Fitment
Modify your car with
parts that actually fit.
See only the mods made for your car or bike, with real prices and checked power figures.
Getting started in 5 steps
New here? This is the fast pathChoose a model
Real spec sheets across dozens of car and motorcycle brands — pick a brand, then the model line, then the exact trim your car has.
All trademarks, logos and brand names belong to their respective owners. They are shown only to identify the manufacturer of the vehicles listed, and do not imply sponsorship, endorsement or affiliation.
Tuning shop
Pick a car to see the parts that fit it.
Performance
Stock vs. your build, side by sideGarage
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Versus
Put your build against any car, or two cars against each otherHow we verify specs
What was checked, the rules, and what is still openHow fitment works
Why don't all parts show up for every car?
Every part is tagged to a drivetrain (turbo gas, naturally aspirated, turbo diesel, electric, hybrid) or a body class (sports, sedan, truck, and so on). The shop only shows parts that actually bolt on and work with the model you've selected.
What does "Requires" mean on a part?
Some upgrades depend on another part being installed first — a bigger turbo needs upgraded fueling underneath it, for example. You can still add the part itself right away; the build just stays marked as missing that requirement until you add it too (individually, or with "Add required" to grab everything at once).
How is the 0–60 (or 0–100 km/h) estimate calculated?
It's a rough model based on the power and weight you've added relative to the car's stock figures — a directional estimate for comparing builds, not a guarantee. In Metric mode, the 0–100 km/h figure is approximated from the 0–60 mph time rather than measured separately.
Can I save more than one build?
Yes. Use "Save to Garage" in the build bar to keep a snapshot of your current parts list. Saved builds stay in your Garage in this browser, so they are still there next time you visit on the same device.
Why does changing the BMW model year clear my parts?
Some engines changed completely across generations — the early 320i ran a naturally aspirated engine, while later ones are turbocharged. Switching years can switch the whole fitment category, so the shop clears your selections rather than leaving mismatched parts installed.
What do the warranty badges mean?
Each part is flagged by how much it typically risks your factory warranty: Safe (no meaningful risk), Powertrain risk (may affect engine/drivetrain coverage), Emissions risk (may affect emissions compliance or warranty), and High risk (aggressive engine-internal mods that a dealer is most likely to flag). In the US, the Magnuson-Moss Warranty Act means a dealer can't void your entire warranty just because you installed aftermarket parts — they have to show the specific part actually caused the specific failure. That protection varies elsewhere, so treat these badges as a general guide, not legal advice, and check your manufacturer's terms directly.
How does VIN decode work?
It queries NHTSA's free public vehicle database directly from your browser — no account or key needed. BMW 320 variants (320i, 320d, 320e and their xDrive versions) are matched to the exact engine and year automatically; for any other car it shows every model we have from that brand so you can pick yours. NHTSA's database mainly covers cars sold in the US.
What does the ★ Recommended badge mean?
A handful of parts in each category are flagged as sensible starting points — usually the lowest-risk, best-value option in that category, like a Stage 1 ECU flash before jumping straight to a full turbo swap. It's a starting suggestion, not a claim that every other part is a bad choice.
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