ISOLATOR Side Port Weight Arm
🚨 Did you purchase the Adjustable Multi-Horn? If so, you already have the Side Port Weight Arm, Internal Shaft and Pin so you do not need to purchase this item.
⚠️ PRESALE INFO – READ BEFORE ORDERING
PRESALE FOR THIS PRODUCT ENDS 7/21/25
This product is available on a two-week presale. Orders placed during this time are guaranteed to be included in our next production run. After the presale ends, you can still order, but inventory is limited to the extra quantity we purchase—and availability is not guaranteed.
If you order after the presale, your item may take longer to ship depending on remaining stock levels.
⚠️ Important Note: Pricing is subject to change due to potential tariff increases on imported materials. Locking in your order during the presale not only guarantees availability—but also protects you from possible price hikes.
To secure your spot and get your gear sooner, we strongly recommend ordering during the presale window.
DESCRIPTION
WARRANTY
Structural: ONE YEAR WARRANTY
Subject to the requirements, exclusions and limitations stated below, your Bulletproof Fitness Equipment product’s structural are warranted against defects in materials and workmanship arising from normal use for one (1) year from the original purchaser (non- transferable).
Wear Guards / Consumables / Upholstery: 90 Day Warranty
Subject to the requirements, exclusions and limitations stated below, your Bulletproof Fitness Equipment product’s wear guards and upholstery is warranted against defects in materials and workmanship arising from normal use for 90 days of the original purchaser (non- transferable).
Products are made in China. We do not collect taxes, duties and customs fees for international orders.
🔄 WHY MOVE THE ARM TO THE OUTSIDE?
🔄 Why Move the Arm to the Outside?
Simple: Freedom.
Until now, the weight arm on the Isolator was locked in line with the upright. That meant the upright blocked motion in one direction. Which was by design—for safety first. (Remember those cringe-worthy bicep tear videos during unsupported preacher curls? Yeah, so do we.)
But for advanced lifters and controlled environments? We’re unleashing the beast.
Now, with the Isolator Side Port Weight Arm:
• 🚀 Full 2-Way Rotation: Do a leg extension straight into a seated leg curl without changing position.
• 💪 Preacher curl into triceps extension? Done.
• 🔁 Swing arm in either direction, uninterrupted.
• ⚖️ Built-in counterweight support: Makes even our heavy-duty curl arms feel balanced and buttery smooth.
🔩 PRECISION STOPS WITH OUR CUSTOM PIN
We’re still giving you full safety and control over where the movement begins and ends.
Use our rubber-coated safety stop pin:
• Place it above the pivot point to let the weight arm rest on the counterweight portion when having the weight start out in front of the upright for movements like preacher curls, leg extensions, etc..
• Place it below the pivot to have the pin make contact on the actual weight arm itself when setting up the weight behind the upright for movements like seated leg curls, horizontal tricep extensions, etc..
• Move where you place the pin to customize your start angle for different tension profiles.
PIN FITS 1" OR 5/8" HOLES
This means you can control how heavy the start of each rep feels—and dial in your training like never before while still having a safety stop to prevent injury!
🧬 BUILT FROM YOUR EXISTING GEAR
No need to re-buy your whole setup. This is not a whole new unit—just a smart-as-hell upgrade:
• Reuse your current rotational shaft
• Reuse your existing weight arm
• Reuse your existing weight horn
• Just swap out the center female port with the Isolator Side Port Weight Arm
➡️ Comes with easy step-by-step instructions. A few bolts, a couple flexes, and you’re ready to roll.
⚙️ WHO IS THIS FOR
• Lifters wanting immediate supersets without resetting their station
• People who need or prefer a counterweight for balance and smoother movement
• Advanced athletes who know when and how to train around safety stops
• Anyone who wants premium versatility without the premium price tag
🏆 WHY WE DIDN'T DO THIS FIRST
🏆 Why We Didn’t Do This First
Because Bulletproof means Bulletproof.
When we launched the Isolator, we prioritized safety for the masses—fixed stop points, built-in limits, no surprises. But now that the Isolator’s proven itself, we’re giving elite users what they’ve been asking for: no-limits functionality that still offers all the built-in controls if needed.
Use it smart. Use it hard. Use it to build muscle without wasting time.
🔄 Why Move the Arm to the Outside?
Simple: Freedom.
Until now, the weight arm on the Isolator was locked in line with the upright. That meant the upright blocked motion in one direction. Which was by design—for safety first. (Remember those cringe-worthy bicep tear videos during unsupported preacher curls? Yeah, so do we.)
But for advanced lifters and controlled environments? We’re unleashing the beast.
Now, with the Isolator Side Port Weight Arm:
• 🚀 Full 2-Way Rotation: Do a leg extension straight into a seated leg curl without changing position.
• 💪 Preacher curl into triceps extension? Done.
• 🔁 Swing arm in either direction, uninterrupted.
• ⚖️ Built-in counterweight support: Makes even our heavy-duty curl arms feel balanced and buttery smooth.
We’re still giving you full safety and control over where the movement begins and ends.
Use our rubber-coated safety stop pin:
• Place it above the pivot point to let the weight arm rest on the counterweight portion when having the weight start out in front of the upright for movements like preacher curls, leg extensions, etc..
• Place it below the pivot to have the pin make contact on the actual weight arm itself when setting up the weight behind the upright for movements like seated leg curls, horizontal tricep extensions, etc..
• Move where you place the pin to customize your start angle for different tension profiles.
PIN FITS 1" OR 5/8" HOLES
This means you can control how heavy the start of each rep feels—and dial in your training like never before while still having a safety stop to prevent injury!
No need to re-buy your whole setup. This is not a whole new unit—just a smart-as-hell upgrade:
• Reuse your current rotational shaft
• Reuse your existing weight arm
• Reuse your existing weight horn
• Just swap out the center female port with the Isolator Side Port Weight Arm
➡️ Comes with easy step-by-step instructions. A few bolts, a couple flexes, and you’re ready to roll.
• Lifters wanting immediate supersets without resetting their station
• People who need or prefer a counterweight for balance and smoother movement
• Advanced athletes who know when and how to train around safety stops
• Anyone who wants premium versatility without the premium price tag
🏆 Why We Didn’t Do This First
Because Bulletproof means Bulletproof.
When we launched the Isolator, we prioritized safety for the masses—fixed stop points, built-in limits, no surprises. But now that the Isolator’s proven itself, we’re giving elite users what they’ve been asking for: no-limits functionality that still offers all the built-in controls if needed.
Use it smart. Use it hard. Use it to build muscle without wasting time.
Built for Serious Load. Engineered for Extreme Attachments.
UPGRADED INTERNAL ROTATIONAL SHAFT
✅ Do You Need This Upgrade? (Read First)
If you’re planning to use your Isolator with:
• Double Weight Horn
• Adjustable Multi-Horn
• Isolator Cam Attachment
• Or any attachment pushing heavy loads beyond 275 lbs…
👉 Yes, you need this.
This upgrade is required for anyone loading more than 275 lbs or using dual-horn loading, eccentric overload, or any cam/lever-based resistance.
If you’re only using a single weight horn and keeping total load at or below 275 lbs (the original Isolator spec), your existing rotation shaft is sufficient, and no upgrade is necessary.
🔧 What’s Changed — And Why It Matters
The original Isolator came with a round rotation shaft and hex port locked in place by a single allen bolt. While this design worked well within its weight rating, all the torque and load was ultimately held by that one bolt.
The upgraded shaft features:
• Solid Hex Shaft to Hex Port Interface
→ Allows the load to be carried by metal-on-metal surface contact — not just a bolt.
• Oversized Allen Bolt
→ Adds secondary reinforcement and locks the port in with better torque resistance.
🛡️ Result: A more secure, more durable, and much higher weight-rated system for high-performance users.
🏋️♂️ Why This Upgrade Exists
At Bulletproof, we evolve based on real-world customer feedback. Many of you are pushing the limits with creative setups — ISO Arms, Dual Horns, Adjustable Horns, and the Isolator Cam. These use-cases demand a stronger core rotation system.
So instead of waiting for failure, we built this preemptive solution:
• A shaft interface that scales with your ambition
• A bolt system that won’t shear under serious torque
• And a modular upgrade that fits all existing Isolator units
🛠️ Installation & Compatibility
Installing your upgraded internal rotation shaft is quick and requires only basic tools:
Tools needed:
• Allen key
• Wrench or socket
Steps:
1. Remove a single bolt from the existing setup
2. Slide off the end hex port
3. Pull out the original shaft from the bearings
4. Slide in the upgraded hex shaft
5. Reattach the end hex port
6. Insert the new bolt and secure it with the nut
That’s it — fast, simple, and effective.
📦 Included: All necessary hardware comes with the upgrade kit.
📹 Support: We’ll include step-by-step installation instructions and a full video tutorial so you’re never left guessing.
💬 Still Not Sure If You Need It?
If you’re unsure whether your training style requires this upgrade, here’s a simple test:
• Planning to use more than 275 lbs per arm?
• Using the Double Horn, Isolator Cam, or Multi-Horn?
• Doing explosive or eccentric movements?
✅ Then you need this.
If you’re planning to use your Isolator with:
• Double Weight Horn
• Adjustable Multi-Horn
• Isolator Cam Attachment
• Or any attachment pushing heavy loads beyond 275 lbs…
👉 Yes, you need this.
This upgrade is required for anyone loading more than 275 lbs or using dual-horn loading, eccentric overload, or any cam/lever-based resistance.
If you’re only using a single weight horn and keeping total load at or below 275 lbs (the original Isolator spec), your existing rotation shaft is sufficient, and no upgrade is necessary.
The original Isolator came with a round rotation shaft and hex port locked in place by a single allen bolt. While this design worked well within its weight rating, all the torque and load was ultimately held by that one bolt.
The upgraded shaft features:
• Solid Hex Shaft to Hex Port Interface
→ Allows the load to be carried by metal-on-metal surface contact — not just a bolt.
• Oversized Allen Bolt
→ Adds secondary reinforcement and locks the port in with better torque resistance.
🛡️ Result: A more secure, more durable, and much higher weight-rated system for high-performance users.
At Bulletproof, we evolve based on real-world customer feedback. Many of you are pushing the limits with creative setups — ISO Arms, Dual Horns, Adjustable Horns, and the Isolator Cam. These use-cases demand a stronger core rotation system.
So instead of waiting for failure, we built this preemptive solution:
• A shaft interface that scales with your ambition
• A bolt system that won’t shear under serious torque
• And a modular upgrade that fits all existing Isolator units
Installing your upgraded internal rotation shaft is quick and requires only basic tools:
Tools needed:
• Allen key
• Wrench or socket
Steps:
1. Remove a single bolt from the existing setup
2. Slide off the end hex port
3. Pull out the original shaft from the bearings
4. Slide in the upgraded hex shaft
5. Reattach the end hex port
6. Insert the new bolt and secure it with the nut
That’s it — fast, simple, and effective.
📦 Included: All necessary hardware comes with the upgrade kit.
📹 Support: We’ll include step-by-step installation instructions and a full video tutorial so you’re never left guessing.
If you’re unsure whether your training style requires this upgrade, here’s a simple test:
• Planning to use more than 275 lbs per arm?
• Using the Double Horn, Isolator Cam, or Multi-Horn?
• Doing explosive or eccentric movements?
✅ Then you need this.
dimensions
FAQ
If you have any questions please feel free to contact us!
Do you ship overseas?
Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.
How long will it take to get my orders?
It depends on where you are. Orders processed here will take 5-7 business days to arrive when in stock. Overseas deliveries can take anywhere from 7-16 days when in stock. Delivery details will be provided in your confirmation email. Back order products take approximately 90 days.
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