The weight plates have four holes in them, they lay flat on the base plate and attach with four 1/2 in grade 8 bolts. Weight plates can easily be changed in and out with little to no hassle.
Vehicle Applications:
- 1990-2005 Mazda Miata 1.6L NA6 & 1.8L NA8, NB1, & NB2
Vendor: East Street Racing