CAP Barbell OBIS-48B-3 Super Curl Olympic Bar
- Weight Capacity Maximum: 499.99 pounds
- Shaft Length: 33.2 inches
- Sleeve Length: 7.5 inches
- Grip Size: 1 inch
Last refreshed Jul 5, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B0B2TSQBBHModel: OBIS-48B-3Category: Weightlifting Bars
Overview
Arm isolation work is the focus of this 48 inch Olympic curl bar, which uses an angled super curl profile and bronze-bushed revolving sleeves sized for 2 inch Olympic plates. It carries a 500 pound rating.
The bar is rated to 500 lb with 51,000 PSI tensile steel.
- 48 inch super curl angled bar
- 2 inch Olympic sleeves, 6.5 inch loadable length each side
- 500 lb weight capacity
- 13.7 inch diamond knurling per side
Who it's for
Fits a home gym lifter who wants a dedicated curl bar for biceps, triceps, and forearm work without paying gym-brand prices. Anyone expecting a silent, ready-to-lift bar out of the box should plan on a quick cleaning and lube pass first.
Pros and cons
- 500 lb capacity with solid steel construction
- Knurling rated sharper than expected for a budget bar
- Fits standard 2 inch Olympic plates and collars
- Sleeves can arrive squeaky and need cleaning or lubrication
- Spring-style plate collars can collide with the plate during use
Performance notes
Bronze bushings, rather than bearings, let the sleeves rotate independently from the shaft, which keeps cost down but means some units need cleaning and lubrication before they spin smoothly and quietly.
Specifications
| Brand | CAP Barbell |
|---|---|
| Model | OBIS-48B-3 |
| Dimensions & fit | |
| Weight Capacity Maximum | 499.99 poundshigher than 53% of 58 weightlifting bars |
| Shaft Length | 33.2 incheslower than 65% of 27 weightlifting bars |
| Sleeve Length | 7.5 incheslower than 77% of 40 weightlifting bars |
| Grip Size | 1 inchlower than 68% of 45 weightlifting bars |
| Item Dimensions L x W | 47 × 2.7 inches |
| Construction & materials | |
| Material | Alloy Steel |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Grip Type | Knurled |
| Part Number | OBIS-48B-3 |
Closest rivals on specs
RITFIT 2 Inch Olympic Barbell- Weight Capacity Maximum 499.99 vs 350 pounds (+43%)
Frequently asked questions
What is a super curl bar used for?
The angled profile sets your hands in a more natural grip for curls, extensions, and other arm isolation exercises.
Does the CAP Super Curl Bar fit standard weight plates?
Yes, it has 2 inch Olympic sleeves compatible with standard Olympic plates and collars.
Do the sleeves need maintenance?
Some buyers found the sleeves squeaky when new and recommend disassembling, cleaning, and lubricating the bushings.