Body-Solid GPR400 Pro Power Rack Specs: Height, Footprint and Hole Spacing

The Body-Solid GPR400 Pro Power Rack is a power rack in the $1,000 to $1,300 price band. It is the rack that fixes the GPR378's main flaw, moving to 1 inch spacing where the safeties live while keeping 2 inch spacing where J-cups sit.

What are the Body-Solid GPR400 Pro Power Rack specifications?

Every figure below is the manufacturer's or retailer's published specification. Where a figure could not be verified against a published source it is omitted from the table rather than estimated, because a guessed dimension is worse than a missing one on a page you are using to decide whether something fits.

Not listed because we could not verify it from a published source: hardware size. Get those from the current spec sheet, and tell us through the contact page if the manufacturer publishes a figure we have missed.

What ceiling height does the Body-Solid GPR400 Pro Power Rack need?

Clear ceiling height is the distance from the finished floor to the lowest obstruction over the rack footprint, which in a basement is a duct run, a beam, a sprinkler head or a light fixture far more often than it is the ceiling itself. The rule is the rack height plus about 2 inches.

For this rack that is 81.1 inches, derived from the published 79.1 in height. That figure is our arithmetic on the manufacturer's number, not a manufacturer's number itself.

This is one of the racks that clears a 7 foot basement, which is the single most common constraint people write to us about. Clearing the rack is not the same as clearing a pull-up, though: you need your own standing height plus roughly 14 inches to get your chin over a bar, and in a 7 foot room that arithmetic fails for most adults. Run your own measurement through the ceiling height calculator before ordering, and see the rack height and clearance chart for how the bands compare.

There is a second clearance almost nobody plans for: you have to stand the frame up during assembly. Tilting a 79.1 inch structure into place in a 81.1 inch room does not work, and a heavy gauge frame is far harder to raise than a light one. If your headroom is within about 2 inches of the rack height, build it lying down and raise it with a second person.

How much floor space does the Body-Solid GPR400 Pro Power Rack need?

The barbell sets the floor space, not the rack. A 7 foot Olympic bar is 86.6 inches long, so any barbell lift needs at least 108 inches, which is 9 feet, of clear width no matter how compact the frame is. That is true of every rack on this site and it is the reason a very narrow rack rarely solves a narrow room.

The published footprint here is 52 by 52.6 inches, about 19 square feet of floor. Add roughly 24 inches of walk-around on the two sides you load plates from and the practical zone is closer to 8.3 by 6.4 feet, which is derived rather than published. The gym space planner will fit it against your actual room dimensions.

What attachments fit the Body-Solid GPR400 Pro Power Rack?

Three numbers decide attachment compatibility: the upright tube size, the hole diameter and the hole spacing. An attachment made for 2 by 3 inch uprights on 5/8 inch hardware will not fit 3 by 3 inch uprights on 1 inch hardware, and spotter arms that almost fit are spotter arms that do not fit.

This rack uses 3 x 3 in 11 ga uprights, with 1 in for safeties, 2 in at the top and bottom of the uprights for j-cups hole spacing. Body-Solid does not publish an upright tube size for this rack. The 3 by 3 in figure here comes from an authorised dealer rather than the manufacturer, so verify before buying any attachment. Compatibility across brands is a convention rather than a guarantee. Manufacturers revise dimensions between production runs without renaming a model, so the only safe check is to measure your own uprights: outside tube dimensions, hole diameter, and hole centre to centre spacing. The hole spacing and gauge chart covers what each measurement means.

At 11 ga the upright wall is about 0.12 inches thick. Gauge is a wall thickness designation rather than a strength rating, and a lower gauge number means thicker steel: 11 gauge is roughly 0.120 in, 12 gauge roughly 0.105 in, and 14 gauge roughly 0.075 in. Thicker wall resists the flex you feel when a heavy bar is racked off centre, which is a different thing from the rack's published capacity.

The one accessory worth buying with any rack used alone is a set of spotter arms , and the compatibility check above is exactly why: confirm the tube size and whether the holes are 5/8 inch or 1 inch before ordering. Where anchoring is called for, half inch wedge anchors are the common slab specification.

What should you know before buying the Body-Solid GPR400 Pro Power Rack?

• Body-Solid publishes no upright tube size anywhere for this model. The 3 by 3 in figure is dealer sourced and flagged as such.
• Dimensions here are the precise data sheet values rather than the product page's rounded 53 by 52 by 79 in.
• At 79.1 in tall it needs about 81 in of clear ceiling, which is one of the more basement friendly figures among full commercial cages.

How does the Body-Solid GPR400 Pro Power Rack compare with similar racks?

Compared here against other power racks in our data, on the four figures that actually decide a purchase: how tall it is, what the uprights are, how the holes are spaced, and what the manufacturer rates it to. A blank cell means we could not verify that figure, not that the rack lacks the feature.

Who is the Body-Solid GPR400 Pro Power Rack for?

A ground floor or slab gym where bench setup precision matters.

One inch safety spacing is worth paying for, and it is the single clearest reason to choose this over the GPR378. It means the safety pin lands where you want it on a bench press rather than an inch either side of it. The costs are a bigger 52 by 52.6 in footprint and 273 lb of steel, both of which make this a permanent installation in a room that can spare the floor.

Where to go next

• All rack and rig specs, with a master comparison table
• Best power racks, split into beginner, intermediate and expert picks
• How to choose a power rack, the decision in order
• Complete builds by budget, if the rack is one line of a bigger list
• Hole spacing and gauge chart, for attachment compatibility
• Best power racks, in three tiers