The Primal Performance Series Plate Loaded Bicep Curl is an iso-lateral arm machine that lets each side curl independently, built for commercial gyms, PT studios and strength facilities. It loads with standard 50 mm Olympic plates on two 150 kg bullhorns, takes up 1220 × 1125 mm of floor space and stands 1200 mm tall.

Because each arm works on its own lever, a stronger side cannot take over. Adjustable lever start positions and an angled elbow pad turn one machine into several preacher and Scott curl variations, so members get more than one curl from a single footprint.

Who it is for

• Commercial gyms adding a dedicated arm station to a plate loaded line
• PT studios that coach bodybuilding and physique clients on arm isolation
• Strength and conditioning facilities that want unilateral work to fix left to right imbalances
• Hypertrophy focused members who want a supported curl without cheating the weight up

Key features

• Independent lever arms so each bicep works on its own and imbalances show up straight away
• Adjustable lever start angle that, paired with the angle adjustable elbow pad, sets up multiple preacher and Scott curl variations
• 4 elbow pad positions to change the angle the biceps are loaded from
• Height adjustable seat to line the elbow up with the lever's pivot point
• Semi-supinated hinged handles on a swing arm that lengthen and shorten the lever through each rep, easing strain on the wrists and hands while keeping tension on the biceps
• Two 275 mm bullhorns rated to 150 kg each, for a 300 kg total loading capacity
• 3 mm steel frame built from 50 × 100 mm main tubing for full commercial use

Muscles worked and training uses

A supported, single arm curl strips out body swing, so the elbow flexors do all the work from full stretch to full squeeze.

• Primary: biceps brachii
• Secondary: brachialis, brachioradialis and forearm flexors
• Unilateral arm work to even out a weaker side
• Preacher style hypertrophy sets in the 10 to 15 rep range, with lever angle changes to vary the stretch
• Finishers at the end of pull or upper body sessions

Specifications

Frequently asked questions

How much room does the Primal Bicep Curl take up?

It measures 1220 mm long, 1125 mm wide and 1200 mm high. Leave about 600 mm clear on every side for plate loading and getting in and out of the seat, which gives a working zone of roughly 2.4 × 2.3 m.

How is the machine loaded?

It is plate loaded. Each arm has its own 275 mm bullhorn that takes 50 mm Olympic plates, rated to 150 kg per side. Plates are not included.

What ceiling height does it need?

At 1200 mm tall, with the curl happening in front of the body rather than overhead, it sits comfortably under any standard ceiling.

What is the warranty?

Primal Strength covers it for full commercial use: 5 years on the frame, 3 years on parts, and 1 year on pads, cables, pulleys and wearables, with 1 year of labour.

Do you deliver and install in Australia?

Yes. We ship Australia-wide from our Melbourne warehouse, and most metro orders arrive 1 to 7 business days after dispatch. Packed, it weighs 216 kg, so some regional addresses need a freight quote. Send us your details through the Ask about this machine form on this page for a delivery and installation quote.

Can I do preacher curls on it?

Yes. The lever start position and elbow pad angle both adjust, so you can set up several preacher and Scott curl variations as well as a more upright curl.

What is the heaviest user it takes?

Primal rates it for users up to 200 kg.

Building an arm and upper body corner? Pair the Bicep Curl with other Primal Performance Series plate loaded machines for a matched line.