AB-4100 Adjustable Weight Bench
- Regular price
- $399.99
- Sale price
- 399.99
- Regular price
- $
- Unit price
- per
AB-4100 Adjustable Weight Bench
- Regular price
- $399.99
- Sale price
- 399.99
- Regular price
- $
- Unit price
- per








OVERVIEW
If you're looking to maximize your space without compromising your workout, this is the bench. The AB-4100 marries form and function with an expanded range of incline and seat positions, upgraded handle design, and black zinc hardware. The ladder-style adjustment system is quick and easy to adjust. At only 85lbs, this lightweight and maneuverable bench includes a built-in upright storage post with rubber coating to protect your floors and add extra stability. And for the first time, this bench is available in limited edition colors including white, green, and purple.
This versatile adjustable bench is ideal for a wide range of athletes and features 7 back positions (0 to 85 degrees) and 3 seat positions (0, 10, and 20 degrees). The closed ladder design prevents you from lifting the ladder out when adjusting your AB-4100. We’ve also minimized the gap between the seat and back pad (1.57”) and married it with a squared off 12” back pad, featuring our improved grippy pad material, so athletes of any size can lift comfortably and worry-free.
PRODUCT DIMENSIONS

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Bench Weight85lbs
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Bench Height17"
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Bench Width20.3"
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Bench Length51.3"
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Back Pad Angles0, 15, 30, 45, 60, 75, 85
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Seat Pad Angles0, 10, 20
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Back Pad Length36"
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Pad Width12"
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Seat Pad Length13"
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Pad Gap1.57"
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Footprint7.2 SQFT
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Tolerance3%
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Weight Capacity700lbs
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Material7- & 14-Gauge Steel
PRODUCT FEATURES
VIDEO GALLERY
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HOW WE BUILT THE AB-4100 ADJUSTABLE WEIGHT BENCH
The AB-4100 is the newest addition to our bench line up. Designed in Denver by an in-house team of engineers, the AB-4100 is the ultimate home bench. Find out why and how we built it. -
AB-4100 Unboxing and Build Tips
This video will help you make the most of your 4100 once it arrives. See how we unbox and learn some build tips. -
REP AB-4100 ADJUSTABLE BENCH REVIEW: SNEAKY VALUE!
Lightweight, highly adjustable, and durable are just some of the words to describe the REP Fitness AB-4100 Adjustable Weight Bench. Seriously, this thing is capable of doing almost anything.
FAQS
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Is this compatible with a wide pad/seat?
It is compatible with the AB-3000 wide pad (no wide seat is needed) but the AB-3000 wide pad is 1.37" taller than the 4100 pad so when stored vertically, it will be angled and resting on the pad.
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How stable is the wide pad?The wider backplate combined with a 4-bolt connection allows the wide pad to be really stable on there versus the 5200 which has bolts down the center.
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What's the benefit of a closed ladder design?
A closed ladder design prevents you from lifting out the ladder when adjusting your bench and specifically when taking the bench vertical. The back pad does not swing around.
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Do you have any assembly tips?
Yes we do! Check out this video we made just for you.