Spotter Arms Rack Attachment

Name: Spotter Arms Rack Attachment
Brand: Bells of Steel
Rating: 4.33 (5 reviews)

Bells of Steel’s Spotter Arms are a pair of rack-mounted safety catches for bench press and squat, sold in three versions matched to rack generation – 60mm (fits 2.3” x 2.3” uprights, 5/8” holes, 800 lb capacity), Hydra (true 3” x 3” uprights, 5/8” holes, 1,000 lb capacity), and Manticore (true 3” x 3” uprights, 1” holes, 1,000 lb capacity) – and compatible with non-Bells of Steel racks that share the matching upright and hole spec. Each arm is lined with UHMW on both the front and back, so a caught bar never contacts bare metal, and magnetic hitch pins with linchpins lock the arms in place. An independent reviewer (Canadian Steve’s Underground Gym) rated them ahead of both Rogue’s and REP’s equivalents on this same double-sided UHMW lining and the magnetic-pin anchor point, and the manufacturer’s own 810 lb / 2.5 ft drop test showed the arms holding a barbell secure through a catastrophic failed rep, though the arms and bar themselves bent and needed replacing after that one extreme hit. Beyond squat/bench safety, they double as a secondary station for incline presses or other lifts done outside the rack. The one tradeoff worth knowing: at roughly 12” of clearance they take up about twice the space of slimmer competitors like Stealth’s spotter arms.

Included	Pair of spotter arms, 2 hitch pins with cotter pins (magnetic anchor)
Material	Heavy-duty steel construction, UHMW lining on both the front and back of each arm
Footprint	Approx. 12" of clearance when mounted
Manufacturer	Bells of Steel
Compatibility	Fits Bells of Steel racks and non-Bells of Steel racks with matching upright size and hole spec (e.g. Rogue Monster-style 3" x 3" racks for the Manticore version)
Weight capacity	800 lb / 362 kg (60mm version); 1,000 lb / 453 kg (Hydra & Manticore versions)
Compatible uprights	2.3" x 2.3" w/ 5/8" holes (60mm version); true 3" x 3" w/ 5/8" holes (Hydra version); true 3" x 3" w/ 1" holes (Manticore version)

What is a Rack Attachment?

What rack attachments are

Rack attachments bolt or pin onto a power rack or squat stand to expand what it can do — J-cups and safety arms/straps (the essentials), plus dip bars, a landmine, a lat pulldown, weight-plate storage, roller J-cups, and more. They turn a rack into a whole gym.

Compatibility comes first

An attachment must match your rack’s upright size (2x2, 2x3, or 3x3) and hole pattern/hardware (e.g. 5/8-in vs 1-in holes, Westside spacing). Attachments are usually series-specific — a Monster Lite J-cup won’t fit an Echo upright — so confirm the fit before buying.

How it compares

	Spotter Arms Rack Attachment	Monster Matador	Fat Grip Parallel Landmine Handle	Stealth Spotters
GymRadar rating	4.33/5	4.33/5	4.33/5	4.33/5
Price		$195.00	$64.97	$550.00
Included	Pair of spotter arms, 2 hitch pins with cotter pins (magnetic anchor)
Material	Heavy-duty steel construction, UHMW lining on both the front and back of each arm		0.25" steel, seamless tube construction	hand-welded American steel; 3/8" mounting channel, 1/4" laser-cut vertical face
Footprint	Approx. 12" of clearance when mounted
Manufacturer	Bells of Steel		Titan Fitness
Compatibility	Fits Bells of Steel racks and non-Bells of Steel racks with matching upright size and hole spec (e.g. Rogue Monster-style 3" x 3" racks for the Manticore version)
Weight capacity	800 lb / 362 kg (60mm version); 1,000 lb / 453 kg (Hydra & Manticore versions)
Compatible uprights	2.3" x 2.3" w/ 5/8" holes (60mm version); true 3" x 3" w/ 5/8" holes (Hydra version); true 3" x 3" w/ 1" holes (Manticore version)

4.3/5 · 5 GymRadar reviews

Reviews by source

Expert	4.33/5	5 reviews
Retailer	4.9/5	105 reviews
Youtube	4.7/5	1 reviews

Bells of Steel’s spotter arms are a straightforward, well-executed safety attachment: a pair of UHMW-lined arms that catch a failed bench or squat rep and double as a secondary station for incline presses and other lifts outside the rack. Build quality is the standout — UHMW lines both the front and back of each arm (no metal-on-metal contact with the bar), and magnetic hitch pins lock them securely in place, details an independent reviewer called out as beating both Rogue’s and REP’s equivalents. Durability held up under an extreme 810 lb / 2.5 ft drop test: the arms stayed secured and kept the barbell (and a phone) safe, though the bent arms and barbell from that single test show the hardware isn’t meant to absorb a catastrophic load twice. The weakest dimension is versatility of footprint — at roughly 12” of clearance they take up about twice the space of slimmer competitors like Stealth’s spotters, worth knowing if rack space is tight.

+Build quality: UHMW lining on both the front and back of each arm eliminates metal-on-metal contact with the bar (Canadian Steve's Underground Gym)
+Build quality: magnetic hitch pins hold the arms securely in place, a detail the reviewer preferred over REP's spotter arms, which have no anchor point (Canadian Steve's Underground Gym)
+Durability: held a barbell secure through an 810 lb / 2.5 ft drop test without the rack or spotter arms failing, though the arms themselves bent and needed replacing after that single extreme hit (Bells of Steel drop test video)
+Functionality: useful outside the rack too, e.g. for incline presses or other lifts where a spotter isn't available (Canadian Steve's Underground Gym)
+Value: called out as beating both Rogue's (pricier) and REP's (fewer features) equivalents on a like-for-like comparison (Canadian Steve's Underground Gym)

−Versatility: at about 12" of clearance, they take up roughly twice the space of slimmer competitors like Stealth's spotter arms (manufacturer product page)
−Durability: the 810 lb drop test bent both the spotter arms and the barbell, meaning they protected the lifter but weren't reusable after that single catastrophic load (Bells of Steel drop test video)
−Coverage: independent write-ups are thin — one YouTube review and no Reddit/community threads were found to corroborate long-term wear
−Compatibility: sized per rack generation (60mm/Hydra/Manticore), so a wrong-version pick won't fit a different upright/hole spec (manufacturer product page)