Vendetta 180° Adapters for BOS Sliding Lever Arms
Vendetta 180° Adapters for BOS Sliding Lever Arms
Vendetta 180° Adapters for BOS Sliding Lever Arms
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Vendetta 180° Adapters for BOS Sliding Lever Arms

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***Patent Pending***


These are ONLY COMPATIBLE with the

BOS Lever Arms with sliding adjustable trolley

mounts shown.


3x3 Lever Arm tubes, trolley, upright, and hitch pins NOT included

You must already own or purchase the trolley and arms separately from the respective company



Add even more versatility and fine adjustability to your BOS Hydra Sliding Lever arms with our 180-degree bolt-on adapter mounts!

Our bolt-on adapters are designed to attach seamlessly onto your existing lever arm mount and instantly add 15 new positions to set the absolutely perfect angle for your exercises for exercises such as flat presses, incline presses, decline presses, hammer presses, shoulder presses, rows, calf raises, leg curls, leg extensions, various squats, hip thrusts, and several other exercises. 

Additionally,  a cut-out is provided so the original 9 holes are still open and capable of locking the arm into position.



Due to the hole spacing on the BOS lever arm tube the bolt-on adapter kit holes will not line up with the holes in the lever arm and are not capable of aligning the holes in the lever arm tube with the side plate holes for locking out the arms into a fixed position. However the original 9 holes are still capable of doing this. The holes on the adapter kit are used only for setting the starting angle of the arm. Unfortunately, we could not line up the holes without an extremely oversized and obnoxiously large diameter plate. 



  • 180° degrees of adjustability
  • Adds 15 equally spaced adjustable positions
  • Seamlessly attaches onto the existing mount with the included hardware
  • CNC laser-cut steel side plates
  • Matching Black Powder Coat



  • Complete kit for a set of lever arms (1 adapter kit per side, 2 total)
  • Side plates
  • Striker plates
  • High Strength replacement hardware
  • QR code assembly instructions

NOT Included

  • Hitch Pins NOT included (minimum 5" usable shaft length required)
  • Lever arms and trolleys NOT included, bolt-on adapter mounts only


    These adapters use a 5/8" hitch pin as the adjusting pin (not included)

    You will NEED two 5/8" hitch pins that are a minimum 5" long for these mounts.



  • NEVER use for dropped weights or as a dynamic spotter arm/device! Damage to your squat rack upright will occur from dropping weight. The adjusting pin and brackets are ONLY meant for supporting static loads and controlled stops at the end of a repetition.
  • DO NOT exceed 250 lbs static load per individual arm for 36" arms when supported by the adjusting pin. When the adjusting pin is not in use, the load rating is the same as the original manufacturer’s specs. Failure to follow this will result in a damaged lever arm tube.
  • ONLY use this attachment on squat racks that are properly anchored to the floor or wall per the original manufacturer's instructions as tipping due to the extended loads can occur. Similar to spotter arms when used outside the rack.
  • ALWAYS use an additional hitch pin inserted laterally through both sides of the original bracket and the squat rack upright post thus acting as a locking cross pin. This allows the additional forces from the extended arms to be supported by the inserted hitch pin and not the roller bolts.
  • NOT recommended for commercial facilities or applications

Failure to acknowledge any of these warnings can result in serious injury. By purchasing this product and checking the consent box during checkout you acknowledge that you have read, understand, and agree that Vendetta Strength and Athletics is not liable in any way for any damage, personal injury, or injury caused by the use or misuse of this product. As always, please exercise safely and responsibly.

By purchasing, the user(s) acknowledges and agrees to follow these warnings and to use them responsibly. Vendetta Strength and Athletics is not responsible for any damage as a result of improper use or failure to follow any/all warnings given.



Vendetta Strength & Athletics is an independent company and has no affiliation with any other company in any manner.

This product is designed to be compatible with the Bells of Steel Hydra Sliding Lever Arms. Bells of Steel is not affiliated with Vendetta Strength & Athletics and has not approved any Vendetta Strength and Athletics products for use with Bell of Steel’s products.

Vendetta Strength is not affiliated, associated, endorsed by, or in any way officially connected with Bells of Steel or with any other company mentioned that is the registered trademark owner of the product name, logo, brand, and/or other registered trademarks depicted or referred to within. Any reference to them is strictly for descriptive and nominative identification purposes only.


We strive to design products that will last forever, but parts inevitably wear out over time and heavy use. This is why all of our parts and components (i.e. rollers, brackets, hardware, etc.) are covered by our lifetime structural warranty. As long as we're in business, your product will be supported. We are committed to standing by our products and customers for the long haul.


PROUDLY BUILT IN AMERICA (Chattanooga, Tennessee) by a small family business

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