three main benefits of the shox-box

how shox-box transforms rowers

Repetitive Rowing Machine Use

Numerous studies have shown a correlation between repetitive ergometer/rowing machine use and lower back pain/discomfort, leading in some cases to injury. One objective of the Shox‐Box is to reduce the incidence of overuse injuries and to help people with pain resume their workouts.

Save your Back

  • ​Fits Concept2 ergs: Models B, C, D, and E (not the Dynamic)
  • High quality textured powder‐coated enclosure, all steel construction
  • Robust, multi‐point, dampened spring design
  • Maximum weight limit is 300 pounds
  • No tools required. Less than 1 minute to install: set legs in cradle & row
  • Maintenance Free
  • Works with C2 slides using Shox‐Box Bracket Kit (sold separately)
  • Patented Design
  • Front Box Dimensions: 27" x 11 1/6" x 4 5/8"
  • Rear Box Dimensions*: 16 1/4" x 9 3/9" x 4 5/8"

* Model E Rear Box dimensions are the same as the Front Shox‐Box.

1. Perfects: Rowing technique training


The on‐water feel enhances the rowing experience by causing the rower to focus on balance and core strength. With this boat‐like feel and focus on technique in the off‐season, the Shox‐Box system prepares the rower for a smoother transition from a rowing machine back to a boat.

2. Comforts: Relieves discs and joints

Diverts harmful forces, at both the catch and the finish, away from your body like a boat does when you row, enabling you to train with less strain. The Rear box minimizes
spinal compression at the finish to reduce discomfort in the back, buttocks, hips and more.  The Front box reduces shear, compressive, and tensile forces at the catch to reduce the impact on the knees, ankles, neck and shoulders.



We are entertaining

offers for the Shox-Box patent, which includes integrating the Shox-Box technology into a

rowing machine.

Please contact us at 


for more information.

3. Strengthens: Enhanced Strength Training

The Shox‐Box enhances your strength training by allowing you to vary your erg
workouts. Use just the rear box to focus on your legs, use the front box only to focus on
hips/hip flexors, or use both boxes to get a better workout on your core and obliques.

Rowing Machine versus a Boat

As a rower finishes a stroke and begins the next, the upper torso quickly pivots about the lower back. This quick pivot results in a rapid reversal of acceleration of the upper body mass causing a significant compressive shock to the lower back.
In a rowing shell when the rower reaches the finish part of the stroke, the boat bounces downward in the water absorbing this shock. On an indoor rowing machine, the downward shock, measured at 8 to 25 pounds per stroke, is absorbed in the rower's back since the erg frame sits rigidly on the floor. Even rowing machines with horizontal slides cannot absorb this axial compression.

The Shox‐Box allows the rowing machine to move vertically diverting that shock from the spine into the Shox‐Box, enabling the rower to train with less trauma. With even as little as a 10 pound downward shock on every stroke, for approximately 220 strokes, throughout a 2000 meter piece the rower will divert over 2000 pounds (1 Ton) of accumulated trauma to their back with the Shox‐Box.