Spirit Fitness SP-4308 Triceps Extension

Product Overview

The Spirit Fitness SP-4308 Triceps Extension is a precision-engineered strength machine designed to isolate and strengthen the triceps with maximum efficiency and control. Built around a seated, guided movement pattern, it minimizes shoulder involvement while promoting proper elbow alignment for targeted muscle activation. With its ergonomic design, smooth resistance system, and compact commercial footprint, the SP-4308 delivers consistent performance, comfort, and durability—making it a valuable addition to any professional training environment.

PIN: SP-4308

Key Features

• Focused Triceps Isolation
  Angled arm pad limits shoulder movement, ensuring maximum emphasis on triceps engagement.
• Pivoting Extension Bar
  Automatically adjusts to different forearm lengths, maintaining proper alignment with the machine’s axis of rotation.
• Adjustable Seat Positioning
  Allows precise elbow alignment for optimal biomechanics and user comfort.
• Smooth Cable-Driven Resistance
  Provides fluid, consistent motion throughout the full range of extension.
• Integrated Rep Counter & Storage
  Tracks performance and offers convenient top-cap storage for personal items.
• Compact Commercial Design
  Space-efficient footprint ideal for strength circuits and high-traffic gym environments.
• Heavy-Duty Construction
  Built with a robust steel frame and premium upholstery for long-term durability.

Specifications

Performance

• Exercise Type: Seated triceps extension
• Resistance System: Selectorized weight stack
• Weight Stack: 110 kg / 240 lb (varies by configuration)
• Increment: 5 lb (2.2 kg) increments
• Pulley Ratio: Approx. 0.7
• Movement: Cable-driven system for smooth, controlled resistance
• Target Muscles: Triceps, with secondary stabilization from shoulders and forearms 

Design & Build

• Frame: Heavy-duty commercial-grade steel
• Finish: Electrostatic powder-coated, corrosion-resistant surface
• Arm Pad: Angled design for improved isolation and support
• Seat: Adjustable height for proper alignment
• Handles: Pivoting extension bar for ergonomic positioning
• Padding: High-density foam with durable upholstery
• Convenience Features: Rep counter, storage tray, enclosed weight stack 

Dimensions & Capacity

• Dimensions (L × W × H): 1245 × 1020 × 1500 mm (49" × 40" × 59")
• Machine Weight: 203 – 218 kg (448 – 480 lb)
• Weight Stack: 82 – 110 kg (180 – 240 lb, configuration dependent)
• Maximum User Weight: Approx. 163 – 180 kg (360 lb range)