Spirit Fitness SP-4607 Biceps Curl / Triceps Extension

Product Overview

The Spirit Fitness SP-4607 Biceps Curl / Triceps Extension is a dual-function commercial strength machine engineered to deliver efficient upper-arm training in a single, space-saving footprint. By combining opposing muscle exercises—biceps curls and triceps extensions—it allows balanced arm development while maximizing floor efficiency. Designed with precise biomechanics, adjustable functionality, and smooth resistance, the SP-4607 ensures controlled, effective performance in high-traffic fitness environments.

PIN: SP-4607

Key Features

• Dual-Function Arm Training
  Combines biceps curl and triceps extension in one machine for balanced upper-arm development and efficient use of space.
• Quick Cam Adjustment System
  Easily switch between exercises using an adjustable cam mechanism without repositioning the user.
• Angled Arm Pad for Isolation
  Minimizes shoulder involvement to maximize targeted activation of biceps and triceps.
• Pivoting Arm & Optimized Axis of Rotation
  Adapts to different forearm lengths, ensuring proper alignment and natural movement feel.
• Stability-Focused Design
  Small back pad enhances support and stability during triceps extension movements.
• Smooth Cable-Driven Resistance
  Provides fluid, consistent motion for controlled and safe repetitions.
• Integrated Rep Counter & Storage
  Tracks performance and includes top-cap storage for convenience during workouts.
• Commercial-Grade Construction
  Heavy-duty steel frame with durable powder coating ensures long-term reliability.

Specifications

Performance

• Exercise Type: Biceps curl & triceps extension
• Resistance System: Selectorized weight stack
• Weight Stack: 100 kg / 220 lb
• Increment: 5 lb (2.2 kg) increments
• Movement: Cable-driven dual-function system
• Target Muscles: Biceps, triceps, and supporting arm stabilizers

Design & Build

• Frame: Heavy-duty commercial-grade steel
• Finish: Electrostatic powder-coated, corrosion-resistant surface
• Arm Pad: Angled design for improved muscle isolation
• Mechanics: Cam-based switching system with pivoting arm alignment
• Seat: Adjustable for proper elbow positioning and biomechanics
• Cushioning: High-density foam with premium upholstery
• Convenience Features: Rep counter, storage tray, enclosed weight stack 

Dimensions & Capacity

• Dimensions (L × W × H): 1115 × 1310 × 1580 mm (44" × 52" × 62")
• Machine Weight: 182 kg / 401 lb
• Weight Stack: 100 kg / 220 lb
• Maximum User Weight: Approx. 180 kg / 397 lb
• Footprint: Compact dual-station design ideal for commercial facilities