Built for Strength. Designed for Professionals.

The Skelcore Trinity Calf Extension Pin Load is a premium, Commercial-grade selectorized strength machine engineered for facilities demanding consistent performance and reliability. Built to endure high daily traffic in professional gyms, studios, and performance centers, it delivers biomechanical precision and superior comfort in a compact, durable frame. Designed with modern aesthetics and intelligent ergonomics, it empowers members to build powerful lower legs with confidence and control.

What It Is & Who It's For

The Skelcore Trinity Calf Extension is a selectorized lower-body training machine designed to isolate and strengthen the calf muscles through seated or plantar flexion movements. Featuring a smooth aluminum pulley system and a 220 lb. (100 kg.) weight stack, it provides progressive resistance ideal for both beginners and advanced athletes. This Commercial calf machine is perfect for gyms, athletic performance facilities, and PT studios seeking durable, low-maintenance equipment that supports hypertrophy, strength training, and rehabilitation Programming. Whether in a selectorized circuit zone or a specialized strength bay, it ensures safe, consistent, and repeatable movement patterns for optimized calf development.

Key Features

• 220 lb. (100 kg.) weight stack — Offers scalable resistance for all fitness levels, enabling structured progression and member confidence.
• Adjustable seat with PU upholstery — Multi-layer foam padding ensures ergonomic comfort and consistent support during heavy sessions.
• Steel front shroud with laser-cut Skelcore logos — Enhances durability and visual uniformity across your facility’s strength line.
• Aluminum pulleys — Provide smooth, quiet operation for a premium user experience and reduced wear on cables.
• Pop-pin adjustment mechanism — Enables fast seat positioning to accommodate different user heights and training angles.

Primary Exercises & Use Cases

• Seated Calf Raises — Target the gastrocnemius and soleus for balanced calf strength and definition.
• Progressive Resistance Training — Support hypertrophy and endurance through incremental load adjustments.
• Rehabilitation & Mobility Work — Controlled range of motion ideal for lower-leg conditioning and recovery programs.
• PT and Small Group Training — Efficient machine for rotation in personal training pods and lower-body circuits.

Benefits for Gym Owners

• Member safety & confidence: Controlled movement path and stable seat design minimize injury risk while improving training precision.
• Space efficiency: Compact footprint (61.81 × 43.70 × 60.63 in) integrates easily into selectorized machine circuits or smaller PT bays.
• Durability: Commercial-grade steel frame, reinforced cables, and precision pulleys built for daily high-volume use.
• Low maintenance: Aluminum pulleys and sealed bearings extend service life and reduce upkeep costs.
• Revenue impact: Adds value to membership offerings through premium equipment options and professional aesthetics that attract retention and upgrades.

Technical Specifications

• Set-Up Size (in. / mm): 61.81 × 43.70 × 60.63 in. / 1570 × 1110 × 1540 mm
• Padded Material: PU upholstery with multi-layer foam
• Max User Weight ( lb. / kg.): 330.69 lb. / 150 kg.
• Load Weight / Weight Stack: 220 lb. / 100 kg.
• Max Total Load Weight: 286 lb. / 130 kg.
• Steel Front Shroud: With laser-cut Skelcore icon logos
• Adjustment Type: Pop-pin adjustment
• Pulley System: Aluminum pulleys for smooth movement

Placement & Programming Tips

• Recommended Zones: Selectorized Machine Circuit Zone, Strength Training Zone, PT / Small Group Training Bay
• Suggested Pairings: Adjustable benches, dumbbells, plyo boxes, flooring/turf systems, and strength accessories
• Programming Hooks: Beginner onboarding, hypertrophy and bodybuilding programs, PT one-on-one coaching, circuit training blocks, and sports performance conditioning

Care & Maintenance

• Wipe down upholstery and steel surfaces daily with non-abrasive disinfectant to maintain professional appearance.
• Inspect pop-pin adjustments, cables, and pulleys weekly for signs of wear or loosening; lubricate moving parts quarterly for optimal performance.

Warranty & Support

All Skelcore Commercial equipment is backed by dedicated support and a limited Commercial warranty covering structural integrity and key moving components. Facility owners benefit from responsive customer service and professional after-sales assistance for installation and maintenance guidance.

Why Skelcore

Skelcore is committed to precision engineering, advanced biomechanics, and uncompromising build quality. Every machine is crafted for long-term Commercial performance, trusted by gym owners, trainers, and athletes worldwide for its sleek design and proven reliability.

Ready to Equip Your Floor?

Enhance your facility’s strength lineup with the Skelcore Trinity Calf Extension Pin Load. Add to your quote today or connect with our Commercial sales team to outfit your gym, upgrade your selectorized circuit, or complete your lower-body training zone with confidence.

Skelcore: Designed for Professionals. Trusted by Athletes.