DOF Reality H4 4-Axis Hero Motion Platform with Heave (Racing)

Four axes of real motion (pitch, roll, yaw and heave) on a full-platform Hero rig where your seat, wheel and pedals move as one. Feel the crest, the curb strike and the slide arrive together, exactly as the car does.

The DOF Reality H4 is a four-axis Hero motion platform built for drivers who want the whole car to talk to them. Pitch puts the load on your front tires under braking and pushes you back into the seat on corner exit. Roll leans the chassis through long sweepers. Yaw lets the rear step out so you can catch the slide with your hands and feet, not just your eyes. And heave, the fourth axis on the H4, adds the vertical hit: crests that go light, compressions that load up, curbs and kerbs that thump straight up through the platform.

Because this is a Hero full-platform design, everything that matters moves together. Your wheel, pedals and seat are bolted to one frame, so the forces stay perfectly in sync with your hands and feet. There's no disconnect between what you feel in your body and what you're doing at the controls: the rig drops you into the cockpit instead of shaking you in your chair.

The H4 runs DOF Reality's smooth Hero motors and a commercial-grade steel chassis rated to a 330 lb / 150 kg driver, so the motion stays crisp lap after lap. It's the top of the four-axis Hero line and the sweet spot for serious sim racers who want heave without stepping up to a six-axis price. This is genuinely the kind of rig we'd run ourselves.

What’s in the box

• Rigid commercial-grade steel rig (supports both a normal and an F1-style seating pose)
• Mounts for your seat and sliding rails
• Integrated power-drive motors
• 100-240V control unit with USB
• SimRacingStudio software license
• Quick-assembly tools
• Full 1-year warranty

Not included (buy separately): a seat, your wheel and pedals, and a VR headset (optional).

Technical specifications

How it moves

This is a full-platform rig: the seat and all your controls move together, so your hands and feet stay locked to the cockpit exactly as they would in the real thing.

• Pitch: tilts you forward and back so you feel acceleration and braking.
• Roll: tilts side to side so you feel the lean of every corner.
• Yaw: rotates the platform to reproduce rear traction loss (oversteer, drift and coordinated turns).
• Heave: drives the whole platform vertically for curbs, kerbs, bumps and (in the air) runway texture and turbulence.

Who it’s for

The H4 is built for the dedicated sim racer who has outgrown a static rig and wants the full language of the car (braking, cornering, oversteer and the vertical world of crests, compressions and kerbs), all in one platform.

• Step down: If you mostly want pitch, roll and yaw and don't need the vertical heave hit, the three-axis H3 saves you money while keeping the same smooth Hero feel.
• This rig (H4): The right call when curbs, crests and bumpy circuits are a big part of your racing: rally stages, road courses with aggressive kerbs, or any car where loading and unloading the tires vertically changes how you drive.
• Step up: Want the last two axes (surge and sway, so you also feel raw acceleration and lateral g-load)? The six-axis H6 is the full Hero experience, and you can get there later from the H4 with an upgrade kit of motors, frame parts and a new control box.

Games, platforms & compatibility

The H4 reads telemetry from 60+ racing titles and translates it into real motion across all four axes. That includes the sims serious drivers actually live in: iRacing, Assetto Corsa, Competizione & EVO, Le Mans Ultimate, rFactor 2, Automobilista 1 & 2 and RaceRoom, plus the broad library: Gran Turismo 7 & Sport, the F1 22-25 series, Forza Motorsport and Horizon 4/5, Project CARS 1/2/3, BeamNG.drive, Dirt Rally 2.0, EA Sports WRC, GRID and Wreckfest.

• PC (Windows): Fully supported across every title, with the deepest motion data and the most tuning control.
• Console (PlayStation / Xbox): Works directly with the select games that send telemetry over the network, and with the MagicBox adapter you no longer need a Windows PC between the console and the rig. Console games that don't send telemetry have no motion support today.
• VR: Supported via OpenVR Motion Compensation: the headset stays locked to the cockpit while the rig moves under you. Tested with Valve Index, Quest / Quest 2, Reverb G2, Vive, Pimax and more.

The H4 mounts a wheel base, pedals and shifter as a single rigid unit, so direct-drive bases and load-cell pedals stay solid even under hard heave. See the full breakdown of which titles drive which axes on our DOF support page.

Complete your rig

• Wheel & pedals: MOZA R5 / R9 CS / R9 GS direct-drive bundles with SR-P Lite pedals, plus a pedals quick-release
• Seats & harnesses: DOF Reality seat, Sparco R100/R333/Sprint, 4-point harness
• Immersion: SRS UShake 6 tactile cushion, SRS Hurricane wind package, Buttkicker mount
• Practicality: monitor mount, floor mat with DOF shield, protective covers, transport wheels, cable extensions
• Console: the MagicBox adapter connects a PlayStation or Xbox to the rig with no Windows PC in between, for titles that send telemetry natively (it carries motion only, not your wheel, pedals or controllers)

See the full Options, Add-Ons & Upgrades guide, or browse all accessories.

Future-proof: upgrade later

Upgrade to the full six-axis H6 later with the upgrade kit: three extra motors, frame parts and a new control box (current kit prices are on that page, and freight to the US and Canada is included in them). Every DOF Reality platform is modular; see how the upgrade paths work on our Options & Upgrades page.

Shipping & delivery

Your rig is built to order and ships insured from our European manufacturing partner, door to door with tracking. Freight to the United States and Canada is included in the price. The current lead time is in the Shipping and Returns tab. It arrives disassembled in two boxes (commercial-grade steel, so it is heavy by design = rigid and durable) and bolts together with the included tools; then you install SimRacingStudio and connect by USB. Depending on your country, the carrier may bill import fees (duties, taxes or brokerage) at delivery. These are not included in the price and are never charged at checkout. Full details on our Shipping & Delivery page.

Warranty, support & financing

Every platform includes a full 1-year manufacturer warranty, with an optional Extended +1 Year. As a US-based DOF Reality retailer, we back every order with free pre-sale consultation and hands-on setup help, and you can split the cost with Shop Pay, Affirm, or Klarna at checkout. Questions before you buy? Talk to us or call (952) 649-5710. See Warranty & Support.

Frequently asked questions

What does the fourth axis (heave) actually add for racing?

Heave is vertical motion: the whole platform lifts and drops. In a race car that's what you feel over crests, into compressions, across kerbs and on bumpy circuits. On a three-axis rig you get the lean and rotation of the car but not that up-and-down hit; the H4 adds it, so a curb strike or a dip in the road comes through your body the way it does on track. On rough surfaces and rally-style stages it's a real driving aid, not just immersion.

How is the H4 different from a seat-mover like the M2?

The H4 is a Hero full-platform rig: your seat, wheel and pedals are all bolted to one moving frame, so the forces stay perfectly aligned with your hands and feet. A seat-mover like the M2 moves only the seat while the controls stay fixed, which is a great entry point but a different feel. With the H4 there's no disconnect between what your body feels and what you're doing at the wheel.

Is the H4 strong enough for a direct-drive wheel and a stiff cockpit?

Yes. The H4 uses a commercial-grade steel chassis rated for a driver up to 330 lb / 150 kg, and because the wheel base and pedals mount to the same rigid platform, a high-torque direct-drive base and load-cell pedals stay planted even under hard motion. It runs DOF Reality's smooth Hero motors, so the input stays crisp over long stints.

Can I upgrade to the six-axis H6 later?

You can. The H4 shares its core with the H6, so you can add the remaining two axes (surge and sway) later with the upgrade kit, which covers three extra motors, the additional frame parts and a new control box (current kit prices are on that page). It's a sensible way to start at four axes now and grow into the full six-axis Hero platform when you're ready.

Will the H4 work in VR?

Yes. With OpenVR Motion Compensation enabled, your headset stays locked to the virtual cockpit while the rig moves beneath you, so the world doesn't swim as the platform pitches, rolls, yaws and heaves. It's tested with the Valve Index, Quest and Quest 2, Reverb G2, Vive, Pimax and more.