Micro Gainz
Olympic Size Fractional Weight Plates Pair of 1.25LB Plates
Independent coverage is consistently positive on this Micro Gainz fractional plate line, though m...
$24.99
Buy NowThese are genuine York Barbell 100 lb plates from York’s “milled era” (roughly the 1960s through the 1980s), not the modern “Legacy” reproduction line York currently manufactures. Like all of York’s standard-line plates from that era, they’re double-sided and identical front-to-back, cast in iron with a 1” center hole sized for standard (non-Olympic) bars and sleeves – a real compatibility limit against most modern racks and barbells. During production, York would machine some plates on a mill to bring them into tighter weight tolerance, leaving a distinctive swirling pattern on the back; only a subset of 100 lb plates received this treatment (via special order), so tolerance isn’t guaranteed on every unit the way it is on a certified modern plate. What makes them sought after decades later is durability: original iron from this period is routinely described as still solid and usable today. They’re no longer in production, so the only way to acquire a pair is secondhand from a collector or private seller – there’s no current manufacturer or retail listing.
Buying guide
Best Weight Plates for Your Home Gym — July 2026 Bumper Plates or Iron Plates? How to Pick Your First Set — July 2026 Do You Need Calibrated or Competition Plates? — July 2026 How Much Do Weight Plates Cost Per Pound? — July 2026 What Weight Set Should a Beginner Buy? — July 2026 Will Dropping Weights Damage Your Floor? — July 2026| Era | milled-era production, roughly 1960s-1980s |
|---|---|
| Sides | double-sided, identical construction front and back |
| Material | cast iron |
| Hole size | 1" standard bore (not compatible with 2" Olympic sleeves) |
| Tolerance | not guaranteed on every unit -- only special-order milled-hub 100 lb plates were machined into tight weight tolerance |
| Availability | discontinued; secondhand/collector market only, no current manufacturer or retail listing |
Weight plates load your barbell — but “plate” covers two very different tools. Bumper plates are rubber discs around a steel hub, all the same ~450mm diameter, built to be dropped from overhead without damaging your floor or bar; they’re the default for Olympic lifting and CrossFit. Iron/steel plates are denser and thinner per pound, cheaper, and quieter to load, but most aren’t made to be dropped — better for slow, controlled powerlifting-style work.
Every barbell gym needs plates. Most home lifters should start with a bumper set, then add iron, change, or specialty plates as a second purchase once they know what their training is missing.
| Vintage York 100 lb Double Sided Vintage Plates | Black Sport Bumper Plates | Calibrated Chromed Plates | Hansu Power | Wright AMP Bumper Plates | |
|---|---|---|---|---|
| GymRadar rating | 4.56/5 | 4.56/5 | 4.56/5 | 4.56/5 |
| Price | $90.00 | $3,229.00 | $71.00 | |
| Era | milled-era production, roughly 1960s-1980s | |||
| Sides | double-sided, identical construction front and back | |||
| Material | cast iron | Rubber (sport) with stainless steel insert | Recycled rubber with stainless-steel center insert | |
| Hole size | 1" standard bore (not compatible with 2" Olympic sleeves) | |||
| Tolerance | not guaranteed on every unit -- only special-order milled-hub 100 lb plates were machined into tight weight tolerance | |||
| Availability | discontinued; secondhand/collector market only, no current manufacturer or retail listing |
| Expert | 4.56/5 | 3 reviews | |
| Youtube | 4.5/5 | 3 reviews |
Genuine 1960s-‘80s York Barbell 100 lb plates are milled-era iron that collectors and lifters prize for surviving decades of hard use — “they were made so well and they just hold up,” as Vintage Weights PGH’s founder puts it. Standout dimension: durability, borne out by 40-60-year-old examples still in daily-use condition. Weakest dimension: versatility — the 1” center hole only fits standard (non-Olympic) bars and sleeves, and since only some hubs were factory-milled to tolerance, any given pair’s accuracy isn’t guaranteed the way a certified modern plate’s is. They’re also secondhand-only: no manufacturer or retailer currently sells these new.
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