BendPak HD-9 4 Post Car Lift: Model Comparison for CV Axle and Half-Shaft Work

If you’re doing CV axle and half-shaft replacement on lifted trucks, overlanding rigs, or anything with aftermarket suspension, the BendPak HD-9 4 post car lift is one of the first names that comes up, and for good reason — it gives you a stable, drive-on platform with the clearance and capacity to work underneath a loaded rig without babysitting a jack stand setup. We install these across Iowa and ship parts and lifts into northern Missouri regularly, and one recent West Des Moines install gave us a good excuse to lay out exactly how the HD-9 lineup differs, because BendPak doesn’t make just one HD-9 — there are several variants, and the differences matter a lot more than the badge on the column.

Why CV Axle and Half-Shaft Work Demands a 4 Post, Not a 2 Post

Half-shaft and CV axle jobs on trucks and overlanding builds usually involve pulling a wheel and hub assembly free while the suspension hangs loose, which means you need the vehicle high, stable, and with full underbody access on both sides at once. A 2 post lift can do this, but the arms and pads sit in your way more often than not on lifted trucks with aftermarket skid plates, long-travel suspension, or oversized tires. The BendPak HD-9 4 post car lift solves that by putting the vehicle up on runways with zero contact points under the frame or control arms — you drive on, lock the wheels, and you have completely open access from rocker to rocker.

We’ve done this exact swap dozens of times for builders running 35s and 37s on solid axle swaps, and the deciding factor is almost always runway width and rise height, not just capacity. A stock HD-9 with 9,000 lb capacity handles nearly any half-ton or 3/4-ton truck without blinking, but the runway width and the optional rolling jack bridge matter more for CV work than the tonnage rating does. If you’re constantly pulling axles, we usually recommend adding the sliding jack tray so you’re not stacking floor jacks and blocks to get separation once the wheel comes off.

BendPak HD-9 4 Post Car Lift: The Base Model Explained

The standard HD-9 is BendPak’s workhorse 4 post — 9,000 lb capacity, full-width runways, and a rise that clears most trucks and SUVs with room to spare for underbody work. It’s the model most home garage owners and small shops land on because it’s the most straightforward configuration: two runways, four columns, a set of ramps, and simple cable-and-pulley leveling. For straightforward CV axle and half-shaft replacement where you’re not doing full suspension teardown, this is plenty of lift, and it’s the one we quote most often for standard-cab and crew-cab half-ton trucks.

Where the base HD-9 falls short is if you’re regularly dropping wheels and axles and want a jack integrated into the deck. Without an add-on jack, you’re rolling a floor jack or transmission jack onto the runway itself, which works but isn’t ideal on uneven concrete. That’s the exact gap the SP and WX variants below are built to close, and it’s worth understanding before you order.

HD9SP vs HD9WX: Which Variant Fits Your Bay

The HD9SP adds a sliding bridge jack built into the runway system, which is the single biggest upgrade for anyone doing repeated CV axle, half-shaft, or brake work. Instead of rolling a separate jack in from the side, the bridge rides along a track between the runways so you can position it directly under the axle or subframe point you’re working, then raise it independently of the main lift. For northern Missouri and Iowa shops doing volume half-shaft work, this single feature usually pays for itself in reduced job time within the first few months.

The HD9WX, by comparison, is built around width — a wider runway and column spacing for dually trucks, larger SUVs, and wide-track off-road builds. If your overlanding rig has portal axles, a wide-track kit, or oversized flares, the standard HD-9 or HD9SP runway width can feel tight when you’re trying to walk around the vehicle while it’s up. We had a customer weighing the HD9WX against the standard GP9XT for a crew-cab half-ton used for both personal trucks and occasional work, and the deciding factor ended up being ceiling height combined with runway width, not price. Get both numbers before you order.

Rise Height and Ceiling Clearance for Lifted Trucks

One detail that trips up a lot of builders: the BendPak HD-9 4 post car lift needs headroom for both the platform rise and the vehicle height once it’s up, and lifted trucks eat that headroom fast. An 11-foot ceiling, which is common in newer detached garages and pole barns across Iowa and northern Missouri, is workable for most stock-height trucks but gets tight once you add a lift kit and oversized tires. We always ask for ceiling height and truck height with tires mounted before quoting, because rise height on the HD-9 platform itself is fixed — you can’t split the difference after it’s installed.

If your build regularly changes — different trucks, different tire sizes, project vehicles coming and going — factor in a few extra inches of buffer rather than cutting it close. We’ve had installs where a customer’s daily driver fit fine but a friend’s build with a 4-inch lift and 37s wouldn’t clear, and there’s no adjustment on a 4 post runway system once it’s bolted down. Measure the tallest thing you’ll ever put on it, not the average.

Runway Length and Approach Ramps for Long-Wheelbase Trucks

Crew-cab and extended-cab trucks with towing packages or bed extensions run long, and runway length becomes a real constraint if your bay is anything less than generous. The HD-9 platform comes in different length configurations, and matching that to your actual longest vehicle — not your average vehicle — avoids the awkward situation where the tailgate or front bumper overhangs the ramp. For CV axle and half-shaft work specifically, you also want enough flat runway ahead of the wheel well to safely position a floor jack or the sliding bridge without fighting the ramp incline.

Approach ramp angle matters too, especially for lowered vehicles or trucks with front skid plates and long overhangs. Steep ramps cause plastic front bumpers and skid plates to scrape on the way up, which is a frustrating way to start a job that’s supposed to be about protecting the underside of the vehicle, not damaging it before it’s even elevated. We spec ramp angle against customer vehicles case by case rather than assuming one configuration fits everything that rolls through a given bay.

A Recent Iowa Case Study: HD9SP Install for a Fleet and Personal-Use Shop

We recently quoted and followed up on an HD9SP 4-post install for a shop in the West Des Moines area that wanted a 9,000 lb four-post lift specifically because they were running a mix of personal trucks and light fleet work. The lead came in wanting a 9K capacity four-post, and after walking through the space — standard concrete slab, adequate ceiling height, single-bay placement — the HD9SP was the clear fit over the base model because of the volume of underbody work they expected, including regular half-shaft and CV axle service on trucks that saw real off-pavement use.

What made this case useful as a comparison point is that the customer had initially been comparing the HD9SP against the GP9XT, another BendPak four-post in a similar capacity class, and the deciding factor wasn’t price — it was the integrated jack bridge versus a simpler runway. For a shop doing occasional oil changes and tire work, the GP9XT would have been fine and cheaper. For a shop planning on CV axle and driveline work as a recurring job type, the SP’s bridge jack made the difference, and that’s the exact kind of use-case-first decision we walk every customer through before a quote goes final.

Freight, Delivery, and Install Considerations Across State Lines

Whether you’re in Iowa or shipping into northern Missouri, freight and delivery logistics on a four-post lift are not trivial — these units ship on pallets that require a loading dock or forklift, and setting that up ahead of time saves a wasted delivery attempt. We regularly coordinate with customers who have their own forklift for unloading, which speeds things along, but if you don’t have equipment on-site, tell us before the truck is scheduled so we can arrange a liftgate delivery instead.

Installation itself on a BendPak HD-9 4 post car lift is straightforward for a crew that’s done it before, but the anchor points need a slab that meets the specified thickness and cure time, and that’s the single most common install delay we see. If your slab is questionable — cracked, thin, or unknown age — get it evaluated before the lift shows up rather than after, because working around a bad pour after the equipment has already arrived costs everyone time and money.