MetalCloak Technology Center | Patented Off-Road Suspension
We Don't Ask You To Take Our Word For It.
Over a decade of controlled testing, patented engineering, and third-party certification. Every claim we make is backed by data you can verify.
The Only Dataset
of Its Kind in the Industry
Corner Travel Index (CTI) measures true suspension articulation at all four corners of a vehicle. We built a trailer. We tested 14,000+ rigs. Then we used that data to engineer better suspension systems than anyone else on the market.
No other suspension manufacturer in the industry has a dataset this size. Every test informs how we design, refine, and validate our suspension systems.
7 Technology Patents.
All Earned on the Trail.
We don't adapt parts from other applications. We don't copy what works elsewhere. Every technology on this page was invented by MetalCloak engineers, protected by a technology patent, proven on our CTI ramp, and validated in the real world before it shipped.
Duroflex™ Joint
The vulcanized elastomer, self-centering joint enhanced with DuPont™ Kevlar® fiber. Introduced in 2011, it remains the gold standard for off-road suspension flex and NVH dampening — and every competitor has tried to copy it.
True Dual-Rate™ Coils
Linear springs go soft at long travel. Progressive springs compensate with bad engineering. True Dual-Rate coils solve the problem correctly — firm enough for highway stability, compliant enough for maximum trail flex.
RockSport™ Shock System
Born from the patented 6Pak Floating Shock Body Technology — the longest travel relative to compressed length of any off-road shock ever built. The full RockSport line carries forward that same engineering philosophy.
Game Changer™ Suspension
Every patented technology in one complete system. Duroflex joints, True Dual-Rate coils, Durotrak track bars, height-adjustable bump stops, and RockSport shocks — engineered to work together across all platforms.
Control Certified
Third-Party Validated
Safety Certified.
Not Just Trail Rated.
FMVSS 126 is the federal standard that governs Electronic Stability Control performance under extreme conditions. Most suspension companies have never run this test — because it's expensive, time-consuming, and requires third-party validation.
We ran it anyway. On a Jeep that had been wheeled hard and put away dirty. With 37" tires and full body armor installed. Validated by Link Engineering.
We Test It.
We Film It.
We Publish It.
Eight documented comparisons against the most popular suspension brands in the industry. Every test uses measurable criteria — CTI flex scores, dyno data, NVH analysis, and real trail performance. Not opinions. Receipts.
Every test is on video. Every metric is documented. We publish the results regardless of outcome because we know what happens when the testing is done right.
Watch All 8 TestsBuild Smarter.
Run the Numbers First.
Engineering tools built for off-road enthusiasts, mechanics, and anyone who wants to understand the math behind their build before spending a dollar.
RTI / CTI Converter
Convert between RTI and CTI measurements to compare your suspension's articulation against our test ramp data and industry benchmarks.
Crawl Ratio Calculator
Determine your actual crawl ratio based on transfer case, transmission, and axle gear ratios.
Final Drive Ratio
Calculate the effect of tire size changes on your effective gear ratio and speedometer accuracy.
Tire Pressure (Load)
Find the optimal tire pressure for your load range and vehicle weight — on road and on trail.
The Deepest Library of
Suspension Knowledge
in the Industry.
Twelve years of engineering insights, build guides, competitive analysis, and technical documentation — written by the people who actually build and test the systems.
Have Questions?
Let's Talk.
Our team is here to help — whether you're researching your first build or looking to upgrade what you're already running. Reach out and let's figure it out together.