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Mazda

Spec Miata MX-5 NB1

6.8s0–60 MPH
193TOP SPEED KPH
140HORSEPOWER

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.

Rank
horsepower
140
WEIGHT KG
1,089
Power to Weight
0.13
CURRENT VALUE
$49,000

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 builds

TrendsSpec 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 -6.52s +7.53%
1:30.9 Watkins Glen International (Short Circuit w/ Inner Loop) Race 15 Sep, 2025 25 Sep, 2025 -5.04s +5.69%
1:19.4 Summit Point Motorsports Park (Jefferson Extended Circuit CCW) Race 31 Oct, 2016 14 Feb, 2026 -4.31s +5.55%
1:14.9 Pineview Run Race 06 Sep, 2020 19 Jan, 2026 -3.93s +5.48%
1:30.8 Atlanta Motorsports Park (CCW) Race 19 May, 2022 24 Jan, 2026 -4.8s +5.42%
1:36.6 New Jersey Motorsports Park-NJMP (Thunderbolt w/Chicane T3 (Pre 2024)) Race 28 Oct, 2021 25 Jun, 2022 -4.85s +5.16%
1:10.4 Rockingham Speedway (Rock GP) Race 15 Oct, 2022 06 Feb, 2024 -3.16s +4.56%
1:21.7 Motorsport Ranch-MSR Cresson (1.7 CW) Race 24 Jan, 2025 15 Apr, 2025 -3.63s +4.55%
1:37.9 New York Safety Track NYST Race 13 Sep, 2021 07 Feb, 2026 -3.97s +4.24%
2:06.2 Virginia International Raceway - VIR (Full Course) Race 13 Oct, 2022 02 Sep, 2024 -4.97s +4.05%
2:30.5 Road America (Current) Race 02 Aug, 2025 22 Aug, 2025 -5.43s +3.70%
1:39.4 Laguna Seca (Pre 2023) Race 09 Oct, 2017 17 Jan, 2026 -3.47s +3.56%
1:28.3 Driveway Austin Motorsports (Grand Prix Course L3) Race 07 Oct, 2015 15 Sep, 2021 -2.73s +3.17%
2:44.3 Ozark International Raceway Race 05 Jun, 2022 13 Oct, 2024 -4.66s +2.92%
1:38.0 Road Atlanta Race 01 May, 2012 17 Jan, 2026 -2.62s +2.75%
1:25.2 Hallett Motor Racing Circuit (CCW) Race 15 Sep, 2012 15 Jun, 2021 -2.1s +2.54%
1:40.8 Mid-Ohio Sports Car Course (Club Circuit) Race 20 Jun, 2025 16 Jul, 2025 -2.35s +2.40%
2:22.4 New Area 27 Race 15 Jun, 2026 25 Jun, 2026 -3.25s +2.37%
3:19.2 Spring Mountain Motor Resort (Andretti - Option C 4 Mile CW) Race 16 Feb, 2014 09 Jan, 2026 -4.57s +2.36%
1:40.1 Homestead-Miami Speedway (Road Course) Race 31 Jan, 2025 10 Jan, 2026 -2.18s +2.24%
2:29.7 NCM Motorsports Park-National Corvette Museum (Full-CW) Race 26 Mar, 2025 28 Oct, 2025 -3.13s +2.15%
2:40.3 Spring Mountain Motor Resort (Mansell C 3.4 Mile) Race 08 Oct, 2013 17 Jan, 2026 -3.32s +2.13%
1:21.5 Sebring (Club Circuit) Race 09 Jun, 2025 28 Jun, 2025 -1.65s +2.08%
1:26.6 Willow Springs Raceway (Streets CCW Pre 2022) Race 02 Jul, 2017 18 Jan, 2026 -1.55s +1.83%
2:45.0 Autobahn Country Club (Full Circuit) Race 26 Jun, 2025 10 Aug, 2025 -2.81s +1.75%
1:01.0 Lime Rock Park (CW) Race 26 Oct, 2025 04 Nov, 2025 -1.01s +1.70%
1:41.6 Mid-Ohio Sports Car Course (Club Circuit) Race 12 Oct, 2025 04 Mar, 2026 -1.54s +1.56%
1:52.0 Arizona Motorsports Park - AMP (CCW) Race 14 Jan, 2023 22 Jan, 2026 -1.5s +1.38%
1:54.2 Sonoma Raceway (Full) Race 01 May, 2016 18 Jan, 2026 -1.51s +1.37%
2:01.6 Buttonwillow Raceway (13CW) Race 04 Dec, 2016 18 Jan, 2026 -0.89s +0.76%
1:23.6 Motorsport Ranch-MSR Cresson (1.7 CCW) Race 18 Jan, 2023 05 Feb, 2023 -0.39s +0.49%
1:41.9 Homestead-Miami Speedway (Road Course) Race 01 May, 2025 28 Jun, 2025 -0.48s +0.49%
1:02.0 Lime Rock Park (CW) Race 22 Sep, 2018 20 Jan, 2026 -0.27s +0.46%
53.0 Circuit Grand Bayou (1.1 Mile) Race 22 May, 2022 17 Jan, 2026 -0.21s +0.42%
1:21.9 Blackhawk Farms Raceway Race 08 Oct, 2022 31 Jan, 2024 -0.33s +0.42%
1:55.5 Sonoma Raceway (Full) Race 06 Jun, 2015 17 Jan, 2026 -0.31s +0.28%
2:21.8 NCM Motorsports Park-National Corvette Museum (Mulsanne Chicane) Race 20 Jul, 2015 18 Jan, 2026 -0.34s +0.25%
1:01.7 Autodrome St-Eustache Race 06 Aug, 2017 18 Jan, 2026 -0.13s +0.22%
1:43.4 Summit Point Motorsports Park (Shenandoah Circuit CCW) Race 16 Jul, 2017 17 Jan, 2026 -0.19s +0.19%
1:28.3 Willow Springs Raceway (Streets Pre 2022) Race 08 Sep, 2016 18 Jan, 2026 -0.15s +0.18%
1:02.3 Lime Rock Park (CW) Race 21 Jul, 2025 20 Jan, 2026 -0.09s +0.16%
2:04.1 Chuckwalla Valley Raceway (CW) Race 19 Nov, 2017 18 Jan, 2026 -0.09s +0.08%
1:55.0 Arizona Motorsports Park - AMP (Main Track - CW) Race 03 Feb, 2021 23 Jan, 2026 -0.02s +0.02%
1:33.4 New Jersey Motorsports Park-NJMP (Thunderbolt) Race 14 Jul, 2025 15 Jul, 2025 +0.06s -0.07%
1:35.9 Willow Springs Raceway (Big Willow) Race 20 Nov, 2016 18 Jan, 2026 +0.17s -0.19%
2:04.7 Chuckwalla Valley Raceway (CW) Race 11 Apr, 2017 18 Jan, 2026 +0.23s -0.19%
2:11.4 Eagles Canyon Raceway (2.7 miles CCW) Race 27 Feb, 2025 15 Apr, 2025 +0.25s -0.20%
1:24.3 Motorsport Ranch-MSR Cresson (1.7 CCW) Race 27 Jan, 2019 06 Aug, 2021 +0.18s -0.22%
2:02.8 Buttonwillow Raceway (13CW) Race 28 Jan, 2017 18 Jan, 2026 +0.27s -0.23%
2:32.8 Motorsport Ranch-MSR Cresson (3.1) Race 25 Aug, 2019 05 Aug, 2021 +0.49s -0.33%
1:43.7 Laguna Seca (Pre 2023) Race 07 Jul, 2013 15 Jun, 2021 +0.5s -0.50%
2:12.0 Virginia International Raceway - VIR (Full Course) Race 11 Apr, 2025 15 Apr, 2025 +0.68s -0.53%
2:05.0 Chuckwalla Valley Raceway (CW) Race 18 Apr, 2024 23 Jan, 2026 +0.69s -0.57%
1:52.1 Palmer Motorsports Park (CCW) Race 15 Jul, 2022 08 Sep, 2022 +0.63s -0.58%
1:29.1 Portland International Raceway - PIR (w/ Chicane) Race 13 Oct, 2013 17 Jan, 2026 +0.59s -0.69%
1:24.7 Motorsport Ranch-MSR Cresson (1.7 CCW) Race 20 Mar, 2025 11 Jun, 2025 +0.6s -0.73%
1:22.9 Blackhawk Farms Raceway Race 23 Feb, 2025 20 Mar, 2025 +0.6s -0.75%
2:12.1 Eagles Canyon Raceway (2.7 miles CCW) Race 29 Apr, 2021 12 Jan, 2026 +1.02s -0.80%
2:10.6 Thunderhill (East 3 Mile w/ Cyclone) Race 18 Jun, 2022 18 Jan, 2026 +1.12s -0.88%
1:39.0 Autobahn Country Club (South Circuit) Race 09 Jun, 2025 29 Jul, 2025 +0.87s -0.91%
1:07.0 Driveway Austin Motorsports (Elevation Course L2 CCW) Race 24 Oct, 2012 14 Sep, 2021 +0.58s -0.91%
2:12.3 Eagles Canyon Raceway (2.7 miles CCW) Race 29 Oct, 2017 17 Jan, 2026 flag
1:23.2 Roebling Road Raceway (Road Course) Race 18 Sep, 2022 06 Feb, 2024 +0.74s -0.92%
2:05.5 Chuckwalla Valley Raceway (CW) Race 06 Apr, 2014 18 Jan, 2026 +1.2s -0.99%
1:02.5 Sanair Super Speedway (CW) Race 01 Jan, 2017 17 Jan, 2026 +0.61s -1.02%
1:03.4 Lime Rock Park (CW) Race 13 Jul, 2025 18 Jan, 2026 +0.63s -1.03%
2:10.6 Thunderhill (East 3 Mile w/ Cyclone) Race 01 Nov, 2024 18 Jan, 2026 +1.31s -1.03%
2:12.4 Eagles Canyon Raceway (2.7 miles CCW) Race 30 Oct, 2021 18 Sep, 2022 +1.34s -1.04%
1:43.5 Homestead-Miami Speedway (Road Course) Race 11 Nov, 2025 04 Mar, 2026 +1.1s -1.10%
2:26.2 NCM Motorsports Park-National Corvette Museum (Mulsanne Chicane) Race 21 Mar, 2025 10 Jun, 2025 +1.58s -1.13%
1:25.3 Motorsport Ranch-MSR Cresson (1.7 CCW) Race 17 Mar, 2013 05 Aug, 2021 +1.02s -1.23%
1:10.0 Pikes Peak International Raceway Race 24 Jun, 2018 23 Jan, 2026 +0.82s -1.23%
2:11.1 Thunderhill (East 3 Mile w/ Cyclone) Race 01 Oct, 2025 03 Mar, 2026 +1.61s -1.26%
1:23.5 Roebling Road Raceway (Road Course) Race 03 Sep, 2025 04 Sep, 2025 +1.03s -1.28%
1:26.7 Summit Point Motorsports Park (Main) Race 26 Apr, 2025 07 May, 2025 +1.08s -1.29%
1:26.7 Summit Point Motorsports Park (Main) Race 26 Apr, 2025 20 Jan, 2026 +1.09s -1.30%
1:21.4 Putnam Park Road Course Race 14 May, 2012 03 Dec, 2022 +1.04s -1.32%
2:03.9 New Buttonwillow Raceway (Circuit) Race 05 May, 2026 28 May, 2026 +1.57s -1.33%
2:50.5 Autobahn Country Club (Full Circuit) Race 01 Nov, 2025 12 May, 2026 +2.27s -1.37%
2:15.4 Watkins Glen International (Full Circuit w/ Loop) Race 30 Jun, 2025 04 Jul, 2025 +1.82s -1.38%
1:26.8 Summit Point Motorsports Park (Main) Race 22 Sep, 2025 20 Jan, 2026 +1.23s -1.46%
1:19.2 Shannonville Motorsport Park (Pro) Race 01 Jan, 2017 17 Jan, 2026 +1.14s -1.49%
1:30.6 Hallett Motor Racing Circuit (CW) Race 09 Jun, 2025 11 Jun, 2025 +1.36s -1.54%
1:26.9 Summit Point Motorsports Park (Main) Race 11 Aug, 2018 18 Jan, 2026 +1.35s -1.60%
1:45.7 Barber Motorsports Park Race 12 Feb, 2014 21 Jun, 2021 +1.76s -1.71%
1:51.6 MSR Houston (CCW) Race 15 Apr, 2025 11 Jun, 2025 +1.85s -1.71%
2:12.3 Buttonwillow Raceway (25CW) Race 21 Mar, 2026 05 Apr, 2026 +2.18s -1.72%
1:23.9 Roebling Road Raceway (Road Course) Race 15 Jan, 2025 20 May, 2025 +1.44s -1.77%
1:29.0 Summit Point Motorsports Park (Main) Race 20 Mar, 2026 25 Mar, 2026 +1.8s -2.12%
1:14.9 Autobahn Country Club (North Circuit) Race 05 Apr, 2023 20 Mar, 2025 warning
1:48.0 GingerMan Raceway (Extended Course 10B CW) Race 17 Jun, 2025 28 Oct, 2025 +2.3s -2.19%
2:52.9 Ozark International Raceway Race
BDV
26 Jun, 2022 29 Jan, 2026 +3.75s -2.23%
1:43.2 Road Atlanta Race 09 Mar, 2025 31 May, 2025 +2.35s -2.35%
1:15.4 Autobahn Country Club (North Circuit) Race 24 Jul, 2025 10 Aug, 2025 +1.71s -2.36%
1:45.7 Mid-Ohio Sports Car Course (Club Circuit) Race 27 May, 2025 28 Oct, 2025 +2.42s -2.36%
2:03.1 Buttonwillow Raceway (Circuit) Race 17 Mar, 2025 29 Jan, 2026 +2.84s -2.37%
1:55.8 Sonoma Raceway (Long) Race 01 Sep, 2025 04 Sep, 2025 +2.71s -2.41%
1:56.4 Sonoma Raceway (Long) Race 15 Jul, 2017 18 Jan, 2026 +2.81s -2.49%
3:37.1 Thunderhill (5 Mile Cyclone w/ West Bypass) Race 11 May, 2023 16 Jun, 2023 +5.5s -2.61%
1:24.8 Roebling Road Raceway (Road Course) Race 13 Jul, 2024 23 Jan, 2026 +2.17s -2.65%

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 -12.65s
1999 Darren Linck Race 40 Proxes RR 205/50/15 -3.2s
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/SM7) milkmandan Race 40 SM7 205/50/15 -0.48s
1999 (w/VR) Alyssa Merrill Race 125 200 Ventus RS3 205/50/15 -0.43s
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 +0.56s
1999 (w/ProxesRR) Alexander Doss Race 40 Proxes RR 205/50/15 +1.32s
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