Pro-Line Rock-Tek 1.9" Rock Crawler Dual Stage Foam & Brass Weight (108g ea) (2) (108g ea)
About this part
Rock-Tek Weight System Overview:
Stop fighting gravity the old way — Rock-Tek transforms crawler performance with a magnetically controlled, non-rotating weight system that plants mass exactly where it counts, delivering unmatched stability, sharper response, and smarter control without the drawbacks of traditional brass setups.
About the Rock-Tek 1.9" Weight System
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
Includes:
- (2) Rock-Tek 1.9" Rock Crawler Dual Stage Foam & Brass Weight System
Specifications:
| Application | 1/10 Rock Crawlers |
|---|---|
| Inner Bead Diameter | 1.9in (48.26mm) |
| Outer Overall Diameter | 4.76in (120.9mm) |
| Width | 1.65in (41.91mm) |
| Weight (Each) | 3.8oz (108g) |
CA Residents Prop 65 Warning
WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...Reviews2.6 · 5 reviews
This weight system is absolutely amazing. Easy to install. Increases crawling capabilities immediately. I really hope they will make a version that fits 2.2 wheels !!
Hard to install not enough foam on the plastic insert. Don't buy.
Got my order, works great except I have had a problem with the magnets on the spindles outside of the tires keep turning and getting caught on the tire!
I can’t find a set of beadlock wheels slim enough to work on theses. Most beadlocks are 1” wide. These require about a 3/4” wide wheel. I can’t find any. I can’t use them.
Was really excited that there was a new crawler product advertised online, so I was able to get them ordered. Shipping was great, but the foams were torn brand new out of the box, which was still factory sealed.
Reviewers are split on this Pro-Line Rock-Tek 1.9" dual stage foam and brass weight set. One verified owner rated it highly, citing easy installation and an immediate improvement in crawling. Another found installation difficult, noting insufficient foam on the plastic insert. A further reviewer reported that the foams arrived torn in factory-sealed packaging, though shipping was praised. One owner had trouble with magnets on the outer spindles turning and catching on the tire. Another noted the set requires a wheel about 3/4" wide, which they could not source, so they could not use the product. One reviewer asked for a version that fits 2.2" wheels. Overall feedback is limited to five reviews, with fit, installation and damage issues recurring.
- + Easy installation
- + Immediate improvement in crawling
- − Difficult installation with insufficient foam
- − Foams arrived torn
- − Magnets on spindles catch on tire
- − Requires narrow ~3/4" beadlock wheels