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Body Solid Pro Select Ab Crunch Back Extension - GCAB-STK

Build strength and protect your core with the Body Solid GCAB-STK—versatile, durable, and made for those serious about their fitness without breaking the bank.

Original price $2,315.00 - Original price $2,605.00
Original price $2,315.00
$1,850.00
$1,850.00 - $2,080.00
Current Price $1,850.00
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Ideal For

  • Fitness enthusiasts seeking a dual-function ab and back machine
  • Home gym owners wanting space-efficient equipment
  • Commercial gyms needing durable, versatile core training solutions

'Need to Knows'

  • Features 20 adjustable positions for a full range of motion
  • Compact design (55” L x 50” W x 71” H) fits most fitness spaces
  • Ultra-thick Durafirm™ upholstery for maximum workout comfort
  • Robust 2x4 steel mainframe ensures stability and durability
  • Includes a 7-position leg pad brace for proper muscle isolation

Warranty and Specs

  • Dimensions: 55” L x 50” W x 71” H
  • Weight: 399 lbs.
  • Commercial Warranty: Lifetime on Frame & Welds, 3 Years on Pulleys, Bushings, Bearings, Hardware, Plates, Guide Rods
  • In-Home Warranty: Lifetime on all components, including Cables, Upholstery, and Grips (normal wear)
Product Highlights Image

Body Solid Ab and Back Machine - GCAB-STK

body solid gcab stk pro select ab and back machine woman behind machine

Are you tired of cluttering your workout space with multiple machines for different exercises?

Meet the Body Solid Pro Select GCAB-STK, a dual-function powerhouse designed to target and sculpt your abdominal and back muscles effectively.

This unique machine combines the functionality of two machines into one, offering a low-cost solution for a comprehensive core and back workout.

Featuring a full-range cam design and an easy-to-use pop pin for 20 additional adjustments, it ensures enhanced control and a wider range of motion for all fitness levels.

The inclusion of a 7-position, fully upholstered leg pad brace further isolates your muscles, maximizing the effectiveness of each session.

Designed with both home and commercial applications in mind, this machine is a perfect addition to any fitness regimen, promising durability, comfort, and precision.

With its robust design, easy adjustability, and efficient use of space, the Body Solid Pro Select GCAB-STK Ab and Back Machine stands out as a top choice for anyone looking to enhance their core and back strength.

Whether for a home gym or a commercial facility, this machine delivers on quality, functionality, and results, backed by Body Solid's comprehensive warranty.



Ab Crunches and Back Extensions From One Selectorized Machine

Ultra–thick Durafirm upholstery:
Ensures maximum comfort during your workout sessions.

30-degree angle positioning:
Provides precise biomechanical movement for effective training.

2x4 mainframe steel:
Offers exceptional light commercial quality, ensuring durability and stability.

20-position adjustable cam:
Allows more range of motion, accommodating users of all fitness levels.

7-position foot brace:
Adapts to all size users, enhancing the machine's versatility and comfort.


gcab stk pro select ab and back machine corner view


Body Solid Ab and Back Machine GCAB-STK Specifications:

gcab stk pro select ab and back machine dimensions

  • Assembled Weight: 399lb
  • Assembled Dimensions: Length 55.00in x Width 50.00in x Height 71.00in

Body-Solid GCAB-STK Ab and Back Machine Warranty Info:

Body-Solid Commercial Warranty

  • LIFETIME: Frame & Welds
  • 3 YEARS: Pulleys, Bushings, Bearings, Hardware, Plates, Guide Rods
  • 1 YEAR: Cables, Upholstery, Grips (Normal Wear)

Body-Solid In-Home Warranty

  • LIFETIME: Frame & Welds
  • LIFETIME: Pulleys, Bushings, Bearings, Hardware, Plates, Guide Rods
  • LIFETIME: Cables, Upholstery, Grips (Normal Wear)

GCAB-STK Downloads

Body-Solid GCAB-STK Owner's Manual

Body-Solid GCAB-STK Data Sheet

Order Processing: Once your order is placed, you’ll receive a confirmation email immediately. Most Body-Solid orders process within 1–3 business days. If anything is delayed or backordered, we’ll contact you right away.

How Body-Solid Products Ship:

  • Ground Shipping: Smaller items such as benches, attachments, and accessories typically ship via FedEx or UPS in individual boxes.
  • Freight Shipping (Palletized): Larger machines, racks, multi-gyms, and heavy equipment ship via LTL freight on a pallet. The carrier will contact you to schedule a delivery appointment.

Important: If your order includes both ground and freight items, the warehouse may palletize everything together and ship it via freight to reduce damage and simplify delivery.

Delivery Timeline:

  • Processing Time: 1–3 business days.
  • Warehouse Handling: This product is expected to ship in 3-5 Business Days business days once processed.
  • Transit Time: Ground shipments typically arrive in 1–5 business days. Freight deliveries typically arrive in 3–10 business days depending on your location.
  • Delivery Appointment: For freight shipments, the carrier will contact you to schedule a delivery window. Someone must be present to inspect and sign.

Freight Delivery Details: Freight deliveries are curbside unless otherwise arranged. The driver will bring the pallet to the end of your driveway or loading area.

Inspect Before Signing: Please inspect your shipment carefully before signing the delivery receipt. If there is visible damage, write “DAMAGED – SUBJECT TO INSPECTION” on the paperwork, take photos, and contact us within 48 hours so we can assist with a claim if needed.

Questions About Delivery? Call us at 888-995-4450.

Assembly Overview:

Most Body-Solid equipment requires assembly. Step-by-step instructions are included with every product, and many customers successfully assemble their equipment themselves.

What To Expect:

  • Assembly time varies depending on product size and complexity.
  • Larger multi-station gyms and racks typically require 2 people.
  • Basic hand tools (socket set, wrenches, Allen keys) are commonly needed.

Helpful Tip: Assemble the unit in the room where it will be used, as fully assembled machines can be difficult to move.

Need Professional Installation? We can refer you to a trusted installation partner in many areas.

Call 888-995-4450 for assistance.

Authorized Body-Solid Dealer:

Select Fitness USA is an authorized dealer for Body-Solid, Best Fitness, and Powerline products. Every purchase includes the original manufacturer’s warranty.

Warranty Coverage Varies By Product Line:

  • Body-Solid Branded Equipment: Many strength products include strong in-home warranty coverage, with extended or lifetime coverage on key structural components.
  • Best Fitness & Powerline: These product lines typically carry more limited residential warranties.
  • Tools & Accessories: Warranty terms vary by product category.

Usage Matters: Residential, light commercial, and full commercial warranty coverage differs based on where and how the product is used.

For exact warranty terms on this product, please review the Product Details section or contact us if you need clarification.

Customer Reviews

Based on 1 review
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J
Joseph McIntosh
Very Satisfied!

I recently purchased this exercise equipment. I'm very satisfied when the results I'm getting. The machine has a very clean look and very comfortable. I highly recomend this equipment to every one for ab and lower back exercises.
Joseph M.

As a thank-you, some customers receive an incentive for sharing photos or videos of their order. All opinions are their own.

Do you offer installation services?

Yes! We partner with a reliable installer network to provide assembly and installation options. Request a quote to get your equipment professionally set up.

Do you offer financing?

Yes! We offer Affirm, PayTomorrow, ShopPay, and Klarna so you can split your purchase into manageable payments.

If you need business financing options contact us for a list of places to quote your loan or lease agreement.

Can I use my HSA/FSA to purchase fitness equipment?

Yes! We accept HSA and FSA payments through TruMed, a payment option at checkout, making it easier than ever to pay for fitness and wellness products with your tax advantaged dollars.

Do you offer extended warranties?

An extended warranty protects your investment from costly repairs and labor on heavy-use equipment, giving you years of worry-free performance and saving you money long after the manufacturer’s coverage ends.

Is there sales tax on my order? Why not...

As of 3/5/25 sales tax is charged only in Illinois, Georgia, Florida, Nevada, Michigan, and North Carolina.

If you are an exempt purchaser, please call 888-995-4450 and get a quote without tax.

What if my order is damaged during shipment?

If your order is damaged during shipping, document the damage with photos and videos and contact us. We'll work out the best solution, be it replacement parts, paint, a partial refund, or a replacement. 

Can I cancel my order?

Yes, you can cancel your order and get a full refund until your product has shipped.

Once shipped, you may be liable for the costs of shipping involved to turn it around.

Returns are considered on a case by case basis depending on the products, condition they will be returned in, and will be subject to all return shipping costs.

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  • Multi-Channel Priority Support
  • A-Team White Glove Installations
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“From kind and professional service, to great communication detailing the status of our orders, to the quality of the equipment - I couldn’t have asked for anything better.”

- Zachary P., 06/24
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