Call or Text
7 Days a Week
Body-Solid G9B vs G6B Home Gym: Complete Comparison
TL;DR: If you want a dual-stack home gym for two people with a built-in leg press and more room to expand over time, the Body-Solid G9B is the better fit. If you want a single-stack, space-friendly home gym with a guided press system and optional add-ons like a leg press attachment, the Body-Solid G6B is the smarter choice for solo training and tighter rooms.
Table of Contents
- Overview: What You’re Really Comparing
- Quick Answer
- Side-by-Side Comparison Table
- Overview: Body-Solid G9B
- Overview: Body-Solid G6B
- The Biggest Difference
- Key Differences That Matter
- Space Planning and Environment Fit
- Grow-With Options and Compatible Accessories
- Warranty and Long-Term Ownership
- Assembly and White Glove Installation
- Final Verdict: Which One Should You Buy?
- Frequently Asked Questions
- About Competitors Outlet
- About the Author
Overview: What You’re Really Comparing
If you’re deciding between the Body-Solid G9B and the Body-Solid G6B, you’re not just comparing two machines—you’re choosing between two different home gym styles:
- G9B: a dual weight stack home gym designed for smoother multi-user workouts and built-in lower-body training via a dedicated leg press.
- G6B: a single weight stack, multi-station home gym designed for efficient full-body training in a smaller footprint, with optional attachments to expand later.
Quick naming note: many shoppers still recognize older naming around these models. The current black-finish G9 model is commonly listed as G9B, while some older searches and product references may still use G9S. The current G6 model is listed as G6B, though older content and SKUs may still reference G6BR. This guide uses the current product names for clarity.
For a full lineup breakdown, see our Best Body-Solid Home Gym Models Compared: Ultimate Buyer’s Guide.
Quick Answer: G9B or G6B?
Choose the Body-Solid G9B if you want the bigger, more complete home gym. It is the better fit for shared training spaces, serious lower-body work, and buyers who want the built-in leg press included from the start.
Choose the Body-Solid G6B if you want the more space-efficient single-stack machine. It is the better fit for solo training, smaller rooms, and buyers who want Bi-Angular pressing with the option to add attachments later.
If you are building a dedicated home gym for multiple users, the G9B makes more sense. If you are building a serious but more compact strength setup, the G6B is usually the smarter choice.
Choose the G9B if:
- You want a home gym for two people (dual stacks = less waiting and fewer interruptions)
- You want a built-in leg press with a 2:1 ratio (up to 420 lb resistance at the plate)
- You like the idea of adding attachments and upgrading resistance over time
Choose the G6B if:
- You train mostly solo and want a compact selectorized home gym
- You want guided pressing via Bi-Angular® press arms and full-body station coverage
- You want the option to add a leg press attachment later without committing to a large dual-stack footprint
Side-by-Side Comparison Table
Overview: Body-Solid G9B
The G9B is where Body-Solid moves from “home gym” into “private studio” territory. It uses two independent 210 lb stacks (each upgradeable to 260 lbs), and the leg press runs on its own stack with a 2:1 ratio, delivering up to 420 lbs of resistance at the press plate.
That separation matters. On a single-stack system, upper-body and lower-body stations compete for the same resistance source. On the G9B, pressing, pulling, and leg work operate more independently, and two people can train with fewer interruptions.
For an in-depth breakdown, read the Body-Solid G9B review here.
Overview: Body-Solid G6B
The G6B is a high-performing single-stack home gym designed to cover full-body strength training without demanding a large footprint. It’s known for its Bi-Angular® press arms, which guide pressing through a converging range of motion that many users find smoother and more natural than straight-path pressing.
For buyers who train mostly solo, want guided stations, and may want to add an attachment later, the G6B is often the more practical long-term choice.
For an in-depth breakdown, read the Body-Solid G6B review here.
The Biggest Difference: Training Flow
The biggest difference is not just size. It is training flow.
The G9B is built around dual-stack training, a built-in leg press, and smoother shared-use workouts. It is the better option when two people may train on the machine, or when lower-body pressing is a must-have from day one.
The G6B is built around single-stack efficiency, Bi-Angular pressing, and a smaller-space setup. It is the better option when one person is training most of the time and wants a serious all-in-one machine without taking over the room.
That is the core decision: multi-user training and built-in leg press versus space efficiency and advanced single-stack pressing.
Key Differences That Matter
1) Dual stack vs single stack (the real-world difference)
This is the main decision. If two people train regularly, dual stacks reduce friction: fewer weight changes, fewer interruptions, and easier “training together” sessions. If you train solo, a single stack is usually enough—and often easier to fit into a garage or basement.
2) Leg training: included leg press vs optional leg press attachment
The G9B includes a dedicated leg press/calf press station out of the box. The G6B includes leg extension/leg curl work standard, and offers a leg press attachment as an optional add-on for buyers who want lower-body pressing later.
3) Footprint and room layout
The G6B is the easier machine to fit into tighter spaces. The G9B is larger and best treated as a dedicated training anchor.
4) Expandability and upgrade planning
Both can grow, but the G9B has a broader accessory ecosystem and dual-stack upgrade path. The G6B can expand meaningfully too—but it’s designed around keeping the footprint efficient.
Space Planning and Environment Fit
- G9B footprint: ~89" L x 72" W x 84" H (best in a dedicated garage or basement training area)
- G6B footprint: ~84" L x 58" W x 84" H (more room-friendly for tighter spaces)
Practical tip: plan clearance around entry/exit points and the leg press area (for G9B, or for G6B if you add the leg press attachment later). You’ll enjoy the gym more if you’re not training tight against a wall.
Grow-With Options and Compatible Accessories
G9B compatible accessories
- Vertical Knee Raise / Dip Station (#GKR9)
- Inner/Outer Thigh Attachment
- Rower Attachment
- Weight stack upgrades (210 lb to 260 lb per side, sold separately)
- Optional aluminum pulley replacement kits
G6B compatible accessories
- Premium Leg Press Attachment
- Inner/Outer Thigh Attachment
- Rower Attachment
- Upgradable 50 lb selectorized weight stack (210 lb to 260 lb)
Planning note for the G6B: the leg press and inner/outer thigh attachments use the same attachment position, so you’ll typically choose one installed at a time based on how you train.
Warranty and Long-Term Ownership
Both the G9B and G6B are backed by Body-Solid’s In-Home Lifetime Warranty:
LIFETIME: Frame & Welds
3 YEARS: Pulleys, Bushings, Bearings, Hardware
1 YEAR: Cables, Upholstery, Grips and all other components
This matters for long-term ownership. A selectorized home gym is not a short-term purchase—buyers want to know replacement parts and support will be available years down the line.
Assembly and White Glove Installation
Both models arrive as multi-box deliveries and require time and organization to assemble. The G9B is larger and heavier, so plan extra space during setup and ideally have two people available.
Professional white glove delivery and installation are available. If you’d like white glove service, contact Competitors Outlet before placing your order so we can confirm availability and scheduling for your location.
Final Verdict: Which One Should You Buy?
If you want the most complete setup in this comparison, choose the Body-Solid G9B. It is the better fit for larger home gyms, shared training spaces, and buyers who want a built-in leg press instead of adding one later.
If you want the smarter compact choice, choose the Body-Solid G6B. It gives you serious full-body training, Bi-Angular pressing, and upgrade flexibility without the size commitment of a dual-stack gym.
The simplest way to decide: choose the G9B for dual-stack training and built-in lower-body pressing. Choose the G6B for single-stack efficiency, better space fit, and a premium press system.
Both are long-term machines. Your decision should be based on space, training flow, whether one or two people will use the gym, and whether you want the leg press included now or added later.
Compare the Previous Body-Solid Model
If you are not sure you need to jump from a premium single-stack gym into a dual-stack system, read the Body-Solid G5B vs G6B comparison. That guide explains when the G6B is worth stepping up from the G5B and when the G5B may already be enough.
For a wider lineup view, read the Best Body-Solid Home Gym Models Compared guide.
You can also compare the product pages directly:
Frequently Asked Questions
Is the G9B the same as the G9S?
The G9B is the current black-finish version of the G9 model. Many buyers still refer to it as the G9S because that name is widely recognized.
What’s the biggest difference between the G9B and G6B?
The G9B is a dual-stack system with a built-in leg press designed for smoother multi-user training. The G6B is a single-stack system designed to be more space-efficient, with optional attachments (including a leg press attachment) to expand later.
Does the G6B include a leg press?
The G6B includes leg extension and leg curl stations standard. A leg press attachment is available as an optional add-on if you want lower-body pressing later.
Can the weight stacks be upgraded?
Yes. The G6B stack can be upgraded from 210 lb to 260 lb. The G9B has two 210 lb stacks and can be upgraded to 260 lb per side (sold separately).
How much space do I need for each gym?
The G6B fits more easily in tighter rooms. The G9B is larger and best in a dedicated garage or basement training area. Plan extra clearance around the machine for safe entry/exit and comfortable use.
Is white glove delivery and installation available?
Yes. Professional white glove delivery and installation are available. Contact us before ordering so we can confirm availability and scheduling for your location.
Do both have the Body-Solid lifetime warranty?
Yes. Both are backed by Body-Solid’s In-Home Lifetime Warranty, including coverage for the frame, cables, pulleys, and upholstery under normal wear.
About Competitors Outlet
CompetitorsOutlet.com was built around a simple idea: everyone deserves an outlet — a place to put their energy, focus, and discipline to work.
We help customers choose equipment that fits real rooms and real training habits, with real human support for the life of your purchase—whether you’re comparing models, planning space, or thinking through long-term compatibility.
Performance, Powered.
About the Author
Shelly LeSun is the co-founder of Competitors Outlet, a 16-time marathon finisher, triathlete, and dedicated strength training enthusiast. With a background in product development, Shelly has always been curious about how equipment is built, how it performs over time, and what actually makes sense in real training spaces.
Need Help Choosing Equipment?
Get helpful guides, comparisons, and exclusive offers.
Leave a comment