Heavy, Round, and Built to Last
Cast iron does not need a sales pitch. PRx Cast Iron Olympic Plates are dense, compact and honest — the plates you load for squats, presses and pulls where the bar never leaves your hands. A 2" (50.6mm) collar opening means they fit every standard Olympic barbell you own.
Because iron is far denser than rubber, these plates take up a fraction of the sleeve space of a bumper of the same weight. Choose from six sizes, 2.5 lb through 45 lb, sold in pairs.
Key Features
Dense iron construction with no filler, no coating to chip and nothing to wear out.
A 45 lb iron plate is only 1.4" wide, so a loaded bar holds far more weight than with bumpers.
A 50.6mm +/-0.2mm collar opening slides onto any 2" Olympic sleeve.
2.5 lb and 5 lb sizes let you add weight in small, sustainable increments.
A clean, understated look that suits a rack-and-platform setup.
2.5, 5, 10, 25, 35 and 45 lb pairs cover a complete progression.
Description
Every well-built home gym eventually needs iron alongside its bumpers. Bumper plates are the right call for anything you drop, but for benching, strict pressing, rowing and back squats they waste sleeve space and add nothing. Cast iron solves that: the same 45 lb in 1.4" instead of 3".
The size range here matters as much as the material. Small increments are how strength actually gets built, and a pair of 2.5 lb plates at 6.5" across is the difference between adding five pounds to a lift and stalling for a month. Working up from there, the 10 lb at 9" and the 25 lb at 11" fill the gaps that a bumper-only set leaves wide open.
All six sizes share the same 50.6mm collar opening, so they mix freely with your bumpers on the same bar and load onto standard plate pegs. Choose your weight above; each option ships as a pair.
Specifications
| Specification | Detail |
|---|---|
| Material | Iron |
| Color | Dark gray |
| Collar Opening | 50.6mm +/-0.2mm (2") |
| Barbell Compatibility | All standard Olympic barbells |
| Available Weights | 2.5 lb, 5 lb, 10 lb, 25 lb, 35 lb, 45 lb |
| Sold As | Pairs |
Size Chart
| Weight | Diameter x Width |
|---|---|
| 2.5 lb | 6.5" x 0.4" |
| 5 lb | 7.8" x 0.5" |
| 10 lb | 9" x 0.9" |
| 25 lb | 11" x 1.4" |
| 35 lb | 14.1" x 1.4" |
| 45 lb | 17.7" x 1.4" |
Ready to Build Your Dream Gym?
Our fitness experts are here to help you design the perfect setup for your space and goals. Schedule your free consultation today and let us bring your vision to life.
PRx Cast Iron Olympic Plates
Vendor: PRx Performance
Need help with choosing the right product?
Click here to reach out to one of our experts.
Building Dream Gyms Takes Precision 🏋️♂️
At Fitness Supply, we’re focused on building dream gyms—not just stocking shelves. To offer the best selection and pricing, many of our products are ordered directly from our manufacturing partners and may not be stocked in our warehouse. Lead times may vary based on availability.
Heavy, Round, and Built to Last
Cast iron does not need a sales pitch. PRx Cast Iron Olympic Plates are dense, compact and honest — the plates you load for squats, presses and pulls where the bar never leaves your hands. A 2" (50.6mm) collar opening means they fit every standard Olympic barbell you own.
Because iron is far denser than rubber, these plates take up a fraction of the sleeve space of a bumper of the same weight. Choose from six sizes, 2.5 lb through 45 lb, sold in pairs.
Key Features
Dense iron construction with no filler, no coating to chip and nothing to wear out.
A 45 lb iron plate is only 1.4" wide, so a loaded bar holds far more weight than with bumpers.
A 50.6mm +/-0.2mm collar opening slides onto any 2" Olympic sleeve.
2.5 lb and 5 lb sizes let you add weight in small, sustainable increments.
A clean, understated look that suits a rack-and-platform setup.
2.5, 5, 10, 25, 35 and 45 lb pairs cover a complete progression.
Description
Every well-built home gym eventually needs iron alongside its bumpers. Bumper plates are the right call for anything you drop, but for benching, strict pressing, rowing and back squats they waste sleeve space and add nothing. Cast iron solves that: the same 45 lb in 1.4" instead of 3".
The size range here matters as much as the material. Small increments are how strength actually gets built, and a pair of 2.5 lb plates at 6.5" across is the difference between adding five pounds to a lift and stalling for a month. Working up from there, the 10 lb at 9" and the 25 lb at 11" fill the gaps that a bumper-only set leaves wide open.
All six sizes share the same 50.6mm collar opening, so they mix freely with your bumpers on the same bar and load onto standard plate pegs. Choose your weight above; each option ships as a pair.
Specifications
| Specification | Detail |
|---|---|
| Material | Iron |
| Color | Dark gray |
| Collar Opening | 50.6mm +/-0.2mm (2") |
| Barbell Compatibility | All standard Olympic barbells |
| Available Weights | 2.5 lb, 5 lb, 10 lb, 25 lb, 35 lb, 45 lb |
| Sold As | Pairs |
Size Chart
| Weight | Diameter x Width |
|---|---|
| 2.5 lb | 6.5" x 0.4" |
| 5 lb | 7.8" x 0.5" |
| 10 lb | 9" x 0.9" |
| 25 lb | 11" x 1.4" |
| 35 lb | 14.1" x 1.4" |
| 45 lb | 17.7" x 1.4" |
Ready to Build Your Dream Gym?
Our fitness experts are here to help you design the perfect setup for your space and goals. Schedule your free consultation today and let us bring your vision to life.