Buy EZ curl bars – Curl bars with 30 & 50 mm sleeves

EZ curl bars for targeted bicep and tricep training

An EZ curl bar, also known as a curl bar or EZ bar, is a barbell with angled grip sections. These allow for different grip positions for exercises such as bicep curls, reverse curls, and tricep extensions. Which version suits your workout depends in particular on the grip curvature, the grip diameter, and the appropriate weight plate sleeve.

At motion sports, you will find EZ curl bars with 30 mm and 50 mm sleeve diameters – including classic curl bars, more steeply angled super EZ bars, and fat bars with an extra-thick grip. While the grip curvature influences hand positioning, fat bars place additional demands on grip strength. The range also includes ATX® curl bars such as the Curl Bar Pro and the camouflage EZ curl bar.

When choosing, pay attention to the compatibility with your weight plates as well as the own weight, total length, usable sleeve length, and maximum load capacity.

Targeted bicep training with the ATX® EZ curl bar – preacher curls on the curl bench

What should you look for when buying an EZ curl bar?

The right EZ curl bar enables a comfortable grip and matches your weight plates as well as your planned exercises. The most important factors are the sleeve diameter, grip curvature, grip diameter, and dead weight. It is also worth comparing the dimensions and construction of the sleeves.

Matching your weight plates

Weight plate mount: 30 or 50 mm

Choose the sleeve diameter that matches the hole of your weight plates: A 30 mm EZ curl bar requires matching 30 mm plates, a 50 mm version requires matching plates with a 50/51 mm hole. The specification describes the outer sleeve areas for the weights – not the thickness of the handle.

If you already own weight plates, their hole diameter is the primary selection criterion. Also, pay attention to the matching collars and whether these are included in the scope of delivery.

Select grip position strategically

Grip curvature: SZ or Super-SZ

The grip curvature, together with the grip width, determines the angle at which your hands grasp the bar. A classic EZ-bar offers moderately angled grip areas. A super-EZ bar features more pronounced bends, thereby allowing for different hand positions.

Which version is more suitable depends on your preferred exercise and your individual mobility. Compare in particular the grip areas you actually use for bicep curls, reverse curls, or tricep extensions. A stronger curvature is not automatically more comfortable.

Securely grasp or challenge grip strength

Grip diameter & knurling

The grip diameter influences how completely you can wrap your hands around the EZ bar. Depending on the version, the standard models in our range have a grip diameter of 25, 28, or 30 mm. The fat bars with a 50 mm grip place additional demands on grip strength. As a result, the grip can become the limiting factor for these models before the biceps or triceps are fully fatigued.

The surface also affects the hold: knurling supports a secure grip, while its texture determines the feel of the handle. The EZ fat bars we offer do not have knurling.

Adjust training weight accordingly

Dead weight & maximum load capacity

The dead weight of the EZ curl bar forms the starting load for every exercise. Together with the weight plates and collars, it results in the total training weight. Especially for reverse curls, triceps exercises, or a low starting weight, a lighter bar can be useful.

The maximum load capacity should be considered separately. It describes the specified weight limit of the respective model. A heavier bar is not automatically more durable; even a lightweight tubular construction can be designed for high loads.

Enough space for handle and weights

Total length & usable clamping length

The total length alone says little about how much space is available for your hands and weight plates. The inner grip width, the position of the angled grip areas, and the usable sleeve length per side are also decisive factors.

How many plates can be loaded depends on their thickness. Wide plates take up more sleeve length than narrow plates of the same weight. Additionally, there must be enough space left to attach the collars completely and securely.

Compare recording construction

Storage & Processing

EZ curl bars differ in whether their weight plate sleeves are fixed or rotating. Rotating sleeves can move independently of the grip section. Depending on the model, plain bushings, ball bearings, or needle bearings are used for this purpose. However, the type of bearing alone does not determine the quality of the bar.

For controlled arm training, smooth rotation without noticeable catching, well-finished transitions, and a surface appropriate for the intended use are relevant. Also, pay attention to the maintenance instructions: coatings and bearing designs may have different requirements.

What types of EZ curl bars are there?

Klassische SZ-Stangen bei motion sports kaufen

Classic EZ curl bars

A classic EZ curl bar features moderately angled grip areas. Depending on where and how you grip the bar, you can achieve different grip widths and hand positions for bicep curls, reverse curls, and tricep exercises. In our range, you will find classic curl bars with 30 mm or 50 mm weight plate sleeves, as well as various designs in terms of net weight, length, and bearing type.

  • Advantages: Versatile use for curl and tricep exercises; various sleeve sizes and configurations available.
  • Things to consider: The angle and distance of the grip areas vary depending on the model.
  • When to choose? If you are looking for a versatile curl bar with a moderate grip curvature and standard grip.
View 50 mm EZ bar.
Super-SZ-Stangen bei motion sports kaufen

Super EZ curl bars

A super EZ curl bar features more pronounced bends than a classic curl bar. In certain grip areas, this allows for a more approximated neutral grip position, where the palms face each other more directly.

This grip geometry can be comfortable for curl and triceps exercises. Whether it is right for you, however, depends on your preferred grip width, the exercise, and your individual mobility.

  • Advantages: Additional grip angles due to a more pronounced curvature.
  • Things to note: A stronger bend is not automatically more comfortable; the decisive factor is the grip position actually used.
  • When to choose? If you specifically prefer more angled grip areas or would like to supplement the grip position of a classic EZ curl bar.
View 50mm super EZ curl bar.
SZ Fat Bar 50 mm bei motion sports kaufen

SZ Fat Bars & Super-SZ Fat Bars

A fat bar is characterized by an especially thick grip. Our EZ fat bars have a grip diameter of 50 mm and are available with both classic EZ and Super-EZ bends.

The larger diameter makes it harder to wrap your hand completely around the bar and increases the demands on your grip strength. As a result, the grip may limit the number of repetitions you can perform or the amount of weight you can use.

  • Benefits: Combines curl and tricep exercises with an additional grip strength requirement.
  • Note: The offered models have no knurling. Plan your training weight accordingly.
  • When to choose? If you want to deliberately train your grip strength and complement your training with standard grips.
View SZ Fat Bars 50mm.

EZ curl bars compared – which model suits your training?

Property EZ curl bar 30 mm ATX® Curl Bar Pro Super EZ curl bar 50 mm EZ Curl Bar 50 mm Super-SZ Fat Bar 50 mm
Disk mount 30 mm 50 mm 50 mm 50 mm 50 mm
Handle curvature SZ SZ Super-SZ South German (Süddeutsche Zeitung) Super SZ
Handle diameter 30 mm 28 mm 25 mm 50 mm 50 mm
Dead weight 6.3 kg 12 kg 7.5 kg 3.3 kg 3.5 kg
Overall length 120 cm 135 cm 125 cm 120 cm 120 cm
Usable recording per page 17 cm 26 cm 19 cm 7.7 in 7.7 in
Max. Load Capacity 170 kg 300 kg 180 kg 200 kg 200 kg
Primary area of deployment Classic arm workout Arm training with heavier loads More curved grip areas Additional grip strength focus Grip-focused arm training with an angled grip position
EZ curl bar 30 mm
Disk mount
30 mm
Handle curvature
SZ
Handle diameter
30 mm
Dead weight
6.3 kg
Overall length
120 cm
Usable recording per page
17 cm
Max. Load Capacity
170 kg
Primary area of deployment
Classic arm workout
ATX® Curl Bar Pro
Disk mount
50 mm
Handle curvature
SZ
Handle diameter
28 mm
Dead weight
12 kg
Overall length
135 cm
Usable recording per page
26 cm
Max. Load Capacity
300 kg
Primary area of deployment
Arm training with heavier loads
Super EZ curl bar 50 mm
Disk mount
50 mm
Handle curvature
Super-SZ
Handle diameter
25 mm
Dead weight
7.5 kg
Overall length
125 cm
Usable recording per page
19 cm
Max. Load Capacity
180 kg
Primary area of deployment
More curved grip areas
EZ Curl Bar 50 mm
Disk mount
50 mm
Handle curvature
South German (Süddeutsche Zeitung)
Handle diameter
50 mm
Dead weight
3.3 kg
Overall length
120 cm
Usable recording per page
7.7 in
Max. Load Capacity
200 kg
Primary area of deployment
Additional grip strength focus
Super-SZ Fat Bar 50 mm
Disk mount
50 mm
Handle curvature
Super SZ
Handle diameter
50 mm
Dead weight
3.5 kg
Overall length
120 cm
Usable recording per page
7.7 in
Max. Load Capacity
200 kg
Primary area of deployment
Grip-focused arm training with an angled grip position

Training with the EZ curl bar – properly adjusting grip, weights, and accessories

After choosing a suitable EZ curl bar, the key is to combine it effectively with weights and accessories. Which grip position suits your exercise? How do you calculate your training weight? And which plates allow for sufficient range of motion? Here you will find answers for the practical use of your curl bar.

EZ curl bar or straight barbell: Which grip suits you?

The most important difference lies in the orientation of the hands. With bicep curls using a straight barbell, the palms face largely upward in an underhand grip. The angled grip sections of an EZ curl bar allow for a less externally rotated forearm position.

Which version is more comfortable depends on your individual mobility and the specific grip geometry. Therefore, an EZ curl bar is not inherently better for muscle building. The decisive factor is that you can perform your chosen exercise with a secure grip, comfortable hand positioning, and controlled movement. Choose a grip width that matches the bar’s intended grip sections. An especially narrow or wide position is not automatically more advantageous.

Which exercises are suitable for an EZ curl bar?

The curl bar is primarily used for bicep and tricep exercises. Different grip positions and body postures allow for several variations:

  • Standing bicep curls: Hold the bar with an underhand grip and lift it by bending your elbows. Avoid using your upper body to generate momentum to assist the movement.
  • Preacher curls on a curl bench: Your upper arms rest on the designated pad. The grip width and bar shape must match the bench, and the rack should also be easily accessible.
  • Reverse curls: Grip the bar with an overhand grip. Select the weight for this variation separately, as the load from your regular bicep curls is not automatically suitable.
  • Lying tricep extensions: On a suitable weight bench, move the bar by bending and extending your elbows. Ensure that the grip position and plate size allow for sufficient range of motion.

For every variation, the following applies: The training weight must match the respective exercise. If the chosen load can only be managed with significant compensatory movements, you should reduce it.

How do you calculate the actual training weight?

The total weight includes the bar, all loaded weight plates, and the collars. You should therefore always include the dead weight of an EZ curl bar in your calculations. Example: A 12 kg curl bar with a 5 kg plate on each side equals 22 kg plus the weight of the collars.

When switching to a different EZ curl bar, the total load may change despite using identical plates. Therefore, in addition to the plates used, note down the bar model or its dead weight. This will help you keep track of your training progress.

Why are small weight plates useful for arm training?

With low training weights, even a small additional plate can cause a large jump in resistance. If you add 1.25 kg per side, the total load increases by 2.5 kg. This turns 10 kg into 12.5 kg – an increase of 25 percent.

With small weight plates, you can adjust the load in finer increments. This helps if the next larger weight step negatively affects your controlled execution. Load both sides evenly and factor the bar's dead weight into your planning.

Which weight plates are suitable for an EZ curl bar?

In addition to the correct bore diameter, the outer diameter and the plate thickness are important. Especially during tricep extensions or movements close to the body, large plates can restrict the range of motion.

A general limit like "maximum 10 kg plates" is not very meaningful: weight plates with the same weight can have different dimensions. Therefore, select plates based on their actual size and the planned exercise. The plate thickness also determines how much weight fits onto the sleeve. Add the thickness of the intended plates per side and account for the space required for the collar. The setup must remain within both the usable sleeve length and the specified load capacity.

Which collars fit the curl bar?

Collars must match the diameter and the design of the sleeve. Smooth sleeves require suitable clamp or spring collars. Star collars require a matching threaded sleeve. Before purchasing, check if collars are already included. They must sit completely on the sleeve and reliably secure the plates. Check their fit even if you intend to use existing collars on a new bar.

Does an EZ curl bar fit your weight rack?

The total length of the bar alone is not sufficient for evaluation. The decisive factor is whether the distance between the racks matches the suitable resting areas between the sleeves. The bends of an EZ curl bar can further limit the usable resting positions. Therefore, compare the measurements of the bar and the rack before combining them. The curl bar must rest stably and be easy to lift and replace safely. Particularly compact models do not automatically fit on the wide racks of a power rack.

For preacher curls, it is also important that you can return the bar to the intended rack in a controlled manner from your training position.

Suitable accessories for your EZ curl bar.

Hantelscheiben 30 und 50 mm

Weight plates 30 and 50 mm
Verschluss in 30mm und 50 mm bei motion sports kaufen

Dumbbell closure in 30 and 50 mm
Verstellbare Hantelbank

Buy an adjustable weight bench – train flexibly

All you need to know.

Frequently asked questions about the EZ curl bar.

SZ bar, curl bar, and EZ bar are frequently used as terms for the same type of barbell. Typical are the angled grip sections, which allow for different hand positions for curl and tricep exercises. However, the name alone says nothing about the grip curvature, weight sleeve, or dead weight. Therefore, compare the technical specifications of the respective model.

The bore of your weight plates is the decisive factor. For 30 mm plates, you need an EZ curl bar with a 30 mm sleeve, and for 50/51 mm plates, a version with a 50 mm sleeve. This specification refers to the sleeve diameter, not the grip diameter. Also, make sure to get matching collars and sufficient sleeve length for your plates.

No. The sleeve diameter does not indicate whether the sleeves are fixed or rotating. The bearing types also differ: The ATX® Curl Bar Pro has bronze bushings, while the ATX® Camouflage EZ-Bar has needle bearings. Other models use ball bearings or fixed sleeves. The product description of the respective bar is the deciding factor.

The dead weight depends on the model and cannot be derived from the sleeve diameter alone. The classic 30 mm EZ curl bar with smooth sleeves weighs 6.3 kg, the ATX® Curl Bar Pro 12 kg. Despite its thick grip, the Super EZ Fat Bar weighs only 3.5 kg. The total training weight also includes all loaded plates and collars.

Not necessarily. A super EZ curl bar has more pronounced bends, which allows for different hand positions. Whether these are more comfortable depends on the exercise, your grip width, and your individual mobility. Choose the version whose grip areas allow for a comfortable hand position and controlled execution of movement.

This depends on the specific product and the chosen variant. Please check the scope of delivery explicitly on the product page. Pictured weight plates or collars are not automatically included. If you wish to continue using existing collars, they must match the diameter and the design of the sleeve.

In principle, the bore hole, sleeve length and permissible load must match the bar. Additionally, the outer diameter of the plates must not hinder your movement. Large plates can be particularly distracting during close-to-body exercises and tricep presses. Therefore, the actual dimensions are the deciding factor, not a general weight limit per plate.

Pay attention to a low dead weight and small incremental weight steps. A light bar allows for a low starting load. However, a fat-bar model is not automatically easier to handle despite its low dead weight: the thick grip increases the demands on grip strength. Therefore, in addition to the weight, consider the grip diameter and the planned exercise.

Yes. An EZ-curl bar can be used for exercises such as bicep curls, reverse curls, and lying triceps extensions. Choose an appropriate grip position for each exercise and adjust the training weight separately. For lying exercises, you will also need a suitable, sufficiently sturdy weight bench.

Not automatically. Compare the distance between the rack shelves with the appropriate contact areas of the bar. The total length alone is not enough, because the sleeve areas and the bends in the grip section also take up space. The EZ-curl bar must be able to rest stably and be lifted and racked securely.

Ordering, Delivery & Care.

Everything you need to know.

What should I check before ordering an EZ curl bar?

Check whether the sleeve diameter, grip design, and dead weight are compatible with your existing equipment and planned exercises. Also, take the usable sleeve length into account to ensure your weight plates and collars have sufficient space. You can find the exact scope of delivery on the respective product page.

How will my curl bar be delivered?

You can find the delivery time and shipping information on the product page or at checkout. Whether fasteners or other accessories are included depends on the model ordered. Upon receipt, please check that the delivery is complete and check for any visible transport damage. In case of any issues, photos of the packaging and the affected areas will help us process your request quickly.

Do the bearings of an EZ curl bar need to be lubricated?

That depends on the bearing design of the specific model. Do not apply oil or lubricant to the housings as a general rule. Observe the manufacturer's instructions, as some bearings are designed to be maintenance-free. If there is noticeable play, grinding noises, or rotation that catches, the cause should be identified before further use.

How do I store my EZ curl bar correctly?

Store the bar in a dry place, secured against falling or rolling, ideally on a suitable barbell rack. Remove the weight plates before storage. Ensure that the rack fits the curved shape and dimensions of the bar and that the surface is not unnecessarily damaged.
motion sports Kundenservice
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Still unsure which EZ curl bar is right for you?

Whether 30 or 50 mm, classic curl bar, super curl bar, or fat bar – we will help you find the right version for your exercises and existing weight plates. We are also happy to assist with any questions regarding collars, weight benches, and racks. Our team is happy to help you with your selection – by phone (08142/ 448666), via e-mail, or directly in our showroom. Together, we will find the optimal solution for your goals.

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