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Home > BowFlex SelectTech 840 Adjustable Kettlebell

BowFlex SelectTech 840 Adjustable Kettlebell

BowFlex SelectTech 840 Adjustable Kettlebell BowFlex SelectTech 840 Adjustable Kettlebell BowFlex SelectTech 840 Adjustable Kettlebell
$149.00
BOWFLEX (PRIVATE INVOICE NO ONLINE CHECKOUT)
ST840
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BowFlex Adjustable Kettlebell


The biggest barrier to strength isn’t effort—it’s friction: cluttered floors, slow weight changes, and the mental drag of “finding the right bell.” The BowFlex Adjustable Kettlebell (SelectTech 840) solves one clear problem: it makes real progression easy to repeat. You get a compact kettlebell that shifts from light technique work to heavier strength work in seconds, so your session flows instead of stalling.


If you’re training for performance, longevity, or simple everyday capacity, kettlebells are brutally effective—but only when you actually use them. This is the “grab it, set it, move” solution that keeps the work honest and the space clean.


Why this adjustable kettlebell wins time back

An adjustable kettlebell isn’t “cool” because it adjusts—it’s valuable because it protects training density. When you can change loads fast, you can keep rest periods intentional, run cleaner circuits, and progress week to week without buying a rack.


You’ll feel the benefit immediately in sessions like

  • warm-up → technique reps → heavy sets (no equipment shuffle)
  • strength work → conditioning finisher (no floor chaos)
  • trainer-led circuits (no traffic jams around a kettlebell rack)

This is also why it performs well in studios and corporate wellness rooms: less clutter means safer movement lanes and less reset time between users.


Product specs and dimensions

This is the non-negotiable part for serious buyers: repeatable settings, stable pickup, and a footprint that fits real spaces.


BowFlex Adjustable Kettlebell dimensions

  • Length: 8.8 in
  • Width: 7.0 in
  • Height: 12.5 in


BowFlex kettlebell weight settings

The SelectTech 840 provides 6 dial-selected settings:

  • 8 lb
  • 12 lb
  • 20 lb
  • 25 lb
  • 35 lb
  • 40 lb


Assembly weight and build notes

  • Fully loaded assembly weight: 40.5 lb
  • Warranty: 2 years (parts)

Practical reality: all selectable systems can have minor manufacturing tolerances across internal plates. What matters is consistency—this design gives you repeatable load steps you can program around with confidence.


How to train with the BowFlex Adjustable Kettlebell

The smartest way to use six settings is to treat them like a progression ladder. You’re not guessing loads—you’re moving through a clear sequence, building skill and capacity without stalling.


Adjustable kettlebell strength ladder example

Direct answer: pick one movement pattern and “earn the next click.”

Use this approach when you want strength gains without sloppy reps:

  • Goblet squat: 12 lb (8 reps) → 20 lb (6 reps) → 25 lb (5 reps) → 35 lb (3 reps)
  • Deadlift/hinge: 20 lb (8 reps) → 25 lb (6 reps) → 35 lb (4 reps) → 40 lb (2–3 reps)

A rule that keeps this expert clean: only move up if your last rep looks like your first rep—same depth, same brace, same control.


Adjustable kettlebell conditioning flow example

Direct answer: use fast dial changes to keep heart rate high without wrecking form.

Try 15 minutes, rotating through:

  • Two-hand swing: start 20 lb, build to 25–35 lb
  • Front rack reverse lunge: 12–20 lb
  • Suitcase carry march (core): 25–40 lb

If you want a “quiet confidence” finisher that doesn’t require maximal skill, swap swings for deadlift-to-high-pull at a moderate setting and keep the tempo strict.


JRNY compatibility and coaching

Direct answer: you don’t need an app to get results, but guided sessions reduce decision fatigue.

If you thrive with structure, JRNY-style training can make your kettlebell work more consistent: timed intervals, progressive sessions, and fewer “what should I do today?” moments. If you already run your own programming, the kettlebell still delivers exactly what you want—speed, progression, and less clutter.


Safety and setup: the lock-check ritual

Direct answer: lock the setting every time—especially before swings.

Before each set:

  • Turn the dial to your number until it seats cleanly
  • Lift the bell straight up from the base
  • Give it a quick “control check” (no rattling, no partial engagement)

For ballistic work like swings, your hinge mechanics matter more than ego weight. Start lighter, own the rhythm, and only progress when the bell stays stable and your spine stays neutral.


Key features of the BowFlex Adjustable Kettlebell

✅ 8–40 lb dial-select range
✅ Six fixed load settings
✅ Replaces six kettlebells
✅ Fast transitions for circuits
✅ Compact 8.8" x 7" footprint
✅ 12.5" height stores easily
✅ 40.5 lb fully loaded build
✅ Repeatable progression ladder
✅ Cleaner floors, safer training
✅ Great for carries and swings
✅ 2-year parts warranty


How does an adjustable kettlebell work?
It uses a selector system: choose a number, the bell engages that load, and you lift one integrated kettlebell. The win is speed—less swapping, more training.

Is an adjustable kettlebell safe to swing?
Yes, if the setting is fully locked and your hinge is controlled. Start light, keep reps identical, and progress only when form stays crisp.

Can one adjustable kettlebell replace a set?
For most home training and many professional use cases, yes. The six steps cover common strength and conditioning loads without needing a full rack.

Do I need JRNY for the kettlebell?
No. JRNY adds guided structure; the kettlebell works perfectly with any solid program.


Buy from Tennessee, ship nationwide

Hamilton Home Fitness is headquartered in Tennessee and ships across all U.S. states, making it easy to standardize strength training at home, in a studio, or in a wellness room. Get the BowFlex Adjustable Kettlebell now from “Hamilton Home Fitness” and turn “I’ll train later” into a routine that actually sticks.

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