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The Force USA® G4 All-In-One Trainer delivers the versatility of a complete gym setup with the added convenience of dual weight stacks, no plate loading required. This compact powerhouse combines a Power Rack, Smith Machine, Functional Trainer, and more, all engineered for high performance in your home gym. Level up your strength, speed up transitions, and train harder, without ever leaving the house.
Preorder Available
The Force USA Leg Extension & Curl Attachment is an add-on module for Force USA G-Series All-In-One trainers that enables leg extension and hamstring curl movements. It’s built from high-tensile steel with durable, sweat-resistant foam padding, and supports Olympic-sized weight plates. Compatible via included 16 mm and 25 mm pins with multiple Force USA models (e.g. G1-V2, G3-V2, G6-B). The frame carries a lifetime warranty; parts are covered for two years and upholstery for 90 days.
The Force USA Jammer Arms are adjustable attachments designed for Force USA All-In-One trainers, allowing users to perform pressing, rowing, and explosive strength exercises such as bench presses, shoulder presses, and deadlifts. They attach securely to 5 × 5 cm uprights and include 16 mm and 25 mm pins for compatibility with multiple Force USA G- and C-Series models. Built from heavy-duty steel, the arms come with a lifetime frame warranty and two-year parts coverage.
The Force USA Sliding Bench is a multifunctional bench attachment designed for the Force USA C-series (e.g. C10, C20) all-in-one trainers. It connects directly to the machine’s dual weight stacks via cables, allowing use as a flat/incline bench, sliding leg press, hack squat, leg curl/extension, and preacher curl—all without needing weight plates. Its frame supports heavy loads in flat mode (up to ~450 kg), features a space-saving vertical storage option, and comes with a 150 kg working load rating for most functions.
Sorry We're Temporarily Out of Stock.
Sorry We're Temporarily Out of Stock.
BACK IN STOCK ETA | 8/5/2026

Gone are the days of fumbling with plates mid-workout. The G4 comes standard with dual 77 kg (170 lb) weight stacks, offering a smooth, efficient resistance experience on the Functional Trainer. And when you're ready to push your limits, you can upgrade each stack to 100 kg (220 lb). This feature saves you time, keeps your workouts flowing, and allows for fast-paced supersets and circuits, perfect for building serious strength and endurance.
Space tight? No worries. The G4 is a full-functioning home gym packed into a footprint just 192 cm wide and 220 cm high. Whether you're fitting out a spare room or a garage gym, you’ll get a Power Rack, Functional Trainer, Smith Machine, Chin-Up Station, and Landmine Attachment all in one. It’s the ultimate space-saving solution without compromising training variety or intensity.
The integrated Smith Machine includes a 15.8 kg (35 lb) knurled bar with dual 30 cm (12") sleeves, supporting up to 350 kg of load. Whether you’re bench pressing, squatting, or shoulder pressing, this smooth, counterbalanced system provides safer, controlled movement, especially useful when training solo.
With a 2:1 pulley ratio, the G4 gives you precise control over your resistance. Load 45 kg (100 lbs) and feel 23 kg (50 lbs), ideal for isolated movements, rehab-focused work, or when mastering perfect form. This ratio enhances training versatility and makes progression smoother and more manageable.
Durability meets rock-solid performance with Force USA’s reinforced low-frame base and stabiliser pads. Unlike other pedestal-foot options on the market, the G4 stays grounded through the most intense sets. The 6.2 mm nylon-coated mil-spec aircraft cable, rated up to 907 kg (2000 lbs), ensures lasting reliability so you can push hard every session.
Right out of the box, the G4 comes fully loaded with premium attachments including: a tricep rope, Olympic collars, D-handles, landmine row handle, carabiners, extension chains, short straight bar, straight connection bar, J-hooks, and front spotter arms. That means you’re ready to train from day one, no extra purchases needed.
Unlock the secret to a seamless workout experience with the new Force USA Training app! Say goodbye to the overwhelm of planning your training sessions and hello to a streamlined approach that allows you to flow through your workouts. Force USA's expert strength coaches have recorded and organised hundreds of tutorial videos, giving you access to the knowledge and guidance needed to create an effective strength training program. Or simply browse through the videos and cherry-pick your favourite exercises to create your own workout routine. It’s never been this easy to train at home.
Set up with confidence using our interactive 3D assembly experience. Rotate, zoom, and follow each step in real time to see exactly how every component fits together. Designed to remove guesswork and reduce setup time, this guided experience makes assembling your Force USA equipment clear, intuitive, and stress-free from start to finish.
Available via the free Force USA App.
INCLUDED ATTACHMENTS
Over a dozen accessories are included, such as J-hooks, Safety Spotter Arms, and more.
No, these are sold separately on this site.
The barbell uses Olympic plates only. The pulley system works with either standard or Olympic plates.
Assembly takes about 4 hours. All tools and hardware are included. It can be done solo, but help and ratchets make it faster.
No. Assembly is required, with tools and instructions included. Optional professional setup is available at the top of this page.
At least 8' 4" to perform full pull-ups with your head above the bar:
Pulley uprights are 48" apart. Since the pulleys rotate, you can stand outside the rack for a wider fly angle.
Yes—50 numbered adjustment points make alignment fast and easy.
The G4 is suitable for users up to 7' 1" tall.
Shipping weight—including boxes, packing, and pallet—is approximately 362 kg (800 lbs).
The Force USA G4 has everything you need. The attachments provided are more than enough for any beginner to get started. The luxury of having this beast set up at home provides value for the whole family. Getting plenty of use out of the G4 it has not let us down once. Build and set is simply as easy as building any other unit. We couldn’t be more happier with what the G4 has done for us so far! Props to Force USA for producing yet another crowd pleaser amongst the very many suitable functional trainers.
Hi Keane,
Thank you for your kind words and for choosing the Force USA G4 All-In-One Trainer! We are happy to hear that you have found it to be a complete game changer and that it has exceeded your expectations. Thank you for your support and for choosing Gym and Fitness as your trusted home fitness equipment supplier.
Happy training!
GAF Team
Fantastic functional trainer, every part is super solid and it was relatively straightforward to put together, I’d highly recommend this for anyone looking to up their garage gym game!
Hi Josh,
Thank you so much for taking the time to leave us a review. We're thrilled to hear that you're enjoying your Force USA G4 All-In-One Trainer and that it's helping to up your garage gym game! Keep crushing those workouts!
Happy training!
GAF Team
Not many other competitors are offering the features of this machine at this price point. Having the weight stack made my workouts super efficient, and I didn’t have to worry about balancing weights on each side of the horns on a plate loaded cable system.
Took about 6 hours to put together, instructions could certainly be better, there were a few errors in there, but a bit of common sense and you’ll work it out.
All in all, I’m absolutely stoked with the purchase. Highly recommend.
Hi Josh,
Thank you so much for taking the time to leave such a positive review about the Force USA G4 All-In-One Trainer! We understand that the assembly process can be a bit time-consuming, so we appreciate your patience in working through any errors in the instructions. We hope you continue to have great workouts with your new trainer and thank you for recommending it to others.
Happy training!
GAF Team