Steering is the handshake between driver and machine. When it feels vague, notchy, or heavy, you notice it immediately. When it feels right, you stop thinking about it and simply drive better. That moment of clarity is what drives the aftermarket forward. Over the last few years, steering upgrades have moved beyond simple parts swaps into integrated systems that combine precision hardware, smarter hydraulics, and, increasingly, electronics that once belonged only in high-end OEM platforms. The next decade will push that evolution further, and it will change how we think about everything from an aftermarket steering shaft to a full power steering conversion kit.
I have spent long Borgeson steering box enough under dashboards and above subframes to know that the best upgrades respect geometry, reduce friction, and survive heat, vibration, and slop. Flashy coatings and buzzwords cannot hide a binding universal joint steering coupler or a mismatched steering box conversion kit. The future is promising, but it will reward careful installers and smart buyers who understand the trade-offs.
What is driving change
Three forces are pushing the aftermarket to rethink steering. First, performance expectations keep rising. Racks and columns that felt acceptable 20 years ago now feel wobbly next to modern electric-assist cars with tight on-center feel. Second, packaging constraints are tougher. Engine swaps, turbo plumbing, and big-tire fitment crowd the column path and exhaust heat cooks bushings. Third, the influx of electric power steering and driver assist sensors in new cars has set a new baseline for noise, vibration, and harshness, as well as precision. The aftermarket is responding with better materials, modular components, and hybrid systems that can play with or without factory electronics.
The coming era of modular mechanicals
The core of a good steering system is still mechanical. A straight steering shaft, concentric bores, quality bearings, and properly phased universal joints will always matter. What is changing is how these components are specified and built. Instead of one-size-fits-all, the best aftermarket steering components are moving to modular assemblies that accept shorter columns, collapsible sections, and alternate intermediate shaft lengths without custom machining.
The upgrade I recommend most often is a double U-joint intermediate shaft with a support bearing. When headers or starter motors force a shallow angle at the firewall, that second joint and a mid-shaft bearing fix bind and restore smooth rotation. In the past, this required trial and error. Now, manufacturers offer indexed yokes and fine-spline couplers that let you clock the joints, set phasing, and dial out the last bit of torsional ripple. Expect more off-the-shelf skus that handle compound angles and tighter routing around turbo manifolds, especially for popular swap platforms like LS engines in older GM bodies, Coyote engines in classic Fords, and K-swap Hondas.
Materials are improving in quiet ways. The humble steering universal joint has benefited from better needle bearing cages and surface hardening. Cryo-treated pins and nitrided trunnions hold preload longer, which keeps lash at bay after thousands of lock-to-lock sweeps. We are also seeing more stainless yokes with dissimilar metal sleeves in the bore to reduce galling on steel columns. That sounds minor until you try to pull a shaft apart after a few winters of salt.
On the shaft side, expect more collapsible designs. Collapsible sections are about more than safety. They make engine removal easier and help with NVH by acting as a small torsional spring. High-strength thin-wall shafts with precise slip tolerances reduce rattle without relying on thick grease that dries out. Some builders are experimenting with polymer-coated slip joints, similar to driveshaft slip yokes, to reduce stiction and squeak.
Electric assist and hybrid systems
The most obvious shift is the growth of electric power assist. A full EPS rack retrofit is still complex on many chassis, but column-assist units have matured into a reliable path for classic vehicles, off-road builds, and even road-race cars that need consistent assist without parasitic draw. An EPS column can slot between the wheel and the existing box or rack, preserving front-end geometry while easing effort.
The best of these systems use torque sensors in the column itself and a control module that monitors vehicle speed. The cheap kits with a fixed assist curve feel numb at highway speeds and jittery over mid-corner bumps. The next generation uses CAN integration where available, or a discrete speed sensor and steering angle feedback to taper assist. Even without CAN, a standalone controller that reads speed and allows map selection through a discreet rotary switch on the dash dramatically improves feel.
For many vehicles with traditional steering boxes, the middle ground remains compelling. A steering box conversion kit that upgrades the old recirculating ball unit to a modern variable ratio box transforms on-center response. Combined with a column-assist EPS module or a high-quality hydraulic pump and valve, it gives the crispness of a rack without re-engineering the front subframe. Companies are already packaging boxes with matched pitman arm lengths to maintain geometry. Expect more plug-and-play offerings that include the rag joint delete, a properly sized double-D shaft, and a firewall bearing to clean up the linkage.
Smarter hydraulics still matter
Electric assist gets the headlines, but for vehicles with big front tires, heavy winches, or serious trail duty, hydraulic power remains king for raw force and heat tolerance. The future here is refinement. Pumps with variable displacement reduce parasitic losses at cruise while still delivering the volume for parking maneuvers. Steering valves with better centering springs and polished spools reduce hiss and nibble. Remote reservoirs with internal baffles keep air out of the fluid on long sweepers and off-camber climbs.
A power steering conversion kit will soon look less like a box of generic brackets and more like an engineered system matched to engine speed, pulley ratio, and steering rate. I am already seeing kits that include a pressure and flow spec sheet, a pulley diameter recommendation, and a return-line cooler with an actual BTU rating. That level of engineering matters because most poor power assist feel comes from mismatched flow and pressure. Too much flow gives nervous on-center drifting. Too little gives heavy, sticky steering when hot.
For those doing a manual to power steering conversion on older vehicles, don’t overlook the steering knuckles, scrub radius, and caster. A hydraulic system can mask geometry sins, but not erase them. The best future kits will pair valving with recommended alignment settings, and perhaps with revised upper control arm mounts or offset bushings, so the assist works with geometry rather than against it.
Data enters the garage
We are used to tuning dampers with clickers and AFR with logs. Steering is next. Sensors for angle, torque, and yaw are shrinking in cost, and tuners are starting to log steering input against tire temperature and slip. That does not mean turning your street car into a science project. It means being able to identify when your universal joint steering angle is too steep, causing non-linear input, or when rack travel exceeds joint articulation on extreme lock.
For serious track use, a torque overlay map can tell you whether your assist is tapering correctly above 90 mph. On a lifted truck, comparing steering torque and pump pressure across an obstacle can reveal if the system is starving at idle. The aftermarket will respond with simple plug-in data pigtails and control boxes that let you set assist curves based on speed ranges rather than a single ramp.
I expect to see steering controllers that integrate with brake pressure sensors and ABS wheel speed, softly firming assist under threshold braking to stabilize the driver’s wrists. This is already standard on some performance cars. Bringing a simplified version to older platforms is realistic within the next few years.
Packaging around heat and angle
Any builder who has fitted long-tube headers on a tight chassis knows the pain. Heat bakes the lower shaft and dries the grease in the joint, then the joint notches up and the wheel feels gritty. The answer has been better heat shields, PTFE-lined boots, and more careful routing. The next wave will include ceramic-sleeved shafts and joints with higher-temperature seals. Some suppliers are experimenting with graphite-infused polymer cages that hold needle bearings at temperatures that would have seized old designs.
Angle management is equally important. A steering universal joint is happiest below about 30 degrees of angle, and most feel better near 20. When builders push past that, input becomes non-linear and assist mapping can feel odd. As modular shafts become more common, we will see more mid-shaft bearings mounted to frame tabs to break one big angle into two smaller, smoother ones. Expect more shims and indexing notches that make it harder to misalign phasing, because misphased joints produce a pulsing feel that inexperienced installers often blame on the box or rack.
Electric classics without the compromise
The quiet revolution is happening in restomods. Owners want modern steering feel without losing the look of original wheels and columns. A tasteful EPS column tucked under the dash, combined with a compact rack or a well-matched steering box, can deliver that. The trick is matching assist to effort expectations. A 1960s muscle car with wide front rubber and a quick box does not need the same assist curve as a 1980s lightweight coupe.
The better kits are offering selectable maps. One for city use with quicker assist rise just off center. One for highway with lower assist and a small deadband to prevent fidget. A third for spirited driving with firmer weighting and faster ramp-down as speed increases. I have also seen a few manufacturers pair EPS with a small vibration damper on the column, which filters high-frequency chatter from rough roads without adding mush.
For period-correct builds, slimline EPS motors and remote controllers mounted low under the dash keep the engine bay clean. The universal joint steering linkage can then be a straight shot to the rack or box, minimizing angles and heat exposure. As 3D scanning becomes more common, expect vehicle-specific brackets that tuck the assist neatly away, with no drilling of the firewall.
Off-road steering durability gets smarter
Rock crawlers and overland rigs are hard on steering. Big tires, beadlocks, and long travel punish joints and boxes. The trend has been larger spline sizes, heavy double-shear mounts for track bars, and hydraulic assist rams. That will continue, but the next step will marry those brawny parts with better sealing and monitoring.
Sealed universal joints with labyrinth shields and grease channels that actually reach the needles will become standard. Slip shafts with metric O-ring seals, not just dust caps, will keep grit out. And for those running hydraulic assist, flow-limiting orifices sized to steering rate will save pumps from cavitation when drivers whip the wheel at idle. A few companies have started adding fluid temp and pressure ports on the return line with compact digital readouts on the dash. This will spread because it prevents field failures that ruin trips.
The most interesting development is electronic load management. A steering controller that senses stall at the ram and briefly increases idle via CAN or an idle-up solenoid can prevent pump groan and belt slip. That kind of cross-system coordination used to require factory integration. The aftermarket is getting close to an affordable universal module that reads pressure and bumps idle by 100 to 200 rpm when needed.
Conversions that respect geometry
A steering box conversion kit or a rack-and-pinion conversion can make or break handling. The common mistake is chasing quicker ratios without minding inner tie rod length and height. Poorly placed racks introduce bump steer and roll steer that no amount of alignment can fully fix. The responsible path is a kit that keeps tie rod pickup points in line with the control arm pivots or includes corrected steering arms.
The better kits now publish tie rod length, height relative to the lower control arm pivot, and rack travel per steering wheel turn. That data allows you to compare with stock. If it is missing, ask for it. The future looks brighter here because CAD models of classic front suspensions are widely available. The top-tier suppliers are using those models to set rack position, then creating bolt-in crossmembers that land the rack where it should be, not where it is easiest to mount.
This trend also applies to manual to power steering conversion packages. The addition of assist changes steering effort, which can mask inadequate caster and poor tire contact. The best kits pair assist with revised upper control arm mounts or recommend a caster target, often in the 4 to 6 degree range for street cars with modern radial tires. A small change here often yields better on-center stability than any pump or motor tweak.
Noise and feel are the new battlegrounds
We have enough assist. What drivers want is feel. That elusive blend of light parking effort, clean on-center, and honest buildup through a corner requires attention to friction, compliance, and harmonics. Two innovations will help.
First, better intermediate shaft bearings. Cheap bearings brinell under vibration and develop a tick you can hear on a quiet road. Look for sealed angular-contact bearings with proper preload, not loose radial bearings. Second, compliant couplers that do not smear feedback. Old rag joints are good at isolation but mush up response. Expect more composite couplers with multi-layer laminates that isolate high-frequency shake while keeping torsional stiffness under steering torque. Some are already arriving with harmonic tuning, much like a crank damper.
Electric systems add another layer. Assist motors introduce cogging if the control loop is not tight. Advanced controllers are using higher PWM frequencies and better current sensors to smooth output. In the next few years, we will see user-selectable filters that let you choose how much road texture reaches your hands without turning the wheel into a speaker cone for tire noise.
Installation realities that will not change
The slickest kit can turn sour if the basics are ignored. Steering must be treated like a safety-critical system every time. Mock up the firewall angles. Check phasing marks on every universal joint. Verify full rack travel without binding at lock with the suspension at full droop and full bump. If a joint feels notchy on the bench, it will feel worse on the road once heat and load increase.
Two recurring pitfalls deserve attention. Using a set screw alone to secure a yoke on a shaft is risky without a proper dimple or through-bolt. Vibration walks those screws loose. And routing an intermediate shaft too close to a header primary will kill it, even with a small shield. Keep at least a finger width of air gap and use real reflective barrier where needed.
What shops will stock next
The builders who install steering upgrades weekly are already changing their shelves. Instead of a pile of random joints and shafts, they are standardizing on a few spline patterns, a range of double-D sizes, and support bearings with weld-in and bolt-in options. They keep column-assist EPS units in two torque ratings, plus plug-and-play harnesses for popular classics. They stock a couple of power steering pumps with different flow characteristics, and a set of inline restrictors to fine-tune feel.
I expect to see more shops invest in quick 3D measurement tools. A handheld scanner and basic CAD can capture firewall, engine, and frame clearances in an hour, then spit out a shaft path and bracket layout. That up-front work reduces rework and makes the difference between a steering system that merely functions and one that delights.
The path to a better feel on a specific car
Every car teaches the same lesson in its own way. On a restomod 1969 Camaro with a 525 hp LS and long-tube headers, we used a two-joint intermediate shaft with a mid-shaft bearing on a small tab welded to the subframe. A thin-wall collapsible shaft section took up thermal expansion and eased NVH. The steering box conversion kit selected a variable ratio unit matched to the pitman arm length, and we dialed assist with a small restrictor to calm on-center. The result was a wheel that turned fingertip light at parking speeds but settled down on the highway.
On a lifted Wrangler with 37s, hydraulic assist with a properly valved pump and a small fluid cooler kept steering effort consistent after long climbs. Sealed universal joints and a heat shield next to the crossover pipe preserved smoothness. The column remained stock, but we added a small vibration damper on the shaft. After a day of rocks and ruts, the wheel still centered cleanly.
On a Miata track car, we skipped hydraulic assist entirely and used a compact EPS column with a controller tied to vehicle speed. The universal joints stayed shallow thanks to careful engine mount selection, and we avoided heat issues by running the shaft on the cool side of the bay. With the controller set to the firmest map above 60 mph, the car felt planted without losing effort buildup.
Where the innovations will come from
The ingredients are familiar, but two supply chains will shape the next wave. Electric motor and sensor vendors from the robotics world are entering automotive-grade territory with better torque sensors and compact motors. That will make EPS conversions cleaner. And motorsport suppliers who understand feel will push valving, software, and materials beyond generic OEM targets.
Open standards will help. If steering controllers expose a simple configuration interface and a handful of data points, tuners and shops will create shared assist maps and troubleshooting guides. As more vehicles move to by-wire systems from the factory, the aftermarket will meet them halfway with assist modules that can read CAN messages without reverse-engineering the whole network.
Practical buying advice for the next few years
- Start with geometry. Verify rack or box position, tie rod angles, and caster before you chase assist. If geometry is wrong, no pump, motor, or shaft will fix feel. Choose quality joints and shafts. A premium steering universal joint and a collapsible aftermarket steering shaft often deliver more improvement than a fancy pump. Match assist to use. Street cars benefit from variable assist, whether EPS or hydraulic with restrictors. Off-road rigs need durability, cooling, and flow. Plan for heat. Keep at least 10 to 15 millimeters clearance from exhaust, add reflective shields, and specify higher-temp seals if available. Verify phasing and travel. Set universal joint phasing on the bench, then confirm full lock both directions with suspension at bump and droop.
The quiet revolution inside the column
Many of the most meaningful changes will never be seen once the trim is back on. Better column bearings, tighter tolerances where the shaft passes through the firewall, and smarter collapsible sections will make steering feel more precise without adding harshness. I expect column modules to integrate small vibration dampers that target the 100 to 200 Hz band where tire and road harmonics can become buzz in a light chassis. That is the sort of refinement drivers notice as calmness around center and a lack of tingle on coarse pavement.
Steering wheels themselves could play a small role. Not with gimmicks, but with subtle changes in rim stiffness and isolators at the hub that do not smear feedback. We might see aftermarket hubs with decoupled radial and torsional characteristics, giving a quieter wheel without dulling steering torque buildup.
The case for patience and testing
It is tempting to bolt on parts and expect magic. The best results come from iterative testing. Make one change, drive for a week, then make the next. If you add an EPS column, log or at least note steering weight at different speeds and adjust the map. If you change a pump, measure pressure and temperature after a long drive. If you revise an intermediate shaft, feel for notches with the front wheels off the ground and the engine off. Testing will reveal whether the change solved the real problem or simply masked it.
A simple method I use involves three short drives, each on the same loop with a mix of parking maneuvers, a steady-state highway section, and a couple of medium-speed sweepers. Take mental notes or a quick voice memo focusing on on-center, initial turn-in, mid-corner weight, and return to center. That simple routine prevents you from chasing your tail with too many variables at once.
Looking ahead
Steering will never be a set-and-forget part of performance and comfort. As tires get stickier, vehicles get heavier, and expectations rise, the systems that connect our hands to the road will keep evolving. The aftermarket is increasingly comfortable marrying hardware to software, pairing a precise aftermarket steering shaft and a well-phased steering universal joint with an assist module that can grow with your build.
Whether you are planning a manual to power steering conversion on a beloved classic, considering a power steering conversion kit for a work truck, or eyeing a steering box conversion kit to tighten up a cruiser, the direction is clear. The best upgrades will respect geometry, reduce friction, manage heat, and add just enough intelligence to make effort curve and feedback feel natural.
The future is not about replacing driver skill with electronics. It is about giving the driver a cleaner, more predictable connection, one that fades into the background when you are commuting, yet comes alive when the road opens up. If the industry keeps its focus on feel and durability, the next generation of aftermarket steering components will make that connection stronger than ever.
Borgeson Universal Co. Inc.
9 Krieger Dr, Travelers Rest, SC 29690
860-482-8283