Cast Iron Olympic Plates
Sold in Pairs
2.5 to 45 lb
230 lb Bundle
Full set in one order
Cast Iron
Dense and compact
2 Inch Opening
Fits Olympic barbells
Heavy, round, and honest. Cast iron Olympic plates are the classic way to load a bar: denser and slimmer than rubber, so more weight fits on the sleeve, at a lower cost per pound. Pairs run from 2.5 to 45 lb, with a 230 lb bundle that outfits a bench and squat setup in one order.
Weight Pairs:2.5lb
Genuine PRx Performance
Synergy Custom Fitness is a PRx Performance retail partner. Every PRx free weight on our site is the same gear PRx sells directly, fulfilled and shipped to your door by PRx itself.
Dense Means Slim
Iron carries more weight in less sleeve space than rubber. A 45 lb iron plate is 1.4 inches wide, leaving room to keep loading, plate after plate.
Pairs 2.5 to 45
Six weight options sold in pairs cover everything from warm up jumps to working sets, and the diameters step down so plates read at a glance.
The 230 lb Bundle
One order that loads a serious bench or squat session: a full graduated set of pairs without picking weights one listing at a time, delivered together and ready to lift.
For Racked Lifts
Iron shines where the bar gets set down under control: squats, bench, presses, rows. For repeated dropped lifts, bumper plates are the better tool. Use the right plate for the job.
Stores With Everything Else
Synergy plate storage racks and wall mounted holders hold iron plates by size, off the floor, next to the rack that uses them, every single day.
Genuine PRx, Shipped Direct
Synergy is a PRx Performance retail partner. Your order is fulfilled and shipped to your door by PRx itself, the exact same gear PRx sells on its own site.
| Material | Cast iron |
| Color | Dark gray |
| Collar Opening | 50.6mm, fits 2 inch Olympic bars |
| 2.5 lb | 6.5 x 0.4 inches |
| 5 lb | 7.8 x 0.5 inches |
| 10 lb | 9 x 0.9 inches |
| 25 lb | 11 x 1.4 inches |
| 35 lb | 14.1 x 1.4 inches |
| 45 lb | 17.7 x 1.4 inches |
| Sold | In pairs |
Good to Know
| Options | 2.5 through 45 lb pairs, 230 lb bundle |
| Ships From | PRx Performance, direct |
| Storage Match | Synergy plate storage racks |
- Free weights arrive ready to use. No assembly required.
- Looking for rack assembly instructions? Visit our File Library ›
Frequently Asked Questions
Iron is denser, slimmer, and cheaper per pound, ideal for bench, squats, and rows where the bar is racked under control. Bumpers are for lifts that end with the bar on the floor.
Yes for racked lifts. If the bar will be dropped, the bumpers must be the largest plates on the sleeve so the rubber, not the iron, meets the floor.
Yes. Any plate with a standard 2 inch Olympic collar opening stores cleanly on Synergy plate storage racks and wall mounted plate holders, and loads on any Olympic barbell.
Yes. Synergy Custom Fitness is a PRx Performance retail partner. Every PRx item on our site is the same product PRx sells directly, fulfilled and shipped by PRx itself.
PRx free weights ship separately and arrive directly from PRx Performance. They are not part of Synergy's free shipping promotion, which applies to orders over $699 of Synergy racks and accessories. If your order mixes racks and free weights, expect separate deliveries.
Our standard 30 day return policy applies. Email support@synergycustomfitness.com with your order number to get a Return Merchandise Authorization within 30 days of delivery, and keep items in their original new condition and packaging.