Curl Arm Attachment

Name: Curl Arm Attachment
Brand: Bullet Proof Fitness Equipment
Rating: 4.0 (3 reviews)

The Curl Arm Attachment is a modular accessory for Bulletproof Fitness Equipment’s Isolator rack-mounted machine, engineered for biceps curls, triceps variations, pullovers, and compound rowing motions. Its triple eye-loop design accepts single handles, rope attachments, and triceps straps from one mounting location, and it rotates 360 degrees during exercises without restriction. Independent reviewers who tested it single out preacher curls as its standout use – “the pump is real” – while tricep pushdown positioning takes more experimentation to dial in. It’s an Isolator-exclusive attachment, not a standalone piece of equipment: it ships as one of the components included with the Isolator machine (all configurations, fitting 2x3 or 3x3 racks with 1”, 3/4”, 5/8”, or 11/16” holes) and cannot be used apart from it.

Length	13 1/8" (18 1/2" on attachment)
Warranty	One year structural warranty
Thickness	2 1/2"
Manufacturer	Bulletproof Fitness Equipment
Product weight	13 lbs
Compatible with	Bulletproof Isolator (all configurations)
Attachment points	Triple eye-loop (accepts single handles, rope, triceps straps)
Rack compatibility	2x3 or 3x3 rack with 1", 3/4", 5/8", or 11/16" holes
Height including hooks and rings	13"

What is a Cable Attachment?

What cable attachments are

Cable attachments are the handles and bars that clip to a cable machine, functional trainer, or lat/row station to change the exercise — lat bars, triceps ropes, single-D handles, row/close-grip handles, ankle straps, and more. A small set of them turns one cable stack into dozens of movements.

What to look for

A rotating swivel or ball-bearing joint keeps the cable from twisting and lets the handle track your arm; comfortable, durable grips (knurled metal, rubber, or coated nylon) survive heavy use; and a standard carabiner or snap fits most machines. Match the attachment to the exercises you actually train rather than buying a giant kit you won’t use.

How it compares

	Curl Arm Attachment	Double D Handle Cable Attachment	Yes4All Cable Machine Attachment, Double D Handle	BT-BAR
GymRadar rating	4.0/5	4.0/5	4.0/5	4.0/5
Price	$89.99
Length	13 1/8" (18 1/2" on attachment)
Warranty	One year structural warranty
Thickness	2 1/2"
Manufacturer	Bulletproof Fitness Equipment	Bells of Steel		Savage Strength Equipment
Product weight	13 lbs
Compatible with	Bulletproof Isolator (all configurations)
Attachment points	Triple eye-loop (accepts single handles, rope, triceps straps)
Rack compatibility	2x3 or 3x3 rack with 1", 3/4", 5/8", or 11/16" holes
Height including hooks and rings	13"

4.0/5 · 3 GymRadar reviews

Reviews by source

Expert	4.0/5	3 reviews
Youtube	4.3/5	2 reviews

Bulletproof’s Curl Arm Attachment is a modular accessory for their Isolator rack system, and independent reviewers who tested it single out preacher curls as the standout use — “the pump is real,” per Gluck’s Gym, with Garage Gym Reviews and Shredded Dad Garage Gym both calling the Isolator’s overall build quality “top notch.” Versatility is the headline strength: triple eye-loops accept single handles, rope, and triceps straps from one mounting point, covering curls, tricep work, pullovers, and rows. The weakest dimension is durability — no reviewer has put long-term wear data behind it — and value is muted by the fact this attachment can’t be used standalone; it requires the separately-purchased Isolator base.

+Functionality: Preacher curls "feel good... the pump is real" and are the standout use case (Gluck's Gym)
+Versatility: Triple eye-loop design accepts single handles, rope, and triceps straps from one mounting point (manufacturer; Shredded Dad Garage Gym)
+Build quality: "The quality on all parts of the Isolator is top notch" (Shredded Dad Garage Gym)
+Functionality: Rotates 360 degrees without restriction across exercises (Shredded Dad Garage Gym)

−Value: Requires the separately-purchased Isolator base system — can't be used standalone (manufacturer)
−Functionality: Tricep pushdown positioning and range of motion require experimentation and don't always feel dialed-in (Garage Gym Reviews; Shredded Dad Garage Gym)
−Durability: No long-term wear data yet from independent reviewers

$89.99

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