BowFlex SelectTech 840 Kettlebell
SelectTech 840 Kettlebell weight adjustment dial - default view
BowFlex 840 adjustable kettlebell - default view
SelectTech 840 Kettlebell - default view
Lunge exercise with a SelectTech 840 Kettlebell - default view
BowFlex SelectTech 840 Kettlebell--thumbnail
SelectTech 840 Kettlebell weight adjustment dial--thumbnail
BowFlex 840 adjustable kettlebell--thumbnail
SelectTech 840 Kettlebell--thumbnail
Lunge exercise with a SelectTech 840 Kettlebell--thumbnail

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2-Month FREE Trial for New Members1

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Product Overview

  • Adjusts from 8 to 40 lbs
  • Replace 6 kettlebells
  • Weight selection dial
  • On demand workouts available with the JRNY app2

Product Features

Feel your spirits lifting.

Ready for your next reps.

Selection dials easily take you from one exercise to the next.

Your next goal—under control.

Easily adjusts from 8 to 40 lbs.3

Specs & Warranty

840 Kettlebell Dimensions - Length 59.3 inches, Width 11.7 inches, Height 12.7 inches



8.8" L x 7" W x 12.5" H

(22.4 x 17.8 x 31.8 cm)

6 Weight Settings3

8, 12, 20, 25, 35 and 40 lbs

(3.6, 5.4, 9, 11.3, 15.9 and 18.1 kg)



2 Years

JRNY adaptive fitness membership

Classes made for kettlebells.

Find trainer-led workouts developed specifically the SelectTech Kettlebell.

Mix in some whole-body movement.

Yoga, Pilates and strength training give you options when you want a change of pace.

Workout wherever.

Access the JRNY app anywhere from your compatible iOS or Android device.3

Add some rhythm to your reps.

Curated JRNY Radio stations let you workout to your favorite tunes.


2-Month FREE Trial for New Members 1

Subscription starting at $11.99/mo or $99/yr Learn more

Review Snapshot

by PowerReviews

1 This offer's availability is subject to change without notice. At end of free trial, JRNY membership automatically renews at current membership rates until canceled.

2 JRNY app for phone or tablet required to access Motion Tracking workouts.

3 Please be advised that due to tolerances in the manufacturing process, individual weight plates may vary slightly from their stated weight values.