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Notes
The Mazda Spec Miata NB1 represents the second generation (1999-2000 model years) MX-5 Miata prepared to SCCA Spec Miata class regulations. Spec Miata is one of the most popular and competitive one-make racing classes in North America, emphasizing driver skill over budget and modifications. The NB1 Spec Miata features a 1.8-liter inline-four engine producing approximately 130 horsepower in race-trim, with a minimum weight requirement of 2,400 pounds as part of the series' balance of performance system.
These cars feature largely stock engines built to specific tolerances outlined in the rulebook, along with Penske adjustable coil-over suspension (since 2019), Eibach springs, adjustable sway bars, and spec Hoosier SM7.5 tires for dry conditions. NB models must run a throttle restrictor to equalize performance across different Miata generations. The strict control formula ensures close, affordable racing where driving skill and setup knowledge determine results rather than budget. Spec Miata has become a proving ground for aspiring professional drivers and remains one of the most accessible paths into wheel-to-wheel road racing.
OEM Specs
engine Description
1.8L NA I4 (BP-4W )
drive Type
RWD
0-60 MPH
6.8 SECs
TOP SPEED KPH
193
PRICE (MSRP) USD
$35,000
gearbox
5-SPEED MANUAL
torque
119 N.M
Model Years
1999
YEAR NOTES
1999: 1999-2000
Compare to
Popular Mazda Spec Miata MX-5 NB1 Mods by Level
From 15 documented buildsTrendsSpec Miata NB1 builds consistently feature Toyo RR tires, Penske or Bilstein suspension, and Racing Beat exhaust components. As builds escalate, owners add Hawk DTC-60 brakes, OS Giken LSDs, and Mazda OEM 2001 VVT longblocks, often paired with AEM EMS or superchargers. Full race builds include Nine Lives Racing aero and custom roll cages.
Race
15 builds
Tires
Toyo Proxes RR6· Hoosier SM7.52· Nitto NT012· Nankang CR-S1· Hoosier R61
Suspension
Penske Shocks2· Bilstein Spec Miata2· Racing Beat Front Sway Bar1· 5X Racing Rear Sway Bar1· Feal 441 Coilovers1
Brakes
Hawk DTC-601· StopTech Front Big Brake Kit1
Intake/Exhaust
Racing Beat Exhaust Headers1· Racing Beat Power Pulse Midpipe1· Racing Beat Race Muffler1· Mazda Squaretop Intake Manifold1· Skunk2 64mm Throttle Body1
Power/Tune
Mazda BP-Z31· AEM EMS1· Supercharger1
Aero
Nine Lives Racing Medium Downforce Kit1
Drivetrain
OS Giken LSD1· Blueprinted Drivetrain1· Torsen LSD1
Weight
Stripped Interior3
Other
Full Roll Cage2· Racing Seat2· Custom Roll Cage2· Multi-Point Racing Harness2· Custom Full Roll Cage1
Lap Times
| Time | Track | Car | Mod | Driver | Tire | Lap Date | Date Added | vs Predict | Pace |
|---|---|---|---|---|---|---|---|---|---|
| 1:28.9 | Heartland Motorsports Park (Nascar A CCW) | Race | 29 May, 2019 | 01 Oct, 2021 | -6.48s | +7.48% | |||
| 1:30.9 | Watkins Glen International (Short Circuit w/ Inner Loop) | Race | 15 Sep, 2025 | 25 Sep, 2025 | -4.99s | +5.64% | |||
| 1:19.4 | Summit Point Motorsports Park (Jefferson Extended Circuit CCW) | Race | 31 Oct, 2016 | 14 Feb, 2026 | -4.27s | +5.50% | |||
| 1:30.8 | Atlanta Motorsports Park (CCW) | Race | 19 May, 2022 | 24 Jan, 2026 | -4.76s | +5.37% | |||
| 1:36.6 | New Jersey Motorsports Park-NJMP (Thunderbolt w/Chicane T3 (Pre 2024)) | Race | 28 Oct, 2021 | 25 Jun, 2022 | -4.81s | +5.11% | |||
| 1:10.4 | Rockingham Speedway (Rock GP) | Race | 15 Oct, 2022 | 06 Feb, 2024 | -3.17s | +4.58% | |||
| 1:21.7 | Motorsport Ranch-MSR Cresson (1.7 CW) | Race | 24 Jan, 2025 | 15 Apr, 2025 | -3.6s | +4.50% | |||
| 1:14.9 | Pineview Run | Race | 06 Sep, 2020 | 19 Jan, 2026 | -3.04s | +4.19% | |||
| 2:06.2 | Virginia International Raceway - VIR (Full Course) | Race | 13 Oct, 2022 | 02 Sep, 2024 | -4.91s | +4.00% | |||
| 2:30.5 | Road America (Current) | Race | 02 Aug, 2025 | 22 Aug, 2025 | -5.36s | +3.65% | |||
| 1:39.4 | Laguna Seca (Pre 2023) | Race | 09 Oct, 2017 | 17 Jan, 2026 | -3.41s | +3.49% | |||
| 1:28.3 | Driveway Austin Motorsports (Grand Prix Course L3) | Race | 07 Oct, 2015 | 15 Sep, 2021 | -2.68s | +3.12% | |||
| 1:37.9 | New York Safety Track NYST | Race | 13 Sep, 2021 | 07 Feb, 2026 | -2.88s | +3.04% | |||
| 2:44.3 | Ozark International Raceway | Race | 05 Jun, 2022 | 13 Oct, 2024 | -4.59s | +2.87% | |||
| 1:38.0 | Road Atlanta | Race | 01 May, 2012 | 17 Jan, 2026 | -2.56s | +2.69% | |||
| 1:40.8 | Mid-Ohio Sports Car Course (Club Circuit) | Race | 20 Jun, 2025 | 16 Jul, 2025 | -2.3s | +2.35% | |||
| 3:19.2 | Spring Mountain Motor Resort (Andretti - Option C 4 Mile CW) | Race | 16 Feb, 2014 | 09 Jan, 2026 | -4.48s | +2.31% | |||
| 1:25.2 | Hallett Motor Racing Circuit (CCW) | Race | 15 Sep, 2012 | 15 Jun, 2021 | -1.84s | +2.21% | |||
| 1:40.1 | Homestead-Miami Speedway (Road Course) | Race | 31 Jan, 2025 | 10 Jan, 2026 | -2.13s | +2.19% | |||
| 2:29.7 | NCM Motorsports Park-National Corvette Museum (Full-CW) | Race | 26 Mar, 2025 | 28 Oct, 2025 | -3.06s | +2.10% | |||
| 2:40.3 | Spring Mountain Motor Resort (Mansell C 3.4 Mile) | Race | 08 Oct, 2013 | 17 Jan, 2026 | -3.22s | +2.06% | |||
| 1:21.5 | Sebring (Club Circuit) | Race | 09 Jun, 2025 | 28 Jun, 2025 | -1.61s | +2.03% | |||
| 2:22.4 New | Area 27 | Race | 15 Jun, 2026 | 25 Jun, 2026 | -2.68s | +1.95% | |||
| 1:26.6 | Willow Springs Raceway (Streets CCW Pre 2022) | Race | 02 Jul, 2017 | 18 Jan, 2026 | -1.49s | +1.76% | |||
| 2:45.0 | Autobahn Country Club (Full Circuit) | Race | 26 Jun, 2025 | 10 Aug, 2025 | -2.73s | +1.70% | |||
| 1:01.0 | Lime Rock Park (CW) | Race | 26 Oct, 2025 | 04 Nov, 2025 | -1s | +1.67% | |||
| 1:41.6 | Mid-Ohio Sports Car Course (Club Circuit) | Race | 12 Oct, 2025 | 04 Mar, 2026 | -1.49s | +1.51% | |||
| 1:52.0 | Arizona Motorsports Park - AMP (CCW) | Race | 14 Jan, 2023 | 22 Jan, 2026 | -1.45s | +1.33% | |||
| 1:54.2 | Sonoma Raceway (Full) | Race | 01 May, 2016 | 18 Jan, 2026 | -1.17s | +1.05% | |||
| 2:01.6 | Buttonwillow Raceway (13CW) | Race | 04 Dec, 2016 | 18 Jan, 2026 | -0.8s | +0.68% | |||
| 1:23.6 | Motorsport Ranch-MSR Cresson (1.7 CCW) | Race | 18 Jan, 2023 | 05 Feb, 2023 | -0.36s | +0.45% | |||
| 1:41.9 | Homestead-Miami Speedway (Road Course) | Race | 01 May, 2025 | 28 Jun, 2025 | -0.43s | +0.44% | |||
| 1:02.0 | Lime Rock Park (CW) | Race | 22 Sep, 2018 | 20 Jan, 2026 | -0.25s | +0.42% | |||
| 53.0 | Circuit Grand Bayou (1.1 Mile) | Race | 22 May, 2022 | 17 Jan, 2026 | -0.21s | +0.41% | |||
| 1:21.9 | Blackhawk Farms Raceway | Race | 08 Oct, 2022 | 31 Jan, 2024 | -0.29s | +0.37% | |||
| 2:21.8 | NCM Motorsports Park-National Corvette Museum (Mulsanne Chicane) | Race | 20 Jul, 2015 | 18 Jan, 2026 | -0.27s | +0.20% | |||
| 1:43.4 | Summit Point Motorsports Park (Shenandoah Circuit CCW) | Race | 16 Jul, 2017 | 17 Jan, 2026 | -0.14s | +0.14% | |||
| 1:33.4 | New Jersey Motorsports Park-NJMP (Thunderbolt) | Race | 14 Jul, 2025 | 15 Jul, 2025 | -0.11s | +0.13% | |||
| 1:02.3 | Lime Rock Park (CW) | Race | 21 Jul, 2025 | 20 Jan, 2026 | -0.07s | +0.12% | |||
| 1:28.3 | Willow Springs Raceway (Streets Pre 2022) | Race | 08 Sep, 2016 | 18 Jan, 2026 | -0.09s | +0.11% | |||
| 2:04.1 | Chuckwalla Valley Raceway (CW) | Race | 19 Nov, 2017 | 18 Jan, 2026 | -0.03s | +0.03% | |||
| 1:55.0 | Arizona Motorsports Park - AMP (Main Track - CW) | Race | 03 Feb, 2021 | 23 Jan, 2026 | +0.03s | -0.03% | |||
| 1:55.5 | Sonoma Raceway (Full) | Race | 06 Jun, 2015 | 17 Jan, 2026 | +0.05s | -0.05% | |||
| 2:11.4 | Eagles Canyon Raceway (2.7 miles CCW) | Race | 27 Feb, 2025 | 15 Apr, 2025 | +0.31s | -0.25% | |||
| 1:35.9 | Willow Springs Raceway (Big Willow) | Race | 20 Nov, 2016 | 18 Jan, 2026 | +0.24s | -0.26% | |||
| 2:04.7 | Chuckwalla Valley Raceway (CW) | Race | 11 Apr, 2017 | 18 Jan, 2026 | +0.31s | -0.26% | |||
| 1:24.3 | Motorsport Ranch-MSR Cresson (1.7 CCW) | Race | 27 Jan, 2019 | 06 Aug, 2021 | +0.22s | -0.27% | |||
| 2:02.8 | Buttonwillow Raceway (13CW) | Race | 28 Jan, 2017 | 18 Jan, 2026 | +0.33s | -0.28% | |||
| 1:01.7 | Autodrome St-Eustache | Race | 06 Aug, 2017 | 18 Jan, 2026 | +0.22s | -0.38% | |||
| 2:32.8 | Motorsport Ranch-MSR Cresson (3.1) | Race | 25 Aug, 2019 | 05 Aug, 2021 | +0.56s | -0.38% | |||
| 1:43.7 | Laguna Seca (Pre 2023) | Race | 07 Jul, 2013 | 15 Jun, 2021 | +0.55s | -0.55% | |||
| 2:12.0 | Virginia International Raceway - VIR (Full Course) | Race | 11 Apr, 2025 | 15 Apr, 2025 | +0.74s | -0.58% | |||
| 2:05.0 | Chuckwalla Valley Raceway (CW) | Race | 18 Apr, 2024 | 23 Jan, 2026 | +0.75s | -0.62% | |||
| 1:52.1 | Palmer Motorsports Park (CCW) | Race | 15 Jul, 2022 | 08 Sep, 2022 | +0.68s | -0.63% | |||
| 1:24.7 | Motorsport Ranch-MSR Cresson (1.7 CCW) | Race | 20 Mar, 2025 | 11 Jun, 2025 | +0.61s | -0.75% | |||
| 1:29.1 | Portland International Raceway - PIR (w/ Chicane) | Race | 13 Oct, 2013 | 17 Jan, 2026 | +0.65s | -0.76% | |||
| 1:22.9 | Blackhawk Farms Raceway | Race | 23 Feb, 2025 | 20 Mar, 2025 | +0.64s | -0.80% | |||
| 2:12.1 | Eagles Canyon Raceway (2.7 miles CCW) | Race | 29 Apr, 2021 | 12 Jan, 2026 | +1.1s | -0.86% | |||
| 2:10.6 | Thunderhill (East 3 Mile w/ Cyclone) | Race | 18 Jun, 2022 | 18 Jan, 2026 | +1.18s | -0.93% | |||
| 2:12.3 | Eagles Canyon Raceway (2.7 miles CCW) | Race | 29 Oct, 2017 | 17 Jan, 2026 | — | ||||
| 1:39.0 | Autobahn Country Club (South Circuit) | Race | 09 Jun, 2025 | 29 Jul, 2025 | +0.93s | -0.97% | |||
| 2:05.5 | Chuckwalla Valley Raceway (CW) | Race | 06 Apr, 2014 | 18 Jan, 2026 | +1.27s | -1.04% | |||
| 1:02.5 | Sanair Super Speedway (CW) | Race | 01 Jan, 2017 | 17 Jan, 2026 | +0.64s | -1.06% | |||
| 1:03.4 | Lime Rock Park (CW) | Race | 13 Jul, 2025 | 18 Jan, 2026 | +0.65s | -1.07% | |||
| 2:10.6 | Thunderhill (East 3 Mile w/ Cyclone) | Race | 01 Nov, 2024 | 18 Jan, 2026 | +1.37s | -1.08% | |||
| 2:12.4 | Eagles Canyon Raceway (2.7 miles CCW) | Race | 30 Oct, 2021 | 18 Sep, 2022 | +1.4s | -1.09% | |||
| 1:43.5 | Homestead-Miami Speedway (Road Course) | Race | 11 Nov, 2025 | 04 Mar, 2026 | +1.16s | -1.15% | |||
| 1:23.2 | Roebling Road Raceway (Road Course) | Race | 18 Sep, 2022 | 06 Feb, 2024 | +0.96s | -1.19% | |||
| 1:25.3 | Motorsport Ranch-MSR Cresson (1.7 CCW) | Race | 17 Mar, 2013 | 05 Aug, 2021 | +1.06s | -1.28% | |||
| 2:11.1 | Thunderhill (East 3 Mile w/ Cyclone) | Race | 01 Oct, 2025 | 03 Mar, 2026 | +1.67s | -1.31% | |||
| 1:26.7 | Summit Point Motorsports Park (Main) | Race | 26 Apr, 2025 | 20 Jan, 2026 | +1.13s | -1.34% | |||
| 1:26.7 | Summit Point Motorsports Park (Main) | Race | 26 Apr, 2025 | 07 May, 2025 | +1.13s | -1.34% | |||
| 1:21.4 | Putnam Park Road Course | Race | 14 May, 2012 | 03 Dec, 2022 | +1.08s | -1.37% | |||
| 2:50.5 | Autobahn Country Club (Full Circuit) | Race | 01 Nov, 2025 | 12 May, 2026 | +2.35s | -1.42% | |||
| 2:15.4 | Watkins Glen International (Full Circuit w/ Loop) | Race | 30 Jun, 2025 | 04 Jul, 2025 | +1.88s | -1.43% | |||
| 1:07.0 | Driveway Austin Motorsports (Elevation Course L2 CCW) | Race | 24 Oct, 2012 | 14 Sep, 2021 | +0.94s | -1.47% | |||
| 1:26.8 | Summit Point Motorsports Park (Main) | Race | 22 Sep, 2025 | 20 Jan, 2026 | +1.27s | -1.51% | |||
| 1:19.2 | Shannonville Motorsport Park (Pro) | Race | 01 Jan, 2017 | 17 Jan, 2026 | +1.17s | -1.53% | |||
| 1:23.5 | Roebling Road Raceway (Road Course) | Race | 03 Sep, 2025 | 04 Sep, 2025 | +1.26s | -1.55% | |||
| 1:30.6 | Hallett Motor Racing Circuit (CW) | Race | 09 Jun, 2025 | 11 Jun, 2025 | +1.37s | -1.55% | |||
| 1:26.9 | Summit Point Motorsports Park (Main) | Race | 11 Aug, 2018 | 18 Jan, 2026 | +1.39s | -1.65% | |||
| 1:51.6 | MSR Houston (CCW) | Race | 15 Apr, 2025 | 11 Jun, 2025 | +1.87s | -1.72% | |||
| 1:45.7 | Barber Motorsports Park | Race | 12 Feb, 2014 | 21 Jun, 2021 | +1.82s | -1.77% | |||
| 1:10.0 | Pikes Peak International Raceway | Race | 24 Jun, 2018 | 23 Jan, 2026 | +1.2s | -1.79% | |||
| 2:26.2 | NCM Motorsports Park-National Corvette Museum (Mulsanne Chicane) | Race | 21 Mar, 2025 | 10 Jun, 2025 | +2.64s | -1.87% | |||
| 1:23.9 | Roebling Road Raceway (Road Course) | Race | 15 Jan, 2025 | 20 May, 2025 | +1.66s | -2.03% | |||
| 2:03.9 New | Buttonwillow Raceway (Circuit) | Race | 05 May, 2026 | 28 May, 2026 | +2.47s | -2.07% | |||
| 1:14.9 | Autobahn Country Club (North Circuit) | Race | 05 Apr, 2023 | 20 Mar, 2025 | — | ||||
| 1:48.0 | GingerMan Raceway (Extended Course 10B CW) | Race | 17 Jun, 2025 | 28 Oct, 2025 | +2.35s | -2.24% | |||
| 2:52.9 | Ozark International Raceway | Race | 26 Jun, 2022 | 29 Jan, 2026 | +3.83s | -2.28% | |||
| 1:43.2 | Road Atlanta | Race | 09 Mar, 2025 | 31 May, 2025 | +2.41s | -2.40% | |||
| 1:45.7 | Mid-Ohio Sports Car Course (Club Circuit) | Race | 27 May, 2025 | 28 Oct, 2025 | +2.48s | -2.41% | |||
| 1:15.4 | Autobahn Country Club (North Circuit) | Race | 24 Jul, 2025 | 10 Aug, 2025 | +1.76s | -2.42% | |||
| 2:03.1 | Buttonwillow Raceway (Circuit) | Race | 17 Mar, 2025 | 29 Jan, 2026 | +2.9s | -2.42% | |||
| 2:12.3 | Buttonwillow Raceway (25CW) | Race | 21 Mar, 2026 | 05 Apr, 2026 | +3.13s | -2.45% | |||
| 1:55.8 | Sonoma Raceway (Long) | Race | 01 Sep, 2025 | 04 Sep, 2025 | +2.77s | -2.46% | |||
| 1:56.4 | Sonoma Raceway (Long) | Race | 15 Jul, 2017 | 18 Jan, 2026 | +2.89s | -2.56% | |||
| 3:37.1 | Thunderhill (5 Mile Cyclone w/ West Bypass) | Race | 11 May, 2023 | 16 Jun, 2023 | +5.61s | -2.66% | |||
| 1:46.0 | Laguna Seca (Pre 2023) | Race | 13 Jun, 2010 | 18 Jan, 2026 | +2.82s | -2.72% | |||
| 1:29.0 | Summit Point Motorsports Park (Main) | Race | 20 Mar, 2026 | 25 Mar, 2026 | +2.38s | -2.79% |
Top Modified Spec Miata MX-5 NB1
| Year | Driver Name | Mod | Horsepower | Tire | Tire Size | Vs Predict |
|---|---|---|---|---|---|---|
| 1999 | Paul Raymond | Race | — | 40 Proxes RR | — | -24.91s |
| 1999 (w/SM7) | Builder | Race | 140 | 40 SM7 | 205/50/15 | -12.98s |
| 1999 | Darren Linck | Race | — | 40 Proxes RR | 205/50/15 | -3.57s |
| 1999 | Eric Prill | Race | — | 40 SM7 | 205/50/15 | -2.42s |
| 1999 (w/RR) | JT Racing | Race | — | 40 Proxes RR | 205/50/15 | -0.7s |
| 1999 (w/VR) | Alyssa Merrill | Race | 125 | 200 Ventus RS3 | 205/50/15 | -0.6s |
| 1999 (w/SM7) | milkmandan | Race | — | 40 SM7 | 205/50/15 | -0.48s |
| 1999 (w/ProxesRR) | TurtleMcSmash | Race | — | 40 Proxes RR | 205/50/15 | +0.36s |
| 1999 (w/RR) | David Ardoin | Race | — | 40 Proxes RR | 205/50/15 | +0.42s |
| 1999 (w/ProxesRR) | Alexander Doss | Race | — | 40 Proxes RR | 205/50/15 | +1.32s |