Proline Rock-Tek Wheel Weighting System Crawler 1.9" (x2) PRO647900

🛞 Boost the performance of your Crawler RC car with the Pro-Line Rock-Tek ballast system for 1.9" wheels! Unlike traditional wheel weights that rotate with the rims, this innovative system uses magnetically guided, ball-bearing-mounted brass weights. This design keeps the weights as close as possible to the wheel’s lowest point during rotation, lowering the center of gravity without significantly increasing rotating mass. The result: better stability on climbs, more control on banked turns, and more balanced handling on technical sections.

⚙️ Technical Specifications

• Brand: Pro-Line Racing
• Model: Rock-Tek Tire Weight System
• Part Number: PRO647900
• Type: Weighting system for RC wheels Crawler
• Rim diameter: 1.9"
• Brass weights: 108 g per pair
• Quantity: 2 weight sets
• Magnetically controlled wheel balancing system
• Brass weights mounted on sealed bearings
• Weights maintained near the wheel’s bottom dead center
• Reduction in effective rotating mass compared to traditional ballast systems
• Lower center of gravity
• Improved stability on climbs
• Better balance when cornering on a banked turn
• Optimized weight distribution for off-road driving
• Adjustable ballast configuration
• N35-grade magnets
• Installed inside the tires to maintain a realistic appearance
• Soft, open-cell outer foam inserts included
• Designed for Crawler 1.9" rims approximately 0.8" wide
• Compatible with Crawler tires with an outer diameter of approximately 4.75" to 4.9"
• Optimized for Pro-Line 1.9" Beadlock rims

🧩 Contents

• 2 pairs of brass weights, 108 g each
• 2 Rock-Tek composite cases
• 2 sealed bearings
• 12 N35-grade magnets
• 2 pieces of soft, open-cell foam
• Screws and accessories for attaching the magnets to:
  • Axial SCX10 III with Portal Axle Mounts
  • Axial SCX10 III with straight steering arms 
  • Traxxas TRX-4 with front steering arms

🔄 Compatibility

The Pro-Line Rock-Tek system is designed for RC crawlers equipped with:

• 1.9" rims approximately 0.8" (20.3 mm) wide
• Crawler tires with an outer diameter between 4.75" and 4.9" (approximately 121 to 124.5 mm)
• 1.9" Pro-Line Beadlock rims, for which the system has been optimized

❗ Warning: Compatibility does not depend solely on the rim diameter. The available interior space within the wheel and tire, the rim design, tire dimensions, hub stems, and axle configuration can all affect installation. Be sure to check your vehicle’s dimensions and configuration before purchasing.

🎯 Who is it for?

The Pro-Line Rock-Tek is designed for 1.9" RC enthusiasts who want to improve their vehicle’s off-road capabilities without resorting to traditional wheel weights. Its magnetic system keeps the weights in a low position, thereby improving traction, stability on climbs, and control on slopes, while minimizing the effects of rotating mass. This is a particularly attractive solution for drivers seeking optimized performance on rocky and technical trails.