Max Climbing
One Arm Trainer
One Arm Trainer
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Description
Description
The One Arm Trainer is a suspended training tool designed to progressively load one arm by shifting the balance point of the system.
It is suited for climbers who want to build toward one-arm strength without immediately requiring full bodyweight on a single arm.
What this solves
Training one-arm strength is difficult because the jump from two arms to one arm is too large for most climbers.
How this solves it
By shifting the rope away from the center, more load is transferred to one arm while the other arm assists. This allows gradual progression toward one-arm loading.
Why this tool
Unlike fixed setups, this creates progressive unilateral loading without added weights:
- Adjustable load between arms
- Continuous progression toward one-arm strength
- Works with different grip attachments
However, the instability from the rope reduces precision compared to fixed systems.
Best for
Intermediate / Advanced — for climbers working toward one-arm hangs or unilateral pulling strength.
Key features
Progressive one-arm loading via rope position
Works with multiple grip attachments
Portable and easy to set up
No additional weights required for progression
Used with
Basic handles or grip attachments
Anchor point (pull-up bar, beam, etc.)
What’s in the box
One Arm Trainer (wood + selected holds)
Rope + rope length adjuster
Dimensions
Material: Rubberwood
Installation guide:
Step 1: Basic handles assembly
Step 2: Attach rope to O.A.T
Step 3: Rope length adjuster installation
Step 4: Hang it all up
Shipping & Returns
Shipping & Returns
Returns
Customers cover return shipping costs unless the item is defective.
Belgium
• €6 to a service point (Bpost or DPD), €6.50 at home
• Free shipping from €60
• Delivery: 1–2 business days
Netherlands, Germany, France, Luxembourg
• €9 (home or DPD service point)
• Free shipping from €60
• Delivery: 2–3 business days
Zone A — Austria, Croatia, Czech Republic, Denmark, Estonia, Finland, Ireland, Italy, Poland, Portugal, Spain (mainland)
• €12
• Free shipping from €150
• Delivery: 3–6 business days
Zone B — Latvia, Romania, Slovenia, Sweden
• €15
• Free shipping from €150
• Delivery: 3–6 business days
Zone C — Greece, Hungary, Slovakia
• €18
• Free shipping from €150
• Delivery: 4–7 business days
Zone D — Bulgaria, Lithuania
• €20
• Free shipping from €150
• Delivery: 4–7 business days
Rest of Europe
• Norway: €25, free from €150
• Serbia: €25
• Switzerland: €35
• Cyprus: €40 (€35 from €150)
• Malta: €40
• North Macedonia, Albania, Kosovo, Montenegro: €40
• Balearic Islands: €50
United Kingdom 🇬🇧
• Orders below £150 / €150 are not accepted (UK VAT rules)
• Free shipping from €150
• Delivery: 3–7 business days
• Import duties/taxes may apply on arrival
United States 🇺🇸
• €50 flat rate, DDP: all import fees and tariffs included (heavy shipments €150)
• Delivery: 4–7 business days
Rest of world 🌍
• Canada €35, China €40, most other countries €40–€60
• Your exact rate is shown at checkout. Not listed? Contact us for a quote.
The Maxgrips and Maxgrip Hybrid can be inserted in the One Arm Trainer. This way you can improve your crimp and sloper strength as well.
Insert different holds
The One Arm Trainer full combo comes with 4 sets of holds, each working your forearms differently. Check out our "how to use" to see the function of the grips.
Increase difficulty by moving the rope to the side
When the rope is centered, your weight is distributed evenly between left and right arm. When the rope is placed more to the side, there will be more weight on the arm and hand on that side, as long as you keep the O.A.T levelled.