Pro-Line Rock-Tek 1.9" Rock Crawler Dual Stage Foam & Brass Weight - PRO647900

Smart Weight System

The Rock-Tek 1.9" system redefines crawler performance with a magnetically stabilized, bearing-supported design that keeps 108g per wheel locked at bottom-dead-center instead of spinning with the tire. This dramatically lowers the center of gravity without adding harmful rotating mass, reducing driveline strain while improving throttle response, climbing traction, and side-hill stability. By controlling weight dynamics rather than just adding bulk, it delivers maximum CG reduction per gram where it matters most.

Tuned Control

Built for serious 1.9" crawler setups, Rock-Tek offers a tunable 208g base system with optional add-on weights for precise performance dialing. Drivers can run magnetic stabilization for maximum control or allow free-spin behavior for adaptive terrain response, all while maintaining a clean, scale look inside standard beadlock wheels. With broad compatibility, hidden integration, and advanced weight management, it stands out as a smarter, more efficient upgrade over traditional brass solutions.

Features:

• Magnetically stabilized weight stays at bottom-dead-center
• Bearing-supported design reduces rotating mass
• Improves climbing traction and side-hill stability
• Lowers center of gravity more efficiently per gram
• Tunable 208g base weight system
• Optional add-on weights for precise setup
• Works with most 1.9" beadlock crawler wheels
• Hidden internal design keeps a clean scale look