Bring serious muscle to your next build with this detailed 572 Big Block Base Engine, designed by BlackBoxSTL. Based on the legendary GM 572 crate motor, this multi-part resin engine kit captures the raw power and aggressive styling of one of the most iconic...

Add another level of detail to your 572 build with this custom air intake manifold set from BlackBoxSTL. Designed for maximum flexibility and easy finishing, this set includes all parts separated for smooth painting and assembly. The kit features a precision air intake manifold...

Finish off your engine bay with extra realism using this detailed Brake Fluid Reservoir Set by BlackBoxSTL. Designed for 1/24 and 1/25 scale model cars, this set gives you a quick, clean way to enhance underhood detail—ideal for both factory builds and high-performance customs....

Add realistic underhood detail to your next build with this Assorted Coolant Reservoir Set from BlackBoxSTL. Designed with clean lines and separated caps for easy painting, this set includes four unique reservoir styles to match a wide variety of vehicle types and build styles....

Bring classic muscle car realism under the hood with this Power Brake Booster Set by BlackBoxSTL. Designed in 1/24 and 1/25 scale, this set includes two unique power brake booster styles commonly seen on American muscle cars—perfect for adding authentic detail to your custom...

Add that extra layer of realism to your engine bay with this Assorted Windshield Washer Reservoir Set by BlackBoxSTL. Designed in 1/24 and 1/25 scale, this set includes three distinct reservoir styles, each with separate lids for easy painting, detailing, and placement flexibility. These...

Push your build into wild terrain or street-tuned offroad style with the Bullet Offroad Wheel Pair by BlackBoxSTL. Built for 1/24 and 1/25 scale kits, this rugged setup is available in three offset options and two tire styles, letting you mix and match to...

Take your 572 build to the next level with this aggressive supercharger upgrade set from BlackBoxSTL. Designed to work with the 572 Base Engine (sold separately), this kit packs in all the key components to transform your big block into a supercharged beast —...

Give your 572 build a vintage-meets-race look with this Cross Velocity Stack Set from BlackBoxSTL. Designed for builders who love raw power and old-school attitude, this setup is perfect for custom hot rods, gassers, and drag builds that need a bold engine bay centerpiece....

Add authentic stance and style to your next build with the CS2 Deep Steel Wheel & Tire Set by BlackBoxSTL. This staggered 4-piece set features deep-offset front and rear wheels with different widths for a true-to-life custom look. Perfect for slammed trucks, street rods,...

Classic muscle, meet modern detail. This Dual Carburetor Set from BlackBoxSTL is the perfect upgrade for builders looking to give their 572 engine build a traditional performance look. With multiple filter styles and a clean bolt-on aesthetic, this kit is ideal for street builds,...

Bring classic Euro or JDM flair to your next scale build with this Flat Four Boxer Base Engine by BlackBoxSTL. Designed for 1/24 scale model kits, this compact and highly detailed engine set is perfect for air-cooled customs, vintage racers, or compact off-roaders. Each...

Highly detailed Flat Six Boxer Engine designed by BlackBoxSTL for 1/24 scale model kits and model cars. This complete 6-cylinder boxer engine features multiple separated parts to allow easy painting and realistic assembly. Includes: Dual carburetors with integrated filters Separated caps and covers Separated...

Upgrade your model with the Forg 3D01 Offroad Wheel Set by BlackBoxSTL. This 3-piece wheel set includes two detailed low profile offroad tires, a separated dish, and separated brake components for easy painting and customization. Choose between two tire profiles: regular low profile rubber...