Overview

The Smith Machine Rack Attachment turns your existing rack — Hydra, Manticore, 84" Light Commercial, or most 2.3"–3" racks — into a smooth, guided Smith machine without stealing a single extra inch of floor space. Sneaky, right?

Pick the classic built-in Smith bar, or go BYOB (Bring Your Own Barbell) and run your favorite bar inside the guided rails. You get the safety and consistency of a Smith, plus the familiar feel of the bar you already know and love. More control, more confidence, fewer "please don't let this rep be the one that takes me out" moments.

Recommended Set-Up: Mount the upper brackets to the top of your uprights & the lower brackets to your crossmembers (inside rack) or front foot stabilizers (outside rack). Brackets can be mounted to your uprights only, but a dropped bar could permanently damage the unit.

Who It's For

Beginners — Guided bar path builds confidence and reduces risk while learning core movements like squats, bench, and presses.
Intermediate Lifters — Train heavy without a spotter, maintain consistent form, and use higher volume safely.
Advanced Athletes — Use it for hypertrophy work, accessory lifting, pre-exhaust sets, and high-rep training where stability matters.
Small-Space Home Gym Owners — Get full Smith machine functionality without dedicating 4–6 feet of floor space to a standalone machine.
Couples / Households with Mixed Experience Levels — The fixed bar path makes lifting safer and more accessible for partners new to strength training.
Rack Owners Who Don't Want to Replace Their Setup — Add a Smith machine to your existing rack — no need to buy a new cage or proprietary setup.

Exercises — Lower Body

Squats
Split squats / Bulgarian split squats
Lunges
Hack squat variations
Calf raises

Exercises — Upper Body

Flat bench press
Incline bench press
Decline press
Shoulder press
Upright rows

Exercises — Back & Accessory Work

Smith machine rows
Hip hinges / RDL variations
Shrugs

Exercises — Core

Smith machine ab roll variations
Kneeling Smith machine core drags

Compatibility — Bells of Steel Racks

The Bar Included version also fits 47" wide racks by placing the spacers on the inner side of each mounting bracket — watch this video for more compatibility details.

Hydra & Manticore – 4-Post Racks

Heights: 72" (outside uprights only), 84", 90", 108"
Widths: 47" or 49"

Hydra & Manticore – 6-Post Racks

Heights: 72" (outside uprights only), 84", 90", 108"
Widths: 47" or 49"

Hydra Flat-Foot / 4-Post

Heights: 72" (outside uprights only), 84", 90" (see note), 108"
Width: 49"
Mounts at a slight angle by default
For straight-up-and-down travel, an extra-long bolt kit and additional bushings are required
The 56" Hydra Flat Foot requires the Conversion Kit for vertical travel
The 90" Hydra Flat Foot requires side crossmembers to be lowered to accommodate Smith Machine.

Hydra & Manticore Squat Stand

Heights: 72", 84", 90" (Manticore Only), 108"
Width: 49"
Mounts at a slight angle by default
For straight-up-and-down travel, an extra-long bolt kit and additional bushings are required

Hydra / Manticore Folding 4-Post Racks

Heights: 72", 84", 90", 108"
Widths: 47" (Manticore only) or 49"
When installed, the rack cannot fold unless the bar is removed

84" Light Commercial Rack

Compatible when mounted on the inside at an angle
Requires all upper crossmembers to be lowered by one hole
This configuration is not compatible with the Lat Pulldown Attachment

Compatibility — Non-BoS Racks

The Smith Machine Rack Attachment fits most non-BoS power racks with:

Tubing between 2.3" × 2.3" and 3" × 3"
Rack height 72" or taller
Rack width 47" or 49"
Side hole size 5/8" or 1"

Installation Note: For the smoothest travel, ensure uprights are level, square, and evenly tightened — especially on non-BoS racks.

Installation Expectations

Ships in multiple boxes
Typical install time: 60–120 minutes
Two people recommended for positioning the guide rods
Alignment is straightforward on Hydra/Manticore; may require minor adjustments on non-BoS racks
Light lubrication optimizes bearing and rotation smoothness

Smith Machines

Smith Machine Rack Attachment

Smith Machine Rack - 6-Post with Kraken - Manticore (3" x 3", 1" Holes)

Smith Machine - Hydra (3" x 3", ⅝" Holes)

Smith Machine Rack With Lat Pulldown - Hydra (3" x 3", ⅝" Holes)