Price
Miata driveshafts aren't designed to be rebuildable. Over time, the universal joints will develop a flat spot that can eventually cause vibration problems. Some driveshaft shops claim to be able to replace these joints, with varying levels of success.
This is a brand new driveshaft with universal joints that are designed to be easily replaced (part #7260, typically available locally), even at home. Steel construction, made to the same dimensions as stock. Since Miatas don't break driveshafts, we didn't feel the need to go with a more expensive solution. Dynamically balanced.
Fits 1990-93 manual and automatic cars.
Includes free ground shipping inside the US.