The Lock-N-Float Center Mount Lever Arm: Leg & Arm Developer
With the dual cams and telescoping tube attachment the new arm can be setup for seated leg curls, prone leg curls, preacher curls, and pretty much anything else the other lever arm can!
Own the ISOLATOR with one short pad already? Pick Single Pad to match it—or Pair to get two fresh pads.
Presale Discount Automatically Applied At Checkout!
Order early to secure the best deal — prices increase as the presale progresses!
Tier 1 – Early Bird | September 1 - September 14 |🔥 Lowest Price – Limited Quantity
⚠️ PRESALE INFO – READ BEFORE ORDERING
PRESALE FOR THIS PRODUCT ENDS 9/14/25
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
Where balance, rigidity, and innovation collide.
You’ve seen leg developers before. You’ve seen preacher curl stations before. But you’ve never seen one like this. The Center Mount Isolator Leg & Arm Developer is not just another bolt-on — it’s a full rethink of how to train legs and arms with perfect balance, maximum rigidity, and a feature no other unit offers: Lock-N-Float.
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 THIS ATTACHMENT STANDS OUT
• Rock-Solid, Center-Mounted: Hate when the pad tips or shifts under load? This unit plants itself dead center, giving you a perfectly balanced, even load whether you’re hammering out leg extensions, curls, or preacher curls.
• Lock-N-Float Technology: Pull the spring pop pin and unlock the pads so they can float independently. Suddenly it’s on YOU to keep the load balanced — if one side lags, you’ll see it instantly. It’s the middle ground between iso-lateral training and traditional fixed pads, forcing both limbs to pull their weight equally.
• Two Modes, One Attachment: Lock it in for rigid, fixed, commercial-gym solidity. Or pop the pin and unleash floating chaos that builds symmetry, balance, and total limb honesty.
• Self-Correcting Under Load: Even if there’s ever the slightest deflection, floating mode means you’re in control — not the steel. You balance it, you stabilize it, you build more real-world strength.
FEATURES AND COMPATIBILITY
• Hex Port System: Uses the same hex ports as your existing Isolator pads. Just add one more of our standard short roller pads and you’re set.
• Dual-Cam Design: Standard cam at the top of the lever arm, plus a secondary cam at the middle stem for smooth 360° rotation.
• Telescoping Stem: Adjust depth and setup with ease, opening up a huge range of configurations for both leg and arm movements.
• Commercial Feel, Home-Gym Footprint: Built with Bulletproof steel and over-engineered welds — no flex, no wobble, no compromise.
WHO IT'S FOR
• Lifters obsessed with perfectly even resistance across limbs.
• Athletes chasing both rigidity AND balance training in one tool.
• The type of person who loves discovering a feature no other attachment offers — and immediately builds an entire training block around it.
THE BULLETPROOF EDGE
At Bulletproof, we don’t just copy old machines. We engineer attachments that solve problems, add options, and make training feel better. The Center Mount Isolator Leg & Arm Developer is proof: rock-solid when you want it, free-floating when you don’t, and always giving you more ways to train than anything else in your arsenal.
BOTTOM LINE
🔥 Bottom line: With Lock-N-Float, this attachment lets you choose — locked-in rigidity or free-floating chaos. Train harder, train smarter, and finally train perfectly balanced.
• Rock-Solid, Center-Mounted: Hate when the pad tips or shifts under load? This unit plants itself dead center, giving you a perfectly balanced, even load whether you’re hammering out leg extensions, curls, or preacher curls.
• Lock-N-Float Technology: Pull the spring pop pin and unlock the pads so they can float independently. Suddenly it’s on YOU to keep the load balanced — if one side lags, you’ll see it instantly. It’s the middle ground between iso-lateral training and traditional fixed pads, forcing both limbs to pull their weight equally.
• Two Modes, One Attachment: Lock it in for rigid, fixed, commercial-gym solidity. Or pop the pin and unleash floating chaos that builds symmetry, balance, and total limb honesty.
• Self-Correcting Under Load: Even if there’s ever the slightest deflection, floating mode means you’re in control — not the steel. You balance it, you stabilize it, you build more real-world strength.
• Hex Port System: Uses the same hex ports as your existing Isolator pads. Just add one more of our standard short roller pads and you’re set.
• Dual-Cam Design: Standard cam at the top of the lever arm, plus a secondary cam at the middle stem for smooth 360° rotation.
• Telescoping Stem: Adjust depth and setup with ease, opening up a huge range of configurations for both leg and arm movements.
• Commercial Feel, Home-Gym Footprint: Built with Bulletproof steel and over-engineered welds — no flex, no wobble, no compromise.
• Lifters obsessed with perfectly even resistance across limbs.
• Athletes chasing both rigidity AND balance training in one tool.
• The type of person who loves discovering a feature no other attachment offers — and immediately builds an entire training block around it.
At Bulletproof, we don’t just copy old machines. We engineer attachments that solve problems, add options, and make training feel better. The Center Mount Isolator Leg & Arm Developer is proof: rock-solid when you want it, free-floating when you don’t, and always giving you more ways to train than anything else in your arsenal.
🔥 Bottom line: With Lock-N-Float, this attachment lets you choose — locked-in rigidity or free-floating chaos. Train harder, train smarter, and finally train perfectly balanced.
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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