Showing specs for all NA & NB Miatas

Soft top frame & latches

Convertible top frame, set plates and latch hardware; hardtop fasteners are excluded.

Use this checklist to track fasteners you handle. It is not a complete repair procedure or a verified disassembly order. Follow your factory manual for access, support, tightening sequences and inspections. Select your car and check each variant before using a value.

Checklist: https://miatatorque.com/jobs/soft-top/
All NA & NB variants; select your car to narrow the list.

You’ll replace

No replacement list is recorded in these specs. Check the cited procedures for seals, gaskets and single-use hardware.

Fluids & settings

Fluid types, capacities and settings have not been catalogued for this job. Check your factory manual before filling or adjusting.

1. Top frame and set plates

Soft top link bracket bolts
NB 1999–2000
Factory manual14–18 ft·lb19–25 N·m19–25 N·m14–18 ft·lb
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 09–16–8Printed: “19–25 N·m {1.9–2.6 kgf·m, 14–18 ft·lbf}”
Soft top rear window set plate nuts
NA 1990–1993 (B6)
Factory manual7–9 ft·lb8.8–12 N·m8.8–12 N·m7–9 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page S–46Printed: “8.8–12 N·m (0.9–1.2 m-kg, 6.5–8.7 ft-lb)”
Soft top set plate nuts (rear package trim)
NA 1990–1993 (B6)
Factory manual7–9 ft·lb8.8–12 N·m8.8–12 N·m7–9 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page S–62Printed: “8.8–12 N·m (0.9–1.2 m-kg, 6.5–8.7 ft-lb)”
Soft top frame mounting bolts (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual14–18 ft·lb19–25 N·m19–25 N·m14–18 ft·lb
Notes
Seat link brackets over studs with no clearance before tightening.
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 2123Printed: “19—25 N·m {1.9—2.6 kgf·m, 14—18 ft·lbf}”
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 2121Printed: “19—25 {1.9—2.6, 14—18} N·m {kgf·m, ft·lbf}”
Soft top beltline protector nut (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual61–87 in·lbin·lb6.87–9.8 N·m6.87–9.8 N·m61–87 in·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 2121Printed: “6.87—9.80 {70—100, 60.8—86.7} N·m {kgf·cm, in·lbf}”
Soft top set plate nuts (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
DisputedSources disagree. Check every claim below.
Notes
Owner-approved combined envelope of the removal-procedure 7.9–10.7 and top-fabric-procedure 8.9–11.7 N·m ranges; 7.9–11.7 N·m is not printed as a single factory specification. The 1999–2000 manual repeats both ranges for the set plate, so it does not select one over the other.
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 2121: 70–95 in·lb (7.9–10.7 N·m)Printed: “7.9—10.7 {80—110, 69.5—95.4} N·m {kgf·cm, in·lbf}”
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 2138: 79–104 in·lb (8.9–11.7 N·m)Printed: “8.9—11.7 {90—120, 79—104} N·m {kgf·cm, in·lbf}”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 09–16–7: ≈70–95 in·lb (7.9–10.7 N·m)Printed: “7.9—10.7 N·m {80—110 kgf·cm, 69.5—95.4 in·lbf}”Set-plate removal diagram, item 4; visually checked PDF p. 662.
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 09–16–14: ≈79–104 in·lb (8.9–11.7 N·m)Printed: “8.9—11.7 N·m {90—120 kgf·cm, 79—104 in·lbf}”Top-fabric removal diagram, set plate item 1; visually checked PDF p. 669.

2. Latches and strikers

Soft top latch assembly bolt
NA 1990–1993 (B6)
Factory manual3–5 ft·lb4.2–6.2 N·m4.2–6.2 N·m3–5 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page S–62Printed: “4.2–6.2 N·m (0.43–0.63 m-kg, 3.1–4.6 ft-lb)”
Soft top latch screws (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual38–54 in·lbin·lb4.3–6.1 N·m4.3–6.1 N·m38–54 in·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 2125Printed: “4.3—6.1 {43—63, 38—54} N·m {kgf·cm, in·lbf}”
Soft top striker screws (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual87–130 in·lbin·lb9.9–14.7 N·m9.9–14.7 N·m87–130 in·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 2125Printed: “9.9—14.7 {100—150, 87—130} N·m {kgf·cm, in·lbf}”