SCORE Journal - The Official Publication of SCORE Off-Road Racing
Issue link: https://read.uberflip.com/i/1543401
STABILITY AT SPEED Understanding Today’s High-Performance Suspension Kits By Micah Anderson Aftermarket suspension kits have evolved from niche custom upgrades into widely engineered systems produced by established manufacturers. Designed for late-model trucks, these foundational modifications refine geometry, damping, and durability to meet growing expectations both on the highway and in demanding terrain. Here’s how off-road performance suspension manufacturers are meeting the expectations both on the highway and in the dirt. The Shift Beyond Factory Limits Late-model trucks and SUVs such as the Chevrolet Silverado, Toyota Tundra, Ford F-150, Bronco, 4Runner, and their heavy-duty counterparts arrive from the factory with impressive off-road capability, with flagship models like the Raptor, Tremor, TRX, ZR2, and AT4X. Even so, many vehicle owners are demanding more performance to be able to drive harder, longer, and faster through wild and untamed terrain, and/or they just want a ride that is built for it and has the profile to back it up. Yet broad capability requires compromise. Factory suspension systems are engineered to balance comfort, longevity, cost, and broad usability across a wide range of drivers and operating conditions. Aftermarket designs typically narrow that focus, tuning vehicles for increased wheel control, improved travel, and greater consistency when terrain becomes demanding, and speeds begin to climb. As a result, many owners pursue additional performance not only to support sustained off-road use but to maintain composure under added weight from gear, larger tires, and equipment while preserving predictable on-road behavior. Responding to this demand, the off-road aftermarket continues to develop suspension systems engineered for repeated high-speed dirt miles, from whoops and desert chop to rocky two-track, without sacrificing everyday reliable and comfortable drivability. Manufacturers, including Camburg, Dirt King, and Baja Kits, describe a market shaped by advancing shock technology, refined suspension geometry, and buyers seeking vehicles that remain composed far beyond maintained roads. The result is a segment that continues to expand as serious enthusiasts look to build trucks capable of sustained off-road use rather than occasional trail driving. Off-road suspension manufacturers say the reason for enhanced performance is straightforward: stock systems are built around cost, packaging constraints, and broad comfort targets, not sustained off-road punishment. “The biggest limitations with the stock suspension are wheel travel, subpar damping, and are engineered to satisfy a very wide operating envelope: that includes dozens of factors from cost to comfort, and regulations to production tolerances,” said Scott Zindroski, product manager for suspension at the MagnaFlow Group and Camburg Engineering. He said improved angularity in joints and additional usable shock travel can “make drastic improvements to the handling and ride quality both on and off-road.” Dustin Weaklem, president of Dirt King, framed the decision similarly. Buyers typically want “increased suspension travel, refined dampening that keeps the vehicle composed across a wide range of conditions, and the durability to handle repeated off-road punishment,” he said. Performance is often the primary motivator, but visual presence carries weight as well. Ride height, tire clearance, and suspension hardware signal intent, and experienced drivers recognize when capability aligns with appearance. For many owners, the expectation is straightforward; the vehicle should perform the way it looks. What Defines a Modern Suspension Kit While configurations vary by platform, most high-performance systems focus on improving three core areas: wheel control, structural durability, and suspension geometry. For many owners, a “complete kit” might start with the front end. The current truck’s basic off-road suspension starter kit would likely include coilovers and upper control arms, often paired with rear shocks and springs matched to the vehicle’s weight and use. “With today’s vehicles, coilovers, rear shocks, and upper control arms are packaged as a complete kit,” said Zindroski. What has evolved, he noted, is the level of adjustability now available, including larger shock bodies, remote reservoirs, expanded compression tuning, and electronic damping integration that has gradually migrated from racing into both aftermarket and OEM applications. Where the market has shifted is in part quality, adjustability, and integration. Manufacturers point to larger shock bodies, remote reservoirs, more adjustment and tunability, more sophisticated and refined shock technology systems, and shock products designed as vehicle-specific applications. Four Wheel Drive and longer-travel systems add another layer. Weaklem said Dirt King’s long-travel kits typically include extended upper and lower arms, extended axles, longer shocks, upgraded leaf or coil springs, and mounts engineered for the longer shock package. Those systems also require careful attention to CV angles, clearances, and pivot design. “A decade ago, upgrading suspension involved extensive custom fabrication and kits used trophy truck-inspired pivots to adapt to OE parts,” Dustin shared. These adaptations would push OE parts in ways they were not originally designed to handle. Weaklem said modern kits are more user-friendly and include “purpose-built pivots for their intended use,” with application-specific bushings and joints aimed at durability and OE-like road manners. Ricky Berry, senior marketing manager for FOX Factory’s SportTruck USA, representing Baja Kits, pointed to rapid advancements in shock technology and link geometry as major contributors to this evolution. “We can now tune shocks on-the-fly with live-valve in real time or even DSC adjusters’ analogy. In addition, we are able to utilize greater travel numbers for off-road while retaining on-road drivability thanks to advances in linked suspension as well as geometry corrections in IFS applications. Utilizing material applications and advanced manufacturing techniques, the evolution has been exponential.” Across manufacturers, one theme remains consistent: usable travel often matters more than headline numbers. Suspension performance depends not only on how far a wheel moves, but also on how well the system maintains composure throughout that motion. The Components That Matter Most Even without chasing maximum travel, most manufacturers focus on the same core areas: Wheel Travel and Usable Shock Stroke:Travel numbers are easy to market,but the meaningful measure is usable travel paired with control. Damping and Heat Management:Desert miles build heat in the shocks quickly. Larger oil volume, reservoir design, and proper valving help maintain consistent performance as conditions and speeds change. Geometry: Caster, Camber, and Stability:Geometry is the difference between a truck that feels calm at speed and one that wanders or feels vague. “Many vehicles, when lifted, lose caster, which induces poor steering and increases wandering at higher speeds both on and off-road,” Zindroski said. He said Camburg upper control arms and long-travel kits aim to correct and increase caster, while also managing camber to avoid unfavorable alignment during droop and cornering. Weaklem said Dirt King typically works within factory chassis points and OEM knuckles, focusing on dialing in caster and camber, and for long-travel applications, slightly increasing wheelbase to fit larger tires. “Caster adjustments have the greatest impact on steering feedback and high-speed straight-line control,” he said. For Baja Kits, shock tuning, setup, and adjustability are what they focus on as a center point. “Baja Kits work closely with Fox to determine the best rates and valving for most conditions,” stated Berry. “Our DSC shock adjusters and Live valve options allow the end user to make real-time adjustments to valving, and of course, spring rates and internal valving can be adjusted for each customer’s needs.” Joint and Pivot Design Ball joints, uniballs, bushings, and pivots are not just durability items; they also influence noise, steering feel, and maintenance needs. Zindroski pointed to Camburg’s sealed joint approach: “One of the reasons we developed our Camburg X-Joints years ago was to offer the strength and movement of a Uniball bearing in a sealed design that can hold up to rain/mud/snow,” he said. Dirt King has found a reliable vendor in Probearing to incorporate application-specific ball joints and bushings. “We are using hardware that is stronger, sealed, quieter, and maintains OE-like compliance and steering feel. The result and biggest advancement is improved pivot design to deliver performance without compromise,” Weaklem explained. “Race car parts require race car maintenance,” Berry explained. “Customers want longevity when spending big money on suspension components. Advances in bushing and ball joint tech have made this more possible lately. If the suspension links are engineered correctly, massive misalignment in suspension joints isn’t as crucial to allow significant bind-free travel. A good example of this is our GM LT1 long travel kit that uses ball joints and rubber bushings. We just raced our Baja Kits test truck at the King of the Hammers Desert Challenge to validate our use case of these new Joints and bushings. The results were better than expected, and after a podium finish, it can still be driven to the store without any rattles or squeaks!” Building in Stages: A Practical Approach for Real Budgets Many serious enthusiasts build vehicles in phases. Manufacturers agree there is a right way to do it and a costly way to do it. Zindroski described staged building as a balance problem: “You want the front suspension to work with the rear and vice versa.” He said Camburg designs many parts to be upgradeable, letting owners start with a coilover, rear shock, and upper control arm package, then add components such as lower arms, bump stops, and rear spring upgrades over time — with a path to long travel that can reuse certain shock investments with updated springs and valving. Weaklem offered a caution. “Building in stages often sacrifices performance or increases total cost,” he said. He noted owners can upgrade the front first and address the rear later, but “the full benefit comes when they work together as a pair.” Dirt King’s approach is to develop mid-travel and long-travel systems as complete packages, which makes component carry-over between packages less common. Berry stresses that the vehicle’s front and rear should always be addressed together, but there are ways to do these builds in stages. “You can lift a vehicle with basic springs/shocks, but geometry and drivability will suffer without the proper complementary components. Those items could technically come later, but it does pose a risk of damaging OEM components and causing premature wear and/or failure. Some of our offerings at Baja kits allow the end user to buy kits to upgrade front suspension and then rear suspension, allowing customers to “ease” into higher quality packages. For example, one could buy just a front conversion kit including arms and shocks, then add a rear suspension kit months or years down the road. The same could be said for shock packages. You can upgrade to larger diameter shocks, say from a 2.0 to a 2.5 or 3.0 post the initial kit purchase. Bypass shocks and Live valve upgrades can be added anytime the budget allows, post the original install, as well as allowing the end user to “upgrade” as they go.” For buyers, the takeaway is consistent: define the end goal first, then choose an upgrade path that matches it. Buying parts twice is one of the most common mistakes. Who Buys High-Performance Kits — and Why This market is driven by owners who want a truck that can do multiple jobs: • Daily driving with predictable steering and braking feel • Weekend desert travel with sustained speed over rough terrain • Payload changes from gear, passengers, and accessories • Occasional towing, overland travel, or long-distance trips Manufacturers say many buyers are chasing the same result: more control. Not just “softer” ride quality, but better stability, more consistent damping under load, and alignment geometry that does not fall apart when the vehicle is lifted and driven hard. Common Buyer Mistakes (and How to Avoid Them) Each of the suspension manufacturers highlighted the same issue: owners often buy based on a number or a look, not on actual use. Zindroski said buyers often “over or under” purchase based on how they use the vehicle, and that product ranges exist because not everyone needs long travel. Weaklem said many owners start without a clear end goal, then buy parts twice. Dirt King encourages upfront planning based on use and target stance so purchases align with the final result. Berry agreed that a common mistake is attempting to save money by purchasing the most cost-effective suspension kit. “We sometimes see a consumer buy a $60 to $75k + truck and install the cheapest system they can. This devalues the truck, makes for an unhappy owner, and ultimately costs the owner twice as they generally remove and upgrade to a higher quality kit, or they sell the truck and start over. Our advice, buy once, cry once.“ A practical rule for readers: if the vehicle sees frequent high-speed dirt miles, prioritize control, cooling, and geometry correction over headline travel numbers. Camburg / MagnaFlow Group -Focus: Geometry correction, upgrade paths, sealed joint options, and racing influence Zindroski said stock limitations typically show up in “wheel travel, poor geometry, and subpar damping.” He said upgraded joints in upper control arms can improve angularity, while shocks with more usable travel help improve control both on dirt and pavement. On system evolution, he said core packages still center on “coilovers, rear shocks and upper control arms,” but options have expanded with larger shock bodies, added adjustability, and increasing electronics integration that started in racing and moved into aftermarket and OEM trims. Durability and maintenance remain central. Zindroski said Camburg created X-Joints to provide the movement and strength associated with a uniball in a sealed design that holds up to harsh weather and reduces maintenance compared with exposed bearing setups. Dirt King - Focus: Purpose-built pivots, OE-level testing mindset, end-goal planning, future tech Weaklem said most buyers come to the aftermarket looking for “increased suspension travel, refined dampening … and the durability to handle repeated off-road punishment.” He said modern kits have become more user-friendly than earlier generations that often required extensive fabrication. He pointed to pivot and joint development as a major advancement, including application-specific sealed solutions designed to be stronger while maintaining OE-like compliance and steering feel. Weaklem said Dirt King maintains durability by combining lab testing with real-world validation, and he cited partnerships in shock tuning and vehicle dynamics as key parts of the development process. On staged builds, Weaklem said upgrading in phases can raise total costs and reduce performance if the end goal is not defined. He recommended planning the build from the start, so interim components are chosen intentionally rather than purchased as accidental dead-ends. Baja Kits - Focus: Usable travel, geometry integrity, complete system design, and racing validation Rick Berry said customers typically upgrade factory suspension to improve ride control in demanding terrain while increasing overall component strength. Greater suspension travel, refined shock valving, and improved directional control all contribute to maintaining stability when conditions become more severe. The company said advances in shock tuning and suspension geometry have significantly expanded modern kit capability. Electronically adjustable damping, refined compression control, and improvements in materials and manufacturing now allow vehicles to achieve stronger off-road performance while retaining composed road manners. Baja Kits recommends addressing front and rear suspension together whenever possible to maintain predictable handling, though phased upgrades remain common. Owners may begin with a front conversion that includes control arms and shocks before incorporating rear suspension upgrades, larger-diameter shocks, or bypass systems as vehicle demands increase. “Big travel numbers are great, however, not at the detriment of functionality,” the company noted, emphasizing the importance of pivot design, component life, and overall drivability when evaluating a system. Balancing durability with everyday usability remains a central engineering challenge. “Race car parts require race car maintenance,” Berry said, though advances in ball joint and bushing technology continue to narrow that gap. Racing plays a direct role in development. “Beating on a truck for hundreds of miles in the roughest terrain possible results in information,” the company stated, noting that post-race inspections frequently guide product refinements while helping validate real-world performance. Matching Suspension to Vehicle Purpose High-performance suspension kits sit at the intersection of engineering and real-world use. For many owners, the goal is not maximum travel or a single “best” setup. It is a balanced truck that is stable at speed, predictable on pavement, controlled under load, and durable enough to handle repeated miles in rough terrain. Manufacturers agree on one point: the best results come from matching the kit to how the vehicle is truly used, then choosing components that support control, geometry, durability, and balance as a complete system. SJ