Parcel ground shipping
Items weighing 149 lb or less ship by ground parcel rather than freight.
Bars, handles and straps shown in photos are not always included. Check the description, or add attachments to your order.
Receive by Dec 10estimated, may change
Remanufactured
StairMaster Gravitron 2000 Assisted Chin-Dip
$1,995.00
4.8
Save $2,504 (55%)
vs $4,499 new
ConditionRemanufactured
Availability
Out of Stock
Pay over timeBusiness financing
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Leave your email and we’ll tell you the moment this machine is available again. No newsletter, just the restock.
See similar machines in stock →Parts & Labor, Fully Rebuilt
Remanufactured to full mechanical spec, covered from the day it lands. Wear items are not covered.
Bars, handles and straps shown in photos are not always included. Check the description, or add attachments to your order.
Shipping calculator
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Machine overview
Condition: Remanufactured
Warranty: 1 Year Parts & Labor (Extended Available)
Returns: 30-Day Returns & Exchanges
Shipping: Driveway Delivery, or Inside Delivery & Assembly
Receive by: Dec 10
How It Ships: Fully Assembled
Delivery options
How delivery works
Your item’s shipping method and price are confirmed in the shipping calculator and at checkout. Here is what each delivery path means.
Driveway freight delivery
Your equipment is palletized and protected. The freight carrier schedules delivery, then uses a liftgate to lower it to your curb or driveway. Moving it inside and unpacking it are up to you.
Inside delivery & assembly
When selected and available for your address, the delivery team brings the equipment into the room, assembles and tests it, then removes the packaging.
Full truckload
For commercial builds and multi-pallet orders, a dedicated trailer keeps the full order together in one delivery. We confirm the unloading plan before the truck ships.
Size: 49" × 52" × 80" tall
What Remanufactured Means
Every remanufactured machine is fully disassembled, deep cleaned, repaired or re-parted to factory spec, then tested under load before it ships. Backed by one year parts and labor, with extended coverage available.
Warranty Coverage
New and remanufactured equipment are both covered for one year, parts and labor, backed by us. Extended protection is available on either through BAG Care+. Used equipment is sold as-is with no warranty coverage, and is described honestly before you buy. We service nationwide - every ZIP code in the country - so coverage travels with the machine.
30-Day Returns & Exchanges
Change your mind within 30 days of delivery and you can return the machine or exchange it for a different size, color or configuration.
Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns and exchanges. Freight items must go back packaged to the same standard they arrived in. We will tell you exactly what that means before anything is collected.
Anything that arrives damaged or fails under warranty is handled separately and carries no restocking fee. Full terms are in our Returns, Exchange & Refund Policy.
Add before it ships
Before the freight bookingCoverage and accessories have to go on the same booking as the machine. Add them here and they travel together.
Extended warrantyRecommendedEvery machine includes 1 year parts and labor.
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Added as separate lines on your order.
Customer reviews
Real Gyms. Real People.
See why gym owners and home gym builders trust Build A Gym with their gyms.
4.8
★★★★★
280 reviews on Google
Write a review
-
2 days ago
★★★★★
CTX/ Build-a-Gym absolutely CRUSHED IT! I had been struggling with numerous manufacturers trying to get a seated leg press/extension that’d ship to Alaska. When I found CTX, they went above and beyond to get my Fractal packaged and shipped with no hassle. I HIGHLY recommend these folks to anyone looking for solid commercial quality equipment for their home.
Read on Google
Thank you guys!!! -
6 days ago
★★★★★
I own a gym in Northern California and have ordered from this company many times, they are quality! Great deals, great communication, great products!
Read on Google -
2 weeks ago
★★★★★
Nicole was extremely helpful, communication was tops, takes care of business. Thank you!
Read on Google -
4 weeks ago
★★★★★
Equipment is awesome. Delivered and setup in the garage. Will be going back for more
Read on Google -
4 weeks ago
★★★★★
By far the best equipment I’ve had and very reliable for my home and it’s also for a commercial gym also I have The Zaia
Read on Google -
a month ago
★★★★★
Had some issues with the assembly process. Dillan was quick to reach out and set up a video call for assistance. He provided follow ups to ensure everything was squared away. Great customer service!
Read on Google -
a month ago
★★★★★
Great communication, products, and I'm very happy with what I purchased from them. I will be back!
Read on Google -
2 months ago
★★★★★
Just want to say thank you to the team at CTX!! Not only was shipping fast and efficient, but customer service was outstanding!! Any question that was needed to be answered was meet with a quick response. Thank you again!!
Read on Google -
2 months ago
★★★★★
Dillon was very helpful, patient with answering all my questions, very knowledgeable. He insured I had all the necessary answers before I made my purchase. Thanks Dillon, great customer service!
Read on Google -
3 months ago
★★★★★
I was thinking about getting Ozempic, but I’m not in the mood to go blind yet. So I decided I’d do it the old fashioned way and called CTX.
Read on Google -
3 months ago
★★★★★
CTX Built is a great company to work with. Excellent communication and customer service. Their team was easy to work with and extremely helpful. Would do more business with them and I plan to.
Read on Google -
3 months ago
★★★★★
CTX stands by their products. I recently purchased a Precor elliptical from them & it arrived with a mechanical flaw. They coordinated with a technician to get my product fixed like new. They accomplished this despite the fact that my home was two states away. Special thank you to Nichole for staying accessible and attentive throughout the process!
Read on Google -
3 months ago
★★★★★
Great product and awesome leadership. Equipment was straight forward to build and team is always responsive when needing information or any help whatsoever. So glad I found them for outfitting my gym, best decision I have ever made for my business!
Read on Google -
3 months ago
★★★★★
Absolutely best in business! Not only is Dillon just genuinely a great human being, he’s real and honest. Loved everything I’ve gotten from him and the team. I’m about 10-15 pieces in deep with him and not stopping anytime soon! Absolutely recommend hitting these guys up for home/commercial equipment. New or refurbished!
Read on Google -
5 months ago
★★★★★
Excellent selection of products with a large selection, consultants will help you decide
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5 months ago
★★★★★
Dillion was great to work with!! Super friendly, quick turn around time, and great at communicating! The guys who delivered it Robb and JJ were also amazing. They came prepared and were very fast and efficient. They offered to help us move around other equipment to ensure we loved our gym! Super nice people and an amazing company! I would highly recommend working with them. Oh and the equipment itself is high quality and looks great in our home gym!
Read on Google
Rebuilt in our Jarrell, TX shop
What remanufactured means here
Every machine we sell as remanufactured goes through the same process, whatever the brand or the price. Not a wipe-down and a price tag.
-
Inspected and stripped down
Assessed frame to console, then taken apart and checked part by part. Nothing gets judged from the outside.
-
Moving parts rebuilt or replaced
Every moving and touched component, from belts and cables to bearings, bushings and grips, is evaluated and rebuilt or replaced, then the machine gets a full cosmetic restoration.
-
Refinished and rebuilt to spec
Electronics bench-tested, frames and welds checked, panels refinished, then reassembled to the manufacturer's specification.
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Tested under load
A full operational cycle under load before it ships. Anything that fails the final check goes back through service, not onto a truck.
Get an email when new machines land
Good units go fast. We'll email you when new machines land - nothing else.
Shop photo
Real photo, similar machine
Same shop, same process
Every machine we sell goes through the same shop as this Matrix Aura Leg Press, photographed recently in Texas.
- Model shown
- Matrix Aura Leg Press
- Stage
- Palletized
- Photographed
- Nov 11, 2026
- Where
- Our shop in Texas
- Headed to
- New York
- Wrapped by
Rob G.
- Inspected frame to console, then fully disassembled
- Every moving and touched component rebuilt or replaced
- Full cosmetic restoration
- Tested under load before it ships
This photo shows a Matrix Aura Leg Press, not this exact model. Every machine we sell goes through the same process.
See the full remanufacturing processProduct details
Commercial-grade equipment, inspected and supported by warranty.
The StairMaster Gravitron 2000 delivers assisted chin-up, pull-up, and dip training with a 180 lb stack in 10 lb increments, exclusive linear tracking mechanism, and heavy-duty commercial construction on a 511 lb frame - the counterbalance system works by adding the selected stack weight to the upward force available to the user: a 180 lb user selecting 60 lb of assistance effectively trains at 120 lb of body weight through the movement. This allows users who cannot yet complete a full unassisted chin-up or dip to train the exact movement pattern at a manageable load, building the specific strength required for the unassisted version. 10 lb increments enable precise, gradual progression - reducing assistance by one increment at a time as strength develops is the most controlled path toward unassisted bodyweight performance. The exclusive linear tracking mechanism moves the knee platform on a fixed linear path rather than through a pivot arc, which keeps the user's body traveling in a consistent vertical line rather than swinging forward or backward at the top of the movement - reducing the joint stress that pivot-based systems produce at end range.
Chin-up, pull-up, and dip all accessible from the same station. 511 lb StairMaster commercial frame, 180 lb stack, 10 lb increments, 49" × 52" footprint. Remanufactured.
Supported exercises
Assisted Chin-Ups Assisted Pull-Ups Assisted Dips Negative Chin-Ups Negative Dips
Muscles targeted by function
Chin-Up / Pull-Up
Latissimus Dorsi Biceps Brachii Rhomboids Trapezius Rear Deltoids Brachialis Core
Dip
Pectoralis Major Triceps Brachii Anterior Deltoids Serratus Anterior Core
Key features
180 lb Stack · 10 lb Increments - Precise Progression to Unassisted
Counterbalance adds selected stack weight to upward force - a 180 lb user at 60 lb assistance trains at an effective 120 lb through the full movement pattern. 10 lb increments allow precise, gradual reduction in assistance as strength develops - the most controlled progression path toward unassisted chin-up and dip performance. Trains the exact movement pattern rather than a substitute exercise.
Linear Tracking Mechanism - Vertical Path, Reduced Joint Stress
Exclusive linear tracking moves the knee platform on a fixed vertical path rather than through a pivot arc - keeping the user's body traveling in a consistent vertical line throughout the movement. Pivot-based systems allow the platform to swing forward or backward at end range, creating joint stress as momentum redirects. Linear tracking eliminates this by constraining motion to a single axis.
Specifications
Dimensions (L × W × H)
49" × 52" × 80"
Machine Weight
511 lb
Weight Stack
180 lb · 10 lb Steps
Linear tracking · Assisted chin / pull-up / dip · 511 lb frame
Design
Linear Track · 180 lb · 10 lb Steps · 511 lb
Linear tracking mechanism · 180 lb counterbalance stack · 10 lb increments · Chin-up, pull-up & dip · 511 lb commercial frame · 49"×52" footprint
1. What are the exact dimensions and footprint of the StairMaster Gravitron 2000?
This machine measures 49 inches front to back, 52 inches wide, and 80 inches tall, with a footprint of 18 square feet. Allowing a bit of extra clearance around it is a good idea for ease of use.
2. How does the resistance system work on this machine?
It uses a 180 lb weight stack in 10 lb increments to provide adjustable assistance for chin-ups, pull-ups, and dips. The selected weight is added to your upward force, making the exercise easier as you build strength.
3. What exercises and muscle groups can I train with this machine?
You can perform assisted chin-ups, pull-ups, dips, and their negative variations. These movements target muscles including the lats, biceps, rhomboids, triceps, chest, shoulders, and core.
4. What is unique about the Gravitron 2000 compared to other assisted chin-dip machines?
It features an exclusive linear tracking mechanism that keeps the knee platform moving in a straight vertical line, reducing joint stress compared to pivot-based systems that swing.
5. What condition can I expect this remanufactured unit to arrive in?
Remanufactured machines are fully disassembled, deep cleaned, repaired, and tested in our Texas shop, with worn parts replaced. Cosmetic marks from previous use may remain.
6. What are the delivery and assembly options for this machine?
You can choose curbside freight delivery or have our crew bring it inside, assemble it, and remove packaging. Stairs require a separate quote; see the shipping calculator on the product page for details.
30-Day Returns & Exchanges
Buy with confidence. Every Build A Gym order includes a 30-day window to return or exchange, whether you want a different size, color or configuration. Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns; warranty and damage claims carry no restocking fee. Full details in our Returns, Exchange & Refund Policy.
The StairMaster Gravitron 2000 delivers assisted chin-up, pull-up, and dip training with a 180 lb stack in 10 lb increments, exclusive linear tracking mechanism, and heavy-duty commercial construction on a 511 lb frame - the counterbalance system works by adding the selected stack weight to the upward force available to the user: a 180 lb user selecting 60 lb of assistance effectively trains at 120 lb of body weight through the movement. This allows users who cannot yet complete a full unassisted chin-up or dip to train the exact movement pattern at a manageable load, building the specific strength required for the unassisted version. 10 lb increments enable precise, gradual progression - reducing assistance by one increment at a time as strength develops is the most controlled path toward unassisted bodyweight performance. The exclusive linear tracking mechanism moves the knee platform on a fixed linear path rather than through a pivot arc, which keeps the user's body traveling in a consistent vertical line rather than swinging forward or backward at the top of the movement - reducing the joint stress that pivot-based systems produce at end range.
Chin-up, pull-up, and dip all accessible from the same station. 511 lb StairMaster commercial frame, 180 lb stack, 10 lb increments, 49" × 52" footprint. Remanufactured.
Supported exercises
Assisted Chin-Ups Assisted Pull-Ups Assisted Dips Negative Chin-Ups Negative Dips
Muscles targeted by function
Chin-Up / Pull-Up
Latissimus Dorsi Biceps Brachii Rhomboids Trapezius Rear Deltoids Brachialis Core
Dip
Pectoralis Major Triceps Brachii Anterior Deltoids Serratus Anterior Core
Key features
180 lb Stack · 10 lb Increments - Precise Progression to Unassisted
Counterbalance adds selected stack weight to upward force - a 180 lb user at 60 lb assistance trains at an effective 120 lb through the full movement pattern. 10 lb increments allow precise, gradual reduction in assistance as strength develops - the most controlled progression path toward unassisted chin-up and dip performance. Trains the exact movement pattern rather than a substitute exercise.
Linear Tracking Mechanism - Vertical Path, Reduced Joint Stress
Exclusive linear tracking moves the knee platform on a fixed vertical path rather than through a pivot arc - keeping the user's body traveling in a consistent vertical line throughout the movement. Pivot-based systems allow the platform to swing forward or backward at end range, creating joint stress as momentum redirects. Linear tracking eliminates this by constraining motion to a single axis.
Specifications
Dimensions (L × W × H)
49" × 52" × 80"
Machine Weight
511 lb
Weight Stack
180 lb · 10 lb Steps
Linear tracking · Assisted chin / pull-up / dip · 511 lb frame
Design
Linear Track · 180 lb · 10 lb Steps · 511 lb
Linear tracking mechanism · 180 lb counterbalance stack · 10 lb increments · Chin-up, pull-up & dip · 511 lb commercial frame · 49"×52" footprint
1. What are the exact dimensions and footprint of the StairMaster Gravitron 2000?
This machine measures 49 inches front to back, 52 inches wide, and 80 inches tall, with a footprint of 18 square feet. Allowing a bit of extra clearance around it is a good idea for ease of use.
2. How does the resistance system work on this machine?
It uses a 180 lb weight stack in 10 lb increments to provide adjustable assistance for chin-ups, pull-ups, and dips. The selected weight is added to your upward force, making the exercise easier as you build strength.
3. What exercises and muscle groups can I train with this machine?
You can perform assisted chin-ups, pull-ups, dips, and their negative variations. These movements target muscles including the lats, biceps, rhomboids, triceps, chest, shoulders, and core.
4. What is unique about the Gravitron 2000 compared to other assisted chin-dip machines?
It features an exclusive linear tracking mechanism that keeps the knee platform moving in a straight vertical line, reducing joint stress compared to pivot-based systems that swing.
5. What condition can I expect this remanufactured unit to arrive in?
Remanufactured machines are fully disassembled, deep cleaned, repaired, and tested in our Texas shop, with worn parts replaced. Cosmetic marks from previous use may remain.
6. What are the delivery and assembly options for this machine?
You can choose curbside freight delivery or have our crew bring it inside, assemble it, and remove packaging. Stairs require a separate quote; see the shipping calculator on the product page for details.
30-Day Returns & Exchanges
Buy with confidence. Every Build A Gym order includes a 30-day window to return or exchange, whether you want a different size, color or configuration. Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns; warranty and damage claims carry no restocking fee. Full details in our Returns, Exchange & Refund Policy.
Save 5%
Complete the room
The machines our install crew puts in the same room as this one - priced as one shipment, delivered in one booking.
$1,995.00
This machine
Bundle total
- Items
- $4,734.00
- Bundle price
- $4,497.30
- Estimated bundle saving
- −$236.70
- Everything arrives by
- Dec 10
One freight booking, one delivery window, one crew. Inside Delivery & Assembly available on the whole bundle.