CAP Barbell 34'' Olympic Triceps Bar
- Bar
- 200 pounds
- Knurled
- Chrome
Reviewers rate this triceps bar a strong budget pick for clean welds and grip, with sleeve smoothness and included collars the main variables between units.
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How it ranks among the 101 bars we track
4.5★ across 159 Amazon ratings, Bayesian-smoothed toward the category average.
159 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
200+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 101 bars we track - how the scorecard works · full bars data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jul 5, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
CAP's OBIS-34S is a 34.25 inch chrome finished triceps bar made from cold rolled steel, with revolving sleeves and medium depth knurled grips. It is rated for 200 pounds and includes collars to secure plates.
- 34.25 by 6.69 by 2.76 inch chrome bar
- Cold rolled steel with revolving sleeves
- Medium depth knurled grip
- 200 pound weight capacity, includes collars
What buyers say
From Amazon customer reviews.
Reviewers consistently call this a strong value, pointing to clean welds, no rust and comfortable knurling for the price paid. Several compare it directly to CAP's pricier bearing sleeve bar and say this bushing version does not rotate quite as smoothly, which is the main tradeoff buyers accept. One reviewer got a unit that squeaked and lacked bearings entirely, and more than one noted the included collars can arrive without their mounting screws.
Strengths and trade-offs
Drawn from this product's published specifications.
- Solid welds and clean chrome finish on most units
- Knurling grip praised as comfortable and secure
- Fits standard Olympic plates without issue
- Priced well below comparable rotating sleeve bars
- Sleeve rotation less smooth than bearing based versions
- Included collars sometimes missing the mounting screw
- One reviewer received a unit with no bearings, noisy under load
Performance notes
The revolving sleeves are meant to take pressure off the wrists during triceps and hammer curl movements, and most reviewers confirm they spin, though several note the rotation is bushing based rather than ball bearing and is not as smooth as CAP's higher priced version. The medium depth knurling is grippy enough that some reviewers suggest gloves for longer sessions. Weld quality and finish came through clean on most units, with one reviewer specifically checking for rust and bad welds and finding neither.
Specifications
| Brand | CAP |
|---|---|
| Model | OBIS-34S |
| Dimensions & fit | |
| Weight Capacity Maximum | 200 pounds |
| Item Weight | 19.25 pounds |
| Item Dimensions L x W | 34.2 × 6.7 inches |
| Grip Size | 8.2 inches |
| Sleeve Length | 8.2 inches |
| Construction & materials | |
| Finish Type | Chrome |
| Material | Alloy Steel |
| Other details | |
| Grip Type | Knurled |
| Part Number | OBIS-34S |
Other CAP bars
How it compares
This product against the closest alternatives we track in bars.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| CAP Barbell 34'' Olympic Triceps BarThis product | 4.5 / 5 | 159 | 4.0 / 5 |
| Everyday Essentials Olympic Super Curl Barbell Curl BarEveryday | 4.7 / 5 | 3,900 | 4.4 / 5 |
| Olympic EZ Curl Barbell Bar 47"Olympic | 4.7 / 5 | 1,000 | 4.4 / 5 |
| ExtreSpo 47" EZ Curl Bar Weight Lifting BarExtreSpo | 4.6 / 5 | 1,300 | 4.3 / 5 |
| Yaheetech 7-Foot Olympic Barbell with CollarsYaheetech | 4.7 / 5 | 2,000 | 4.3 / 5 |
Similar bars from other brands
Questions about the CAP OBIS-34S
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the weight capacity of the CAP OBIS-34S triceps bar?
CAP rates it for 200 pounds, with the bar itself weighing about 19 to 20 pounds.
Does the bar have ball bearing sleeves?
No, reviewers note the sleeves rotate on a bushing rather than ball bearings, unlike CAP's higher priced version of the bar.
Do collars come included?
Yes, though some reviewers received clamp style collars without the mounting screw needed to attach them to the sleeve horn.