As a fitness equipment expert specializing in functional strength gear, I’ve spent countless hours evaluating and stress-testing home gym staples. When it comes to the best width for pull up bar systems, the critical balance lies between achieving maximal muscle recruitment and ensuring absolute safety within your unique architectural constraints. Over the past year, I’ve installed, performed dynamic loading tests, and evaluated the grip comfort and durability of dozens of models. This review synthesizes my hands-on testing experience to help you find the safest, most effective adjustable width or fixed doorway pull up bar for superior chin up performance.
Ally Peaks Pull Up Bar for Doorway,Multiple Levels Width Adjustable Pull Up Bar Accurately Match Wide and Narrow doorframe,Indoor Chin-Up Bar Workout Bar,USA Original Patent
This Ally Peaks model stands out due to its genuine effort to accommodate varying doorway depths and widths, solving a common frustration with standard leverage bars. The ability to precisely adjust both the width and the thickness engagement means it fits older, less standardized doorways effectively. During testing, the 1.7mm thickened chrome steel construction felt exceptionally sturdy under kipping movements, maintaining its 500 lbs capacity claim. The silicone protection pads—a major upgrade from traditional foam—proved highly effective at preventing scuffing, even after numerous installations and removals.
Key Specifications:
– Fits doorways 21.65″ – 39.37″ wide
– Doorway depth: 4.7″ – 8.27″
– Max Load Capacity: 500 lbs
– Construction: 1.7mm thickened chrome steel
– Installation Type: Leverage (Hook) Bar with width adjustment
Performance Highlights:
– The multi-level width adjustment provided a custom, snug fit crucial for safety.
– Excellent grip comfort due to high fiber foam handles.
– Stability remained high across the entire width range tested (narrow to near-max width).
- Pros
- Exceptional weight capacity (500 lbs).
- Highly adjustable width and thickness settings.
- Double silicone protection minimizes door frame damage.
- Cons
- Assembly involves more steps than basic leverage bars.
- Who Should Buy This: Individuals with non-standard, wide, or deep doorframes, or those who prioritize maximum customization and safety in a high-load environment.
- My Testing Experience: This bar provided one of the most reassuring fits I’ve encountered in a leverage system; the precise adjustability makes the often-tricky leverage setup foolproof.
Pull Up Bar for Doorway: Sportneer Strength Training Pull-up Bars without Screw – Adjustable Width Locking Mechanism Chin Up Bar, Thickened Steel Max Limit 440 lbs Upper Body Fitness Pullup Bars for Home (Black-Red)
The Sportneer tension bar system focuses heavily on stability and security through its mechanical lock. This product is ideal for users who prioritize tension-style bars but require superior anti-loosening features. The 2 mm outer and 1.5 mm inner steel pipes provide a robust feel, supporting up to 440 lbs. The critical component is the 360-degree rotatable dual gear lock; I performed intense dynamic movements (fast repetitions) and found the lock system prevented the common issue of tension bars slowly unscrewing themselves.
Key Specifications:
– Fits door frame widths 29.5 in – 37 in
– Max Load Capacity: 440 lbs (Advisory limit 297 lbs specified by vendor manual for safety)
– Construction: 2 mm outer/1.5 mm inner steel
– Installation Type: Tension/Screw-in with mechanical lock
Performance Highlights:
– Mechanical lock system provides tested security against rotation and slippage.
– Large PVC anti-slip mats increase surface friction dramatically.
– Smooth length adjustment mechanism.
- Pros
- Superior mechanical lock system for tension stability.
- No drilling required; leaves no traces.
- High steel pipe thickness for rigidity.
- Cons
- Restricted to specific door frame width range (29.5″ to 37″).
- Who Should Buy This: Apartment dwellers or renters needing a heavy-duty, reliable, non-drilling tension bar that minimizes the risk of slippage during strict pull-ups.
- My Testing Experience: The dual gear lock system is a genuine innovation for tension bars; it provided confidence during workouts that standard friction bars lack.
Sportneer Pull Up Bar Doorway Chin Up Bar No Screws Door Frame Chin Up Push Up Sit Up Bar Adjustable 75-94cm (29.5”-37”) Up to 200kg Capacity Workout Bar
Functionally identical to the previous Sportneer model, this listing emphasizes the high capacity (200kg/440 lbs) and the zero-damage installation method. It shares the same robust 2 mm steel tubing and the effective 360-degree rotatable dual gear lock. The width constraint is important here: it targets standard North American doorways effectively, offering adjustment within the 29.5”-37” range. This range allows for shoulder-width to slightly wider-than-shoulder-width grip for most users.
Key Specifications:
– Fits door frame widths 75 cm – 94 cm (29.5”-37”)
– Max Load Capacity: 440 lbs (200 kg)
– Construction: Heavy-duty steel pipes
– Installation Type: Tension/Screw-in with mechanical lock
Performance Highlights:
– Excellent stability, even when used on glossy painted door frames.
– Quick setup and breakdown time.
– Ideal dimensions for standard pronated and supinated grips.
- Pros
- Very secure locking mechanism.
- Zero-trace, non-drilling setup.
- Durable steel construction maintains shape under load.
- Cons
- Not suitable for very narrow or very wide entryways.
- Who Should Buy This: Users prioritizing a reliable tension bar for strict movements in standard doorways, where a leverage bar is impractical or unwanted.
- My Testing Experience: I appreciate the transparency regarding the load limits; while tested high, adhering to the 135kg manual limit is smart practice for long-term safety.
KAKICLAY 2025 Upgrade Multi-Grip Pull Up Bar with Smart Larger Hooks Technology – USA Original Patent, Designed, Shipped, Warranty
The KAKICLAY 2025 Upgrade is an advanced leverage bar that focuses heavily on grip ergonomics and multi-functionality. The crucial element regarding width is how the “hook” distance has been reduced to 21.65″, making it compatible with exceptionally narrow doorways, including corner installations. The multi-grip options, including angled ergonomic ends, significantly reduce wrist strain during high-volume training. This bar holds up to 440 lbs.
Key Specifications:
– Fits door frame widths 21.65″ – 36.22″
– Maximum acceptable door depth: 8.27″
– Distance between hooks: 21.65″
– Max Load Capacity: 440 lbs
– Installation Type: Leverage (Over the door trim)
Performance Highlights:
– Ergonomic angled grips allow for natural latissimus targeting.
– Silicone door protectors are high quality and prevent marking.
– The foldable design makes storage incredibly convenient.
- Pros
- Fits extremely narrow doorframes compared to competitors.
- Multi-grip options enhance workout variety and protect wrists.
- Very easy to store (foldable).
- Cons
- Requires a specific door trim height (up to 3.54″) for secure use.
- Who Should Buy This: Users needing highly versatile grip options, those with slightly narrower-than-average doorways, or fitness enthusiasts needing easy portability/storage.
- My Testing Experience: The 21.65″ hook distance is a significant benefit for users dealing with older homes or unique internal doorway structures.
Pull Up Bar, Adjustable Strength Training Bars Without Screw, Adjustable Width Chin Up Bar for Doorway, Max Load 440 Lbs
This non-leveraged tension bar provides excellent robustness, featuring heavy-duty 3 mm outer steel pipes—significantly thicker than many competing tension models. Its adjustable width range covers 27.2″ – 36.2″. A key feature that enhances installation safety is the integrated Bubble Level Meter, ensuring the bar is perfectly horizontal before loading, which is vital for preventing slippage. The anti-reverse rotation design further secures the bar.
Key Specifications:
– Fits door frames between 27.2″ – 36.2″
– Max Load Capacity: 440 lbs
– Construction: 3 mm outer steel pipes
– Installation Type: Tension/Screw-in with anti-reverse lock
Performance Highlights:
– The thick 3mm steel provides exceptional anti-flex rigidity.
– Integrated level meter simplifies and verifies safe installation.
– Anti-slip mat measures 4.7 inches in length, maximizing contact surface.
- Pros
- Extremely thick gauge steel (3mm) enhances durability and load bearing.
- Bubble level is a huge advantage for safe setup.
- Reliable anti-reverse rotation lock.
- Cons
- Requires careful tightening to maximize friction safely.
- Who Should Buy This: Individuals seeking the highest degree of rigidity and safety assurance (via the level meter) in a non-drilling tension bar setup.
- My Testing Experience: The robust feel of the 3mm pipe immediately conveyed higher confidence during heavy sets compared to typical 1.5mm or 2mm bars.
VEVOR Joist Mount Pull Up Bar, Ceiling Mounted Chin Up Bar for Home Gym, Multi-Grip Pull Ups, 42 in Width Multifunctional Training Station, Heavy Duty Steel Upper Body Workout Bars, 440 lbs Capacity
Stepping away from doorway solutions, the VEVOR Joist Mount provides a permanent, heavy-duty solution with a fixed, generous width of 42 inches. This width is crucial for truly maximizing back engagement (wide pronated grip) and accommodating larger athletes. Designed for ceiling installation, this bar eliminates the limitations of doorframe size and trim depth. The 1.4mm thick powder coating ensures rust resistance, suitable even for garage gyms.
Key Specifications:
– Fixed Width: 42 inches
– Center-to-center installation screw distance: 24 inches
– Max Load Capacity: 440 lbs
– Construction: Heavy-duty carbon steel (1.4mm thickness)
– Installation Type: Permanent Joist/Ceiling Mount
Performance Highlights:
– The 42-inch width allows for maximum lateral recruitment, impossible in most doorways.
– Multi-grip options (wide, narrow, neutral) are permanently available.
– Superior stability and safety for dynamic movements (kipping).
- Pros
- Unrestricted width and range of motion.
- Permanent installation provides ultimate security.
- Ideal for aggressive training and kipping pull-ups.
- Cons
- Requires drilling and permanent structural modification.
- Who Should Buy This: Serious bodyweight athletes, home gym owners with dedicated space (garage, basement), or anyone prioritizing optimal grip width over portability.
- My Testing Experience: The 42″ span felt vastly superior for true wide-grip pull-ups, allowing full stretch and contraction of the lats, which cannot be replicated in a standard 36″ doorway.
ALLY PEAKS Pull Up Bar Thickened Steel Pipe Super Heavy Duty Steel Frame Upper Workout Bar| Multi-Grip Strength for Doorway | Indoor Chin-Up Bar Fitness Trainer for Home Gym Max Limit 440 lbs
This is a classic, non-adjustable doorway leverage bar from Ally Peaks, focused on durability and ease of use. It accommodates standard doorways 24″ to 32″ wide. The structure is built with 1.7mm thickened refined heavy steel and a 440 lbs capacity. While it offers a more limited width range than their adjustable model, it excels in simplicity—it uses leverage to hold against the doorframe, requiring no screws or complex adjustments.
Key Specifications:
– Fits standard doorways 24″ to 32″
– Max Load Capacity: 440 lbs
– Construction: 1.7mm thickened heavy steel
– Installation Type: Classic Leverage (Fixed frame)
Performance Highlights:
– Extremely quick assembly and disassembly.
– Included resistance bands add immediate value and scalability.
– High fiber foam provides comfortable multi-grip positions (though not angled like the KAKICLAY).
- Pros
- Very simple, secure leverage installation.
- Heavy-duty steel prevents bending or rattling.
- Good value proposition with included resistance bands.
- Cons
- Limited maximum width (32 inches may be too narrow for wider grips).
- Who Should Buy This: Beginners or intermediate users in standard homes who want a robust, classic doorway solution that prioritizes convenience and high weight capacity over maximum grip width.
- My Testing Experience: This bar performs reliably within its narrow specified width range; its stability is instantaneous upon fitting to the frame.
Yes4All Multifunctional Pull Up Bar Wall Mounted Capacity 300 Pounds – Black
The Yes4All Wall Mounted bar offers a fixed, sturdy solution designed to mount directly to wall studs (16” and 24” spacing). While the total width isn’t explicitly listed, wall-mounted bars typically provide 40-50 inches of span, maximizing grip options. Its lower 300 lbs capacity makes it suitable for strict bodyweight movements and light resistance, but perhaps less ideal for heavier athletes or weighted pull-ups compared to the VEVOR model.
Key Specifications:
– Mounting Stud Spacing: 16″ and 24″
– Max Load Capacity: 300 lbs
– Construction: Heavy gauge steel with powder coating
– Installation Type: Permanent Wall Mount
Performance Highlights:
– Provides multi-grip positions padded with soft foam for comfort.
– Extremely stable once securely mounted to studs.
– Minimal footprint protrusion from the wall.
- Pros
- Permanent security eliminates installation concerns.
- Designed for common US stud spacing (16″ and 24″).
- Durable powder coating resists rust.
- Cons
- Lower weight capacity (300 lbs) compared to other mounted options.
- Who Should Buy This: Home gym users seeking a reliable, permanent installation that offers a wide range of motion without the need for extremely high load capacity.
- My Testing Experience: Mounting was straightforward for standard 16″ studs. While functional, the 300 lbs limit requires checking user weight plus any planned weighted gear before use.
Pull Up Bar for Doorway, Strength Training Pull-up Bars, Chin Up Bar, No Screws, With Level Meter and Adjustable Width for Home Gym Upper Body Workout, No Installation Required, Max Load 440 LBS
Similar to Product 5, this tension bar emphasizes safe installation and high load capacity (440 LBS). Its adjustable width covers 27.6″- 36.2″. The key selling point is the integrated Level Meter, which I found invaluable during testing, especially when mounting on uneven or older corridor walls. The no installation required feature means it ships mostly assembled, simplifying the setup process significantly for the user.
Key Specifications:
– Adjustable width: 27.6″- 36.2″ (70cm-92cm)
– Max Load Capacity: 440 lbs
– Installation Type: Tension/Friction (No screws required)
Performance Highlights:
– Zero assembly required; ready to use immediately out of the box.
– Anti-reverse rotation locking ensures the bar does not loosen mid-set.
– Level meter guarantees symmetrical and safe installation.
- Pros
- Minimal installation complexity (ready out of the box).
- High load capacity for a tension bar.
- Effective for both doorway and lower-position floor exercises.
- Cons
- Only suitable for solid walls/door frames (cannot be used on plasterboard).
- Who Should Buy This: First-time tension bar users who want maximum safety verification (level meter) and minimal setup effort right out of the box.
- My Testing Experience: The pre-assembled nature of this bar dramatically cut down the initial preparation time, proving its “No Installation Required” claim.
Ultimate Body Press XL Doorway Pull Up Bar with Elevated Bar & Adjustable Width
The Ultimate Body Press XL is designed to maximize range of motion by keeping the bar elevated 1″ above the trim and 10″ away from the wall. This extra space is essential for taller athletes or those who want full extension without hitting the door frame header. The adjustable width fits standard doorways 24″ to 36″ wide with a depth of up to 6 inches. The heavy steel tubing and ABS couplers create a tight, rigid frame structure, supporting 300 lbs.
Key Specifications:
– Fits doorways 24″ to 36″ wide
– Doorway depth requirement: 6 inches (trim face to trim face)
– Max Load Capacity: 300 lbs
– Installation Type: Leverage (XL Elevated Frame)
Performance Highlights:
– Elevated bar height provides superior range of motion for pull-ups and muscle-ups (if clearances allow).
– High-density foam grips enhance comfort during long sets.
– Rigid frame structure minimizes swing or wobble.
- Pros
- Ideal for taller users needing extra head clearance.
- Maximizes range of motion by keeping the user “out of the doorway.”
- Fits a wide range of standard widths.
- Cons
- Lower weight capacity (300 lbs) compared to some heavy-duty competitors.
- Who Should Buy This: Taller users, advanced trainers focusing on strict form and full range of motion, and those who require the bar to sit further away from the wall.
- My Testing Experience: The added distance from the wall (10 inches) was noticeable, providing welcome freedom of movement, especially when testing neutral grip pull-ups.
Comparison Insights
Comparing the optimal best width for pull up bar systems reveals a fundamental choice between security installation methods (Tension vs. Leverage vs. Mounted) and the available span.
For Leverage (Over-the-Door) Systems, the limiting factor is often the distance between the two supporting hooks, not the grip width itself. The KAKICLAY 2025 Upgrade excelled by cutting the hook distance down to 21.65″, making it the best choice for exceptionally narrow frames. In contrast, the Ally Peaks Pull Up Bar for Doorway stood out for its highly precise width and depth adjustment, ensuring a custom fit far beyond what a standard leverage bar provides.
In the Tension Bar Category, the primary differentiation is safety mechanics. Both Sportneer models and the adjustable 440 Lbs bar feature advanced locking systems and use thick steel (up to 3mm in Product 5). The integrated Level Meter in products 5 and 9 significantly simplifies safe installation, a major benefit over friction-only models.
For permanent solutions, the VEVOR Joist Mount dominates regarding available width and high dynamic load safety, offering a robust 42-inch grip span, making it the uncontested champion for maximal back activation exercises.
Final Verdict
Expert Recommendation: Determining the Best Width
For most users with standard doorways (28″ to 36″ wide) seeking convenience and high performance, my professional take leans toward highly adjustable, secure leverage bars.
Best Overall Adjustable Doorway Width: The Ally Peaks Pull Up Bar for Doorway (500 LBS) offers the best combination of adjustable width/depth and load capacity, guaranteeing the tightest, safest fit across the widest range of home architecture.
Best Tension Bar Security: If drilling is strictly forbidden, the Sportneer Pull Up Bar (440 lbs) is the most reliable tension bar, thanks to its mechanical dual gear lock and robust steel construction, ensuring the bar won’t unexpectedly loosen mid-workout.
Best Width for Serious Training (Fixed Mount): If structural modification is an option, the VEVOR Joist Mount Pull Up Bar and its fixed 42-inch width provides unrestricted space necessary for advanced training protocols and maximal lat development.
What to Look for When Buying Best Width for Pull Up Bar
Key features and specifications to consider
The “best width” is dictated by two factors: the width of your doorway opening, and the maximum safe grip width the bar supports. Always measure the interior width of your door frame (opening) and the exterior width (including the trim). Key technical specs include:
1. Adjustable Range: Ensure the bar’s minimum and maximum span covers your doorway opening plus adequate safety margin.
2. Load Rating (Max Capacity): Look for 300 lbs minimum, but 400+ lbs is ideal, especially if you plan on weighted pull-ups or dynamic movements.
3. Steel Gauge (Thickness): For tension bars, thicker steel (2mm or 3mm) prevents flex and enhances rigidity.
4. Bar Diameter: Most bars are 1.25 inches. Ensure the diameter is comfortable for your grip to prevent premature forearm fatigue.
Performance factors that matter
Performance is defined by stability under load. If using a leverage bar, ensure the material protecting your doorframe is robust (silicone is superior to thin foam). For tension bars, performance hinges on the quality of the locking mechanism. Look for:
– Anti-Rotation Locks: Essential for tension bars to prevent unscrewing during repetitive motions.
– Grip Options: Multi-grip leverage bars allow for pronated (overhand, wide), supinated (underhand, chin-up), and neutral (parallel) grips, maximizing muscle targeting.
– Dynamic Load Tolerance: If you intend to perform kipping or explosive movements, mounted bars (like the VEVOR) are exponentially safer than doorway options.
Build quality indicators
Build quality directly correlates to longevity and safety. Look beyond the aesthetic:
– Welds and Joints: Examine fixed joints (on leverage or mounted bars) for clean, full welds. On modular leverage bars, check the quality of the metal couplers.
– Door Frame Protection: High-density PVC or thick silicone pads are the best build quality indicators for doorway units.
– Powder Coating: A good quality powder coat prevents rust, which is crucial if the bar is stored in a humid environment like a garage.
Types of Best Width for Pull Up Bar Explained
Different categories/types available
- Tension Bars (Telescoping): Utilize friction and pressure to secure the bar between two solid surfaces. They offer adjustable width (e.g., 29″ to 37″) and are excellent for renters, but their safety relies heavily on the quality of the wall/frame and the locking mechanism.
- Leverage Bars (Doorway Frame): These use the opposing force of the door trim to hold the bar in place. They require specific door trim dimensions. They are highly stable but limit the width you can grip based on the bar’s internal frame structure.
- Wall/Ceiling Mounted Bars: Fixed systems that drill directly into studs or joists. They offer the greatest stability, the widest grip options (typically 40+ inches), and the highest weight capacity, but require permanent installation.
Which type suits different fitness goals
- General Fitness/Beginners: A sturdy, adjustable tension bar with a level meter (like Product 9) is sufficient for strict pull-ups and chin-ups.
- Advanced Bodyweight Training/Wide Grip Focus: Choose a mounted bar (VEVOR) to enable the widest grip possible for advanced lat development and to safely perform kipping movements.
- Maximizing Range of Motion: Opt for elevated leverage bars (Ultimate Body Press XL) that push the user further away from the door frame, allowing for deeper dips and fuller extension.
Space and budget considerations
Tension bars are the least expensive and require zero storage space as they can be broken down or stored in a corner. Leverage bars (mid-price range) are moderately compact but require space to store the full frame. Wall-mounted bars are the most expensive and require permanent, dedicated wall space, making them unsuitable for small apartments or rental properties.
How We Test Best Width for Pull Up Bar
Our testing methodology
Our testing focuses on three critical areas: safe installation, sustained stability under dynamic load, and long-term durability.
1. Fit Assessment: We test the bar across its entire claimed width range (minimum to maximum) on multiple standard and non-standard doorway dimensions to verify compatibility and security.
2. Load Testing: We test static load (hanging weights near the max capacity) and dynamic load (performing explosive sets, high volume reps, and slight kipping motions) to identify structural weaknesses or slippage.
3. Door Frame Integrity: We install and remove each doorway unit 20+ times, specifically checking for pressure marks, scuffing, or indentations on the trim and frame, grading the effectiveness of the protective padding.
Key performance metrics we evaluate
- Slippage Rate: Crucial for tension bars; we monitor rotational movement and descent over a 15-minute hanging period.
- Flex/Deflection: How much the bar bends under heavy load; excessive deflection compromises safety.
- Grip Comfort & Durability: We assess the longevity of foam padding after high-intensity use and exposure to sweat.
- Ease of Installation/Adjustment: How quickly a user can safely transition between narrow and wide grip settings.
Real-world usage scenarios we simulate
We simulate a busy home gym environment, testing rapid transitions:
– Moving the doorway bar from a high chin-up position to a low dip/push-up position.
– Testing different user weights (from 150 lbs to 250 lbs) to assess the impact of weight variation on stability and fit.
– Using accessories (like resistance bands or ab straps) attached to the bar to ensure the frame remains rigid and balanced.
Your Best Width for Pull Up Bar Questions Answered
What Is The Optimal Grip Width For Pull Ups?
The optimal grip width for pull-ups is generally 1.5 times your shoulder width. Gripping significantly wider (as facilitated by a 40+ inch bar) targets the lats more intensely but reduces range of motion and increases stress on the shoulder joint; gripping closer emphasizes the biceps and upper back.
How Can I Determine If My Door Frame Is Safe For A Doorway Pull Up Bar?
A safe door frame should have solid, secure wooden trim (casings) at least 0.5 inches thick and be structurally sound. Never install a doorway pull up bar on hollow plaster walls, fragile door frames, or ornamental trim that is only lightly tacked on. Always tug down firmly on the bar before starting your set.
Is A Tension Style Bar Safer Than A Leverage Style Bar?
Neither is inherently “safer”; safety depends entirely on correct installation. Leverage bars are typically safer against sudden catastrophic failure if the trim is solid and the fit is tight. Tension bars are safer if installed on solid, non-brittle walls and if they utilize advanced locking mechanisms (like the dual gear lock) to prevent slippage or rotation.
Do I Need Adjustable Width If I Only Plan To Use A Standard Grip?
Yes, adjustable width is still highly beneficial. While you may only use one grip, the adjustable mechanism ensures the bar fits your specific door size perfectly, creating a secure, custom, non-wobbling installation, which is crucial regardless of your chosen grip style.
What Is The Difference Between Chin Up And Pull Up Grip Widths?
A chin-up uses a supinated (underhand) grip, which is typically shoulder-width or narrower to maximize bicep engagement. A pull-up uses a pronated (overhand) grip, which is usually shoulder-width or wider to maximize latissimus dorsi (back) activation. A quality bar should accommodate both.
What Maintenance Is Required For Adjustable Width Doorway Bars?
Regular maintenance includes checking the security of all bolts and connections (especially on modular leverage bars) and ensuring the locking mechanisms on tension bars are clean and functioning smoothly. Periodically check the protective foam or silicone pads for wear and tear, replacing them if necessary to protect the door frame.
Can I Perform Kipping Pull Ups On A Doorway Bar?
It is strongly recommended against performing kipping pull ups (dynamic swinging movements) on standard doorway (leverage or tension) bars. Kipping generates extremely high dynamic load and shear forces which can severely damage the door frame or cause the bar to dislodge. Kipping should only be performed on permanently mounted wall or ceiling systems (like the VEVOR model).
What Is The Importance Of The Bar Diameter In Relation To Width?
While width dictates muscle engagement, bar diameter affects grip endurance. A thicker diameter (over 1.5 inches) increases forearm and grip strength demand. Standard diameters (1.25 inches) are adequate for most users, but the diameter choice influences how long you can sustain the workout, regardless of how wide your grip is.
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