BodyKore GR634 Bicep/Tricep

Bicep and Tricep Machine: GR634

If arm day is elbow drama and sloppy reps, the fix is a bicep and tricep machine that keeps the path clean and the setup consistent. Equipped with a 220 lb weight stack, this machine can really help build your arm muscles. The BodyKore Isolation Series Bicep/Tricep Combo Machine (GR634) is positioned at a 30° angle for precise biomechanical movement, and its intelligent dual-function design lets you hit biceps and/or triceps with a simple rotating arm to change the movements.

Why it works

Direct answer: Stable posture + guided resistance = cleaner reps, faster progression.

Machines and free weights can both build size and strength; the advantage here is repeatability when you’re pushing hard near fatigue.

Switch biceps ↔ triceps fast

Direct answer: Rotate the arm, keep your seat setting, keep training.

• Allows performance of biceps and triceps exercises in one machine
• Rotating arm switches movements in seconds
• Equipped with a 220lb weight stack; upgradeable to 340 lbs

Adjustability that matters

Direct answer: The GR634 helps you match limb length, comfort, and training focus with ROM, grip, and support.

Range-of-motion control

Feature callout: 3 ranges of motion adjustments for both bicep/triceps exercises.

You get 3 range-of-motion adjustments for both bicep/triceps exercises—use them to standardize setup across users or tailor start/end ranges for comfort and intent.

And because it’s the “secret sauce” for real-world coaching, 3 range-of-motion adjustments for both bicep/triceps exercises help you keep form strict even when the room is busy.

Multi-grip handles

The 3-position multi-grip handles reduce torque and provide continuous resistance around a natural arc, giving you practical grip options without changing the machine’s feel.

Seat + support

The 6-position adjustable seat with back support gives users a comfortable, stable platform to help isolate movement. Plus a cup/phone/key holder so users stay on station.

Key features

✅ Biceps + triceps in one station
✅ Rotating arm = fast switching
✅ 30° biomechanical working angle
✅ 220lb selectorized stack
✅ Upgrade stack to 340 lbs
✅ 3 ROM adjustments (bi/tri)
✅ 6-position seat + back support
✅ 3-position multi-grip handles
✅ Cup/Phone/Key Holder
✅ Commercial grade; rated over lbs

Specifications

Direct answer: Compact footprint, commercial build, serious stack.

• Dimensions: 42"x48"x65"
• Weight: 513 lbs
• Footprint: 16 sq ft
• Frame: Rolled Steel Oval Tubing
• Frame Color: Black or Silver
• Weight Stack: 220 lbs; upgradeable to 340 lbs.

Planning note: Some manufacturer materials list the dimensions as 48" x 42" x 65" and weight around 459 lb depending on configuration.

Warranty (North America only)

Direct answer: Long coverage on the wear systems, plus lifetime frame coverage (frame only—coatings excluded).

• FRAME (Not Coatings): Lifetime
• WEIGHT STACKS: 10 Years
• PULLEYS: 10 Years
• PIVOT BEARINGS: 10 Years
• OTHER ITEMS NOT SPECIFIED: 3 Years
• UPHOLSTERY/CABLES, SPRINGS/GRIPS: 1 Year
• ACCESSORIES: 6 Months

Who it’s for

Direct answer: Homes, studios, teams, and full facilities—especially when you need a repeatable setup across many users.

Home Fitness Enthusiasts; Commercial Fitness Facilities; Fitness Professionals and Trainers; Socially Conscious Consumers; Individuals Seeking Personalized Fitness Solutions; Health and Wellness Enthusiasts; Corporate Wellness Programs; Luxury Fitness Equipment Shoppers; Consumers Seeking Equipment for Rehabilitation or Recovery; Budget-Conscious Buyers; Fitness Influencers and Bloggers; Small Gym and Studio Owners; Sports Teams and Athletic Programs; Faith-Based Consumers; Environmental-Conscious Consumers; Young Professionals and Millennials; Retirees and Seniors; Families and Parents; Eco-Conscious Fitness Enthusiasts; Fitness Hobbyists and Weekend Warriors.

Setup, safety, upkeep

Direct answer: Space + stability + routine checks = safer training and less downtime.

BodyKore’s manual advises planning clear operating space (a common rule is about a 4-foot circle around the user) and placing the unit at least 40 inches (1 meter) from walls/objects on all sides. The unit is freestanding and can be bolted down for extra stability.

Keep it looking and moving like new:

• Clean frames with mild soap/water; dry completely.
• Avoid harsh chemicals on upholstery (skip solvents/alcohol/ammonia).
• Inspect fasteners, cables, and movement arms on schedule; remove from service at first signs of damage.

Download docs

Need the exact steps?

• Download Manual
• Download Datasheet

People Also Ask

Is a bicep and tricep machine worth buying?
Yes—if you want consistent mechanics, quick switching, and safer intensity when fatigue hits.

How do I switch biceps to triceps on the GR634?
Rotate the arm to change movements, then adjust seat height and ROM to match your elbow line.

What weight stack comes with it?
A 220 lb weight stack, with an option to upgrade to 340 lbs.

How much space do I need around it?
Plan clearance around the user (about a 4-foot circle is a common rule) and keep it 40 inches from walls/objects.

Tennessee HQ ships nationwide

Direct answer: Based in Tennessee with nationwide service and shipping, we make it easy to upgrade arms anywhere in the USA.

If you want a premium station that makes every rep look—and feel—intentional, get the GR634 now through Hamilton Home Fitness and put your next arm cycle on rails. Click order, schedule delivery, and start training the day it lands.