replacement is a moderate-difficulty job. Rated 3/5 for the front, it calls for a torque wrench, a spring compressor, a good socket set, and a jack with stands. A compressed coil spring stores a dangerous amount of energy, and an improperly used spring compressor can cause serious injury. Owners on user forums suggest a simpler removal path than the factory method, but still work with the car fully supported. Tighten suspension bolts with the vehicle's weight on the suspension to avoid binding the bushings. Plan on a professional wheel alignment afterward, since changing the strut or shock alters alignment angles. Confirm torque values against the manufacturer's service data, because published numbers vary between sources.
