Best EZ Curl Bars (2026): EZ Curl Bar Weight, How to Hold It and Olympic vs Standard

An EZ curl bar is the angled bar that makes curls and triceps work easier on the wrists, and this guide is for home lifters picking one to match their plates. It covers three picks by sleeve size, then answers the common questions: how much an EZ curl bar weighs (Olympic vs standard), how to hold it, what research shows on EZ versus straight bars, and which exercises it does well.

Best Overall (Olympic)

CAP Barbell

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Best Standard (1-inch)

ExtreSpo 47″ EZ Curl

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Best Deep Camber

CAP Barbell

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Our Selection Criteria

We split picks across the category’s real fork — 2-inch Olympic versus 1-inch standard sleeves — and then ranked on capacity, knurl feedback, sleeve rotation, and finish durability, the same criteria as our Olympic barbell roundup. CAP appears twice because it is one of the longest-running names in home free weights, publishes its specifications, and makes both a standard EZ bend and a deep super-curl bend; the standard-sleeve slot deliberately went elsewhere for the buyers CAP’s Olympic bars do not serve. Our barbell basics guide explains every spec used here.

1. Best Overall (Olympic): CAP 47″ Olympic EZ Curl Bar

CAP 47″ Olympic EZ Curl Bar

CAP Barbell

• 2-inch sleeves fit every Olympic plate you own
• Moderate camber suits curls and skull crushers alike
• Rotating sleeves with 7.5 inches of loadable length per side
• Solid steel with a 200 lb rating — ample for arm work

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Why we picked it: If your plates are Olympic — and if you followed our plates roundup, they are — this is the bar: standard camber, secure knurl and rotating sleeves. The 200 lb rating sounds modest next to power bars, but arm work does not approach it. CAP’s spec sheet lists the bar at about 17 lb (7 kg), with a 1-inch (25.4 mm) shaft, 13-inch diamond-knurled grip sections on each side, 7.5-inch loadable sleeves and a black powder-coat finish. CAP’s page states collars are not included with that bar, so check what your listing ships with and plan on a pair of spring or lock-jaw clips. Trade-offs: at 47 inches it will not sit in a full-width rack’s J-cups (curl bars rack on pins, storage hooks, or the floor), and heavy skull-crusher devotees may eventually want the deeper camber of the Super Curl below.

2. Best Standard (1-inch): ExtreSpo 47″ EZ Curl Bar, 1-inch

ExtreSpo 47″ EZ Curl Bar, 1-inch

ExtreSpo

• 1-inch sleeves fit standard (non-Olympic) plates
• Threaded collars included — plates lock solid
• The right answer for inherited standard plate sets

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Why we picked it: Plenty of home gyms run on inherited 1-inch standard plates, and for them an Olympic bar is an expensive mistake. The ExtreSpo is the straightforward standard-sleeve pick: threaded ends with spin-lock collars that hold plates rigidly — an advantage of the format, since nothing rattles on a curl — and the same 47-inch length and moderate camber as the Olympic pick. Trade-offs: standard sleeves do not rotate like Olympic sleeves, the format’s plate ceiling is lower, and if you ever migrate to Olympic plates the bar does not come with you. Buy it to match the plates you own, not the plates you plan.

3. Best Deep Camber: CAP 48″ Olympic Super Curl Bar

CAP 48″ Olympic Super Curl Bar

CAP Barbell

• Deep camber allows near-neutral hand positions
• 200 lb recommended capacity — ample for arm work
• 2-inch Olympic sleeves
• The wrist-friendliest bar of the three

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Why we picked it: The Super Curl’s deeper bends put your hands close to neutral — the position that finally makes curls and extensions comfortable for lifters whose wrists or elbows complain on shallower cambers. The retail listing for the black CAP Super Curl gives a 200 lb recommended maximum (CAP lists the same figure for its chrome version), 7.5-inch loadable sleeves and diamond-knurled 25.4 mm grips, with ring collars included — plenty for curls, extensions and light close-grip rows. Trade-offs: the deep camber shifts which muscles do the work — it is a complement to a standard EZ bend, not a replacement — and its extra height means plates sit further from the floor on deadlift-style picks; minor, but noticeable.

Specs at a Glance

Different Curl Bars: Straight vs EZ vs Super Curl

“Curl bar” covers several shapes, and the shape decides where your hands end up. That matters more than brand. (The EZ bar is sometimes called an “easy curl bar” — same thing.)

Straight bar vs EZ bar. A straight bar locks your forearms into full supination, which is the strongest position for the biceps and the least comfortable for many lifters’ wrists and elbows. The EZ bend rotates the hands slightly inward. Biceps work stays broadly comparable; comfort improves. If straight-bar curls feel fine, you can keep doing them on the barbell you already own — see our Olympic barbell roundup.

EZ bar vs super curl bar. The super curl’s deeper bends move your grip closer to neutral. That shifts some of the work toward the brachialis and forearm muscles and takes more stress off the wrist. Many lifters who own both use the EZ bar for standard curls and lying extensions and the super curl for reverse curls and on days the elbows complain.

Length. Almost every EZ and super curl bar is 47–48 inches. That is short enough for small rooms and too short for a rack’s J-cups, so plan to curl and store from the floor or a wall hook.

Olympic vs Standard Curl Bars

This is the decision that sends the most curl bars back. Match the bar to the hole in your plates: an Olympic curl bar has 2-inch sleeves for Olympic plates, while a standard bar takes 1-inch plates.

• Olympic EZ bars have 2-inch sleeves that fit plates with a 2-inch center hole, the format used by nearly every plate sold for barbells and racks today. Olympic curl bars usually have sleeves that rotate, which keeps the plates from twisting your wrists as the bar arcs up.
• Standard EZ bars have 1-inch ends, often threaded for spin-lock collars, and fit the older 1-inch plates found in many basements and inherited sets. They are lighter and lock plates tight, but the sleeves do not rotate and you cannot share plates with an Olympic barbell.
• Adapter sleeves that slide over 1-inch ends to take Olympic plates exist, but they add wobble and weight. They are a stopgap, not a plan.
• If you are starting from scratch, go Olympic. Plates are easier to find, they work on a full-size barbell later, and the bar stays useful as your gym grows. Our weight plate roundup covers what to buy.

What Actually Matters When Buying a Curl Bar

Sleeve size first, everything else second. Two-inch Olympic sleeves fit Olympic plates; 1-inch standard sleeves fit standard plates; nothing crosses over without adapter sleeves that wobble. Check the plates you own before anything else on the listing — this mismatch is the category’s most avoidable mistake.

Camber depth changes the exercise. Shallow camber keeps curls close to a straight bar with mild wrist relief; deep camber approaches neutral grip and shifts emphasis toward brachialis and forearms. Neither is superior — they are different tools, which is why serious arm training eventually owns both.

Capacity matters less than it looks. Arm exercises rarely approach the 200 lb ratings common on home curl bars, so the number mostly tells you the bar will not bend under normal use. If you want a curl bar that doubles for heavy hip thrusts or rows, buy a full-size barbell for those instead.

Loadable sleeve length. Curl bars carry less plate than barbells. Around 7.5 inches per side, as on the CAP bars, takes several standard iron plates; thick bumper plates eat that space fast. If you only own bumpers, check the fit.

Knurl, grip and finish. Knurl feel, sleeve rotation, and finish rust-resistance follow exactly the logic of full-size bars — our barbell basics guide covers all three, and garage owners should weight finish most, as ever. A 1-inch grip suits most hands; the knurl should be secure without tearing skin on high-rep sets.

Collars. Plates slide on a curl bar more than on a barbell because the bar tilts as you move. Add clips if your bar does not include them.

Know the bar’s weight. Curl bars vary by several pounds. Weigh yours once and write it in your log so your progressive overload numbers stay honest.

Who Should Skip a Curl Bar

• You already own adjustable dumbbells. Dumbbell curls let each wrist find its own angle, which solves the same comfort problem. Our adjustable dumbbell roundup covers sets that replace a rack.
• Straight-bar curls never bother you. Your Olympic barbell already does the job; a curl bar is a comfort upgrade, not a requirement.
• You have no plates in either format. Decide on the plate format first, then buy the bar that matches.
• You want strict arm work but have no bench. A curl bar pairs best with an incline bench or a preacher curl bench; plan for the bench before buying a second specialty bar.

How Much Does an EZ Curl Bar Weigh? Olympic vs Standard

An EZ curl bar has no fixed weight; the sleeves make most of the difference. CAP lists its 47-inch Olympic EZ bar, our top pick, at about 17 lb (7 kg). CAP’s 47-inch standard EZ bar with solid 1-inch ends (model RB-47) is listed at about 11 lb with a 200 lb capacity. Olympic bars carry heavier 2-inch rotating sleeves; standard bars are a solid 1-inch rod end to end.

Count the bar in your total. A 17 lb Olympic EZ bar with a 25 lb plate on each side is 67 lb, not 50; the same plates on an 11 lb standard bar make 61 lb. Spin-lock collars and ring collars add weight too, so weigh bar and collars together once and log that figure.

How to Hold an EZ Curl Bar

An EZ bar has two pairs of bends, and which pair you grip changes the exercise:

• Outer (wide) bends, palms up: the default curl grip for most lifters, roughly shoulder width, which lets your elbows stay at your sides.
• Inner (close) bends, palms up: a narrower curl; also the grip for preacher curls if your shoulders are narrow.
• Inner bends, palms down: lying triceps extensions (skull crushers), overhead extensions and close-grip floor presses, with elbows tucked.
• Outer bends, palms down: reverse curls, which shift more of the work to the brachioradialis and forearm extensors.

Set both hands on matching angles so the bar balances; if one end dips, a hand is off its bend. Wrap your thumbs around the bar rather than using a thumbless grip, because the angled sections make it easier for a loose bar to roll out of your hands at the bottom of a curl or over your face on an extension. On skull crushers, have the bar handed to you or start with it resting on your thighs, and lower it slowly: there is no rack to catch a curl bar.

EZ Bar vs Straight Bar: What the EMG Research Shows

The most direct comparison is a 2018 study in PeerJ by Marcolin and colleagues. Twelve men with at least three years of training did 10 reps at 65% of their one-rep max with a straight barbell, an EZ bar and alternating dumbbells, on a 3-second metronome tempo, while muscle activity was recorded.

• EZ bar vs straight bar: no significant difference in biceps or brachioradialis activity. The EZ bar was numerically highest for the biceps on the lifting phase, about 7% above the straight bar.
• Barbells vs alternating dumbbells: the EZ curl produced more biceps and brachioradialis activity than the dumbbell curl over the whole rep.
• Authors’ conclusion: the EZ curl was the most effective of the three on overall activity, and the small EZ-versus-straight gap means the choice can come down to grip comfort.

That supports the practical case for the EZ bar: the bend reduces how far you turn your forearms palm-up, and you give up nothing measurable in muscle activity by using it. Keep the limits in mind. EMG measures activation, not muscle growth, and 12 lifters is a small sample, so read it as “no meaningful difference” rather than proof the EZ bar builds more muscle.

EZ Curl Bar Exercises Worth Programming

A curl bar covers more than curls. These are the movements it handles well at home:

Progress in small steps: a pair of 2.5 lb plates adds 5 lb, which is a large jump on an 8-rep curl, so add reps first and weight second. For strict curls, pair the bar with a preacher curl bench.

EZ Curl Bar Plate Math: Totals and How Much Fits

Because curl bars are light, the bar is a bigger share of every set than it is on a 45 lb barbell. Totals with common plate pairs:

Two limits cap the top end. Sleeve length: CAP’s Olympic curl bars have 7.5 in of loadable sleeve per side, which takes several iron plates but only a couple of thick bumpers. And capacity: CAP rates its Olympic EZ bar and its standard RB-47 at 200 lb, far above what curls and extensions need, but a reason not to use a curl bar for heavy rows or hip thrusts. Smaller jumps make better progress on arm work; 2.5 lb plates (5 lb per jump) are worth owning if your plate set starts at 5 lb.

Bottom Line: Which Should You Buy?

Olympic plate owners: the CAP Olympic EZ. The sensible default — check the sleeve size and buy once.

Standard plate sets: the ExtreSpo 1-inch. Match the plates you actually own — collars included.

Cranky wrists and elbows: the CAP Super Curl. Deep camber, near-neutral hands, collars included.

Frequently Asked Questions

What is the best curl bar for a home gym?

The best curl bar is the one that fits your plates. With 2-inch Olympic plates, the CAP 47″ Olympic EZ Curl Bar is our pick; with 1-inch standard plates, the ExtreSpo 47″ EZ Curl Bar. If your wrists or elbows complain on an EZ bend, the CAP 48″ Olympic Super Curl Bar’s deeper camber is the more comfortable choice.

What are the different types of curl bars?

Four main types: straight curl bars (palms fully up), EZ curl bars (a moderate zigzag that angles the palms slightly in), super curl or deep-camber bars (palms nearly facing each other), and triceps or hammer bars with parallel handles. Each comes in Olympic (2-inch) or standard (1-inch) sleeve versions.

What is the point of an EZ curl bar over a straight bar?

The cambered grip reduces the forced full supination that aggravates many lifters’ wrists and elbows on straight-bar curls, letting arm work continue pain-free. Research shows broadly comparable biceps activation between the two — comfort, not magic, is the sell.

Should I get an Olympic or standard EZ curl bar?

Match the plates you own. Olympic bars have 2-inch sleeves, usually rotate, and share plates with a full-size barbell. Standard bars have 1-inch ends for older plate sets and lock plates tight with spin-lock collars. If you own no plates yet, go Olympic.

How much does an EZ curl bar weigh?

It varies by model: CAP lists its 47-inch Olympic curl bar at about 17 lb (7 kg), most Olympic EZ bars land somewhere in the mid-teens to mid-20s of pounds, and standard 1-inch bars usually weigh less. Weigh yours once on a bathroom scale and write it in your training log.

Is a super curl bar better than an EZ bar?

Not better, different. The deeper bends put your hands closer to neutral, which many lifters with sensitive wrists or elbows find more comfortable, and they shift some work to the brachialis and forearms. The standard EZ bend stays closer to a classic biceps curl.

Can I use an EZ curl bar in my squat rack?

Not in the J-cups — at 47–48 inches it is far narrower than rack width. Curl bars live on the floor, on storage hooks, or across a bench. Plan storage; a floor-dwelling bar becomes a toe hazard fast.

Do I need a preacher bench to go with it?

No — standing curls, spider curls off an incline bench, and lying extensions cover the bar’s repertoire with equipment you likely own. A preacher bench adds strictness, not necessity; our preacher curl bench guide covers when one is worth the floor space.

How much does a standard EZ curl bar weigh?

Less than an Olympic one. CAP lists its 47-inch standard EZ bar with solid 1-inch ends at about 11 lb with a 200 lb capacity, while its 47-inch Olympic EZ bar with 2-inch rotating sleeves is about 17 lb (7 kg). Spin-lock collars add a little more, so weigh bar and collars together once.

Which grip should I use on an EZ curl bar?

For standard curls, most lifters use the outer bends with palms up, about shoulder width. Use the inner bends for close-grip curls and for triceps work such as skull crushers and close-grip floor presses. Turn your palms down on the outer bends for reverse curls. Wrap your thumbs around the bar in every grip.

Can you do skull crushers with an EZ curl bar?

Yes, it is one of the bar's main uses. Grip the inner bends with palms facing your feet, lie on a flat bench, and lower the bar under control to your forehead or just behind your head, keeping elbows pointed at the ceiling. Start light and keep your thumbs wrapped, since the bar travels over your face.

Do you count the weight of the EZ bar when logging lifts?

Yes. A 17 lb Olympic EZ bar with a 25 lb plate on each side is 67 lb, not 50. Logging only the plates makes it harder to compare sessions on different bars or to switch to dumbbells later. Weigh your bar and collars once and add that figure to every set.

Sources

• CAP Barbell RB-47 47-inch regular E-Z curl bar specifications (Iron Company listing)
• Marcolin et al., PeerJ 2018 — Differences in electromyographic activity of biceps brachii and brachioradialis while performing three variants of curl
• International Weightlifting Federation — Sport Equipment Licensing Guidelines (TCR 3.3.3, bar specifications)

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