G20 / G21
M340i
B58 maintenance, tuning, downpipes and installs.
BMW Performance Specialist — LA
Built to perform.
BMW performance, maintenance, tuning and installs in Los Angeles. G20, G80, G82, G87, G90/G99, B58, S58 and more.
G20 M340iG80 M3G82 M4G87 M2G90 / G99 M5B58S58BM3 TuningDownpipesExhaustSuspensionMaintenanceG20 M340iG80 M3G82 M4G87 M2G90 / G99 M5B58S58BM3 TuningDownpipesExhaustSuspensionMaintenance
BMW-first
Platforms & recent builds.
BMW is the main focus here, especially B58 and S58 cars. These are some of the platforms and builds STM works on most.
G80
M3
S58 maintenance, suspension and exhaust work.
G82
M4
Front mount intakes, carbon and full installs.
G80
M3 Sedan
Downpipes, exhaust setups and stance packages.
G90 / G99
M5 Touring
New-gen M5 work, maintenance and upgrades.
BMW + EURO
More Builds
M2, M5, daily drivers and select Euro cars too.
What we do
Everything your build needs.
Maintenance, performance parts, installs and tuning in one shop.
01 / PERFORMANCE
Power Upgrades
Downpipes, intakes, charge pipes, exhaust, cooling and supporting mods.
02 / TUNING
BM3 Tuning
BM3 flashes and setup for stock or modified cars. Authorized BM3 Dealer.
03 / MAINTENANCE
Maintenance
Oil changes, spark plugs, fluids, transmission service, motor mounts and more.
04 / INSTALLS
Installs
Suspension, spacers, carbon, exhaust and other bolt-on parts.
Popular services
Starting at.
Quick pricing for some common jobs. Exact price depends on the car, parts and job.
Popular BMW services & installs
Need an exact price? Send your year, model and what you want done.
Maintenance · B58
Spark Plugs
Starting at
$200
B58 spark plug service.
Maintenance · S58
Spark Plugs
Starting at
$250
S58 spark plug service.
Labor Only · B58
Downpipe Install
Starting at
$100
Labor only. Customer-supplied downpipe.
Labor Only · S58
Downpipe Install
Starting at
$250
Labor only. Customer-supplied downpipes.
Exhaust · G20/G22 B58
Exhaust Package
Starting at
$1,750
Installed package starting price.
Carbon · G80/G82
Dry Carbon Hood
Starting at
$1,850
Installed starting price.
Carbon · G20/G80
CSL Dry Carbon Trunk
Starting at
$1,850
Installed starting price.
Performance · B58
Charge Pipe
Starting at
$350
B58 charge pipe starting price.
Starting prices are estimates and can change based on vehicle, parts, tax, fluids, hardware and extra labor.
@stmperformancee
Recent work.
Cars and installs from the shop. Tap a photo to see more on Instagram.
FAQ
Quick answers.
Still have a question? Call or text us at (424) 310-2318.
Do I need an appointment?
Appointments are recommended. Text or call us first so we can make sure we have time for the job.
Can I bring my own parts?
Yes. Choose “Labor Only” on the quote page and send us the brand and exact part you already have.
Do you only work on BMWs?
BMW is our main focus, but we also work on other Euro and select cars. Send us the year, make and model.
Do you do BM3 tuning?
Yes. STM Performance is an Authorized BM3 Dealer. Contact us with your car and current mods for pricing.
Do you do maintenance too?
Yes. Oil changes, spark plugs, fluids, transmission service, motor mounts and other maintenance are available.
How do I get an exact price?
Use the quote page or text us your year, model, service and whether you need parts or labor only.
Can a job be done the same day?
Some jobs can be. It depends on the service, parts and schedule. Call or text us to check availability.
What should I send for a diagnostic?
Send the car, what it is doing, any warning lights or codes, and anything that was recently changed or installed.
Los Angeles
Directions.
STM Performance — 1637 Staunton Ave, Los Angeles, CA 90021.
STM Performance
1637 Staunton Ave
Los Angeles, CA 90021
Call or text before heading over if you need a quote or want to check availability.
Phone(424) 310-2318
Instagram@stmperformancee
Los Angeles, California
Need a quote?
Send us your year, model, what you need and whether you want parts + install or labor only.