Battle of the Adjustable Benches: The AB-4100 vs Nighthawk™

Shopping for new home gym equipment, like an adjustable bench, can send you down a research k-hole — suddenly you're 20 tabs deep and questioning what day it is.

But some choices are easier than others. For bodybuilders, seasoned gym-goers, and beginners alike, an adjustable weight bench is a no-brainer home gym staple. REP's AB-4100 and Nighthawk™ are two top contenders, but which one is right for you? We'll break down the specs, features, and key differences so you can decide which bench deserves a spot in your gym.

AB-4100 and Nighthawk ™ Specs

While the Nighthawk™ is essentially an upgraded version of the AB-4100, the two benches share a lot of similarities: closed ladder-style adjustments rather than pin-style, upright storage capabilitites, rear transport wheels, and seat heights that are both within standard for the International Powerlifting Federation.

"The Nighthawk is a true refinement and upgrade of the AB-4100," says Adam Brandt, Product Marketing Manager here at REP. "It introduces meaninful functional improvements, all while aiming to keep the price increase minimal." Still, a few small differences could sway your decision.

Quick Comparison: AB-4100 vs. Nighthawk ™

At first glance, these two adjustable benches seem nearly identical — both are compact, available in a wide variety of colors, and feature a sturdy tri-pod design that allows you to get your feet under the bench during your chest press. But here's where they differ:

• AB-4100 is less expensive. However, upgrading to the Nighthawk ™ is only an additional $50.
• Nighthawk™ adds decline capabilitites. The decline seat adjustment provides a -15 degree seat angle so you can tackle decline bench press and more.
• AB-4100 has a more compact footprint. It takes up only 7.2 SQFT while the Nighthawk ™ — a relatively compact weight bench — takes up 9.2 SQFT.
• Nighthawk™ increases stability. The Nighthawk™ seat is 25.9" compared to the AB-4100's 20.3" seat width. 
• Nighthawk ™ is attachment-ready. Unlike the AB-4100, the Nighthawk™ is ready to transform, and is compatible with soon-to-be released attachments such as an all-new Leg Curl/Leg Extension Bench Attachment and an updated Bench Leg Roller.

AB-4100 Pros and Cons

This lightweight and easy to maneuver weight bench is one of REP's best sellers, and if you're looking for a budget-friendly option that doesn't compromise on stability, the AB-4100 hits the mark. Here's a closer look at where it shines — and where it falls short.

PROS:

• Lower price without sacrificing build quality
• Compact footprint
• Vertical storage
  
• Closed ladder adjustments
• Seat height meets IPF standards and allows for leg drive
• Simple assembly
• Thin pad gap

CONS:

• No decline option
• No leg roller option
• Not compatible with upcoming REP attachments

Nighthawk ™ Pros and Cons

If you're looking to take your home gym to the next level, incorporate decline training, and tackle exercises that target your hamstrings and quads (with additional attachments), you'll want to check out what the Nighthawk™ can/can't provide for your fitness routine.

PROS:

• Decline seat posiition
• Built to utilize upcoming REP attachment accesories
• Wider base for added stability during workouts
• Vertical storage
• Closed ladder adjustments
• Thin pad gap
• Seat height meets IPF standards and allows for leg drive

CONS:

• $50 more than the AB-4100
• Larger footprint
  

REP AB-4100 vs Nighthawk ™: Which Adjustable Bench is Right for You?

"Both the AB-4100 and Nighthawk™ are for the customer who prioritizes maneuvarability and simplicity," says Brandt. However, you still may be torn between which one is right for you.

If you're tight on space and working with an even tighter budget, the AB-4100 may be the right choice to support your strength training. However, if you're wanting an adjustable bench with a wider range of capabilitites — decline seat adjustments and attachment capabilities — we'd recommend opting for the "extra versatility" provided by the Nighthawk™.

And if you're still struggling to pick the right adjustable bench for your training (no shame, I've been trapped at the grocery store for hours deciding between cottage cheese brands), check out our adjustable bench comparison guide.

Rosie Borchert is NASM-CPT, former Nike Volleyball coach, and fitness writer whose work has appeared on BarBend and Tonal. If anyone would like to hire her to play beach volleyball, snowboard, binge watch TV, or go climbing, please get in touch.

This article was reviewed by Ashley Boyer, ACE-CPT, for accuracy.