Free Shipping on All Orders to The Lower 48 States!
From the Trail
Installation walkthroughs, buyer's guides, and trail tips from the 4x4ModSource team in Scottsdale, AZ. Real content written by real UTV riders.
Step-by-step installation guide for plastic lower door inserts on the 2014–2023 Polaris RZR XP 1000. Tool list, torque specs, and pro tips from our team.
Read Article
Trying to decide between plastic and aluminum lower doors for your RZR or X3? We break down durability, weight, cost, and the best use case for each so you can make the right call.
Read Article
The Can-Am Maverick X3 is one of the best UTVs ever built — and it gets even better with the right aftermarket upgrades. Here are our top 5 picks for 2026.
Read Article
Not all RZR rear windshields are the same. Here's what you need to know about polycarbonate vs. acrylic, hard coat vs. standard, and which fitment works for your specific model.
Read Article
Desert riding in Arizona is world-class — and unforgiving. Here's the complete safety gear checklist every UTV rider should run before heading out into the Sonoran Desert.
Read Article
The Polaris RZR Pro XP is a performance machine right off the lot — and the right aftermarket parts take it even further. Here are the top upgrades our team recommends for 2024.
Read ArticleStep-by-step installation guide for lower door inserts on the 2017–2024 Can-Am Maverick X3 and X3 Max. Tool list, alignment tips, and what to watch out for on the X3's unique door frame.
Read ArticleThe Honda Talon 1000X is one of the most underrated sport UTVs on the market. Here are the five modifications that make it truly trail-ready — based on what our riders actually run.
Read ArticleBoth machines are excellent trail rigs — but they have different strengths, different weak points, and different mod priorities. Here's how to think about building each one.
Read ArticleHalf windshield or full? Polycarbonate or acrylic? Vented or solid? This guide breaks down every variable so you can choose the right windshield for your ride, your terrain, and your budget.
Read Article
Not all fender flares are made the same. Here's an honest comparison of the three materials — what each does well, what each costs, and which is right for your riding style and terrain.
Read Article