1999 Mazda MX-5 Miata
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Project Build

Project Apex — NB Miata Track Build

1999 Mazda MX-5 Miata LS

Mby Marcus Reyes
62%Complete
8/13Mods
142,000 milesMileage
$5,489Invested
4yOwned

A $4,500 Marketplace find with tired suspension and 142k on the clock. Three years and one corner-balanced chassis later it's a weekend track weapon that still drives home on Monday. Built slowly and deliberately — every part earns its place.

Spec Sheet

Factory

Engine1.8L I4
Gearbox5-Speed Manual
DrivetrainRWD
BodyRoadster
TrimLS

By the Numbers

Odometer142,000 miles
Owned4y
Invested$5,489
Mods8 of 13 installed

The Build

EngineNGK Iridium Plugs + Wires
SuspensionTein Flex Z Coilovers
BrakesHawk HPS Front Pads
Wheels & TiresKonig Rewind 15x8 Wheels · Falken Azenis RT660 205/50R15
AeroOEM Hardtop
InteriorMomo Prototipo Wheel + Quick Release
SafetySparco Sprint Bucket Seat
Photos7
Highlight Silver Metallic — top down

Highlight Silver Metallic — top down

Build Progress
62%

8 of 13 mods installed

Engine
1/3
Suspension
1/2
Wheels & Tires
2/2
Brakes
1/2
Aero
1/2
Safety
1/1
Interior
1/1
Modifications8/13 installed
Engine1/3

NGK Iridium Plugs + Wires

NGK · BKR6E-11

Installed

Full tune-up, plugs reading tan.

$62spentest $70

Gates Timing Belt + Water Pump

Gates · TCK228

Planned

Interference engine — overdue. Kit's already on the shelf.

$90est.

BEGi Stage 1 Turbo Kit

BEGi

Wishlist

The endgame. Or supercharger? Still debating.

$3,500est.
Suspension1/2

Tein Flex Z Coilovers

Tein · VSM98-C1SS3

Installed

Street/track spec, -1.5° front camber. Corner-balanced at Mike's.

$950spentest $1,050

Racing Beat Sway Bars (F+R)

Racing Beat

Wishlist

Flatten it out through the esses.

$280est.
Wheels & Tires2/2

Konig Rewind 15x8 Wheels

Konig · RW-15880

Installed

Lightweight +25 offset, square setup.

$560spentest $600

Falken Azenis RT660 205/50R15

Falken · RT660-20550R15

Installed

Square set on the wrap-up wheels for track days.

$720spentest $700
Brakes1/2

Hawk HPS Front Pads

Hawk · HB247F.575

Installed

Greased slide pins, rotors within spec.

$120spentest $110

Hawk HPS Rear Pads

Hawk · HB157F.484

Ordered

Arriving next week — rears getting thin.

$65est.
Aero1/2

OEM Hardtop

Mazda OEM

Installed

Chassis stiffness + track safety. Found used locally.

$450spentest $600

Front Splitter + Canards

DIY

Planned

Home-built splitter for front-end bite.

$180est.
Safety1/1

Sparco Sprint Bucket Seat

Sparco · 008232NR

Installed

FIA bucket on side mounts — dropped seating position.

$330spentest $350
Interior1/1

Momo Prototipo Wheel + Quick Release

Momo · PRO35BK0B

Installed

350mm with NRG quick-release hub.

$205spentest $220
Build Timeline

2026

Jun 6, 2026

Oil Change

Oil Change
141,800 miles30m$46

Apr 25, 2026

Battery Replacement

Electrical
140,800 miles20m$160

Mar 18, 2026

Coilover Install

Suspension
140,100 miles4h$950

Feb 10, 2026

Track Tire Set Mounted

Tires
139,600 miles1h$720

2025

Dec 16, 2025

Front Brake Pads Replacement

Brakes
138,500 miles1h 30m$120

Oct 17, 2025

Differential Fluid Change

Transmission
136,400 miles40m$34

Aug 30, 2025

Spark Plugs & Wires

Engine
135,000 miles45m$62
Issues to Fix
Replace timing belt
Rear brake pads getting thin
Fix AC — not blowing cold
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