Build it. Paint it. Ride it.
Design a custom paint job, confirm the fit, and buy a complete mountain bike — all in one place, in one sitting.
Where do you want to begin?
I need a complete bike
Take the 7-question quiz for one personal recommendation, or search complete bikes by discipline, brand, budget, and e-bike status.
Find my bikeI'm building from a frame
Pick a frame and parts. MACH4 checks axle spacing, freehub, bottom bracket, headset, cockpit, brakes, and more.
Open the builderI want custom paint
Open the 3D paint studio to change frame colors, spray accents, place stickers, add text, and export the look.
Customize bikeI need one part
Search a huge parts catalog, filter by spec, and see what is compatible with your build.
Search partsI don't get a standard
Boost vs Super Boost, XD vs Micro Spline, BB shells, headset codes — plain-English fit guides.
Open the dictionaryPick a colorway before the build gets real.
Start with frame paint, add a sharp accent, choose a finish, then open the full 3D customizer to spray, sticker, type, upload a model, and export the bike.
Four builds worth a look.
A cross-section of what riders are matching to most this season — trail, e-MTB, gravel, and enduro.
Live now — while it lasts.
Small batch. Field-tested. Numbered. When these sell out, they are gone for good.
What the trail — and the paint studio — look like in use.
A look at the kind of builds, colorways, and rides MACH4 is for. Send us yours and we may feature it here.
A clearer path from research to ride.
1. Choose a direction
Use the quiz if you are unsure, or search the catalog if you already know the discipline, brand, or e-bike requirement.
2. Check the standards
For custom builds, start with a frame and let the builder flag fit, conflicts, adapters, and specs you should verify.
3. Buy from the source
Product buttons route through MACH4 tracking and then go straight to Amazon or the retailer product page.
Parts and gear with a reason.
Curated picks are organized by job: protection, drivetrain, paint, and build essentials. Links are direct product links, and affiliate commissions help fund the free tools.
Need a human check?
For custom paint, build advice, or a second opinion on part compatibility, send a note with your frame, riding style, and budget range.
Email Noah