Altra Archery .204 Centrum Insert/Outsert 12 Pack

Engineered for serious archers who demand strength, consistency, and precision, the Altra Archery .204 Centrum Insert/Outsert 12 Pack features the innovative Altra Reinforced Concentric Outsert System (A.R.C.O.S.). Designed specifically for Altra .204 arrow shafts, this premium insert/outsert system combines deep insert engagement with reinforced front-end protection to maximize durability and improve downrange performance. Precision machined from high-strength 7075-T6 aluminum, ARCOS delivers exceptional concentricity and reliability for hunting and target archery applications.

Key Features

• Designed specifically for Altra .204 arrow shafts
• Advanced A.R.C.O.S. (Altra Reinforced Concentric Outsert System)
• Precision machined from 7075-T6 aluminum
• Deep insert engagement for superior strength
• Thread-on outsert reinforces the front of the shaft
• Pre-installed O-rings help reduce vibration
• Improves insert-to-outsert concentricity
• Built for enhanced durability and accuracy

Advanced Front-End Protection

The ARCOS system is designed to create a stronger and more precise arrow build by combining the advantages of both an insert and an outsert. The insert extends 0.875 inches into the shaft for secure engagement, while the threaded outsert encapsulates 0.43 inches of the shaft's leading edge to help protect against impacts and improve structural integrity.

Integrated rubber O-rings come pre-installed and help secure the outsert in place while minimizing vibration. This design also improves concentric alignment between the insert and outsert, creating a more consistent arrow setup for improved flight characteristics and downrange accuracy.

Manufactured from premium 7075-T6 aluminum, the ARCOS system offers exceptional strength while maintaining the precise tolerances required for elite arrow performance.

Quick Specs

• Brand: Altra Archery
• Product: Centrum Insert/Outsert
• System: A.R.C.O.S. (Altra Reinforced Concentric Outsert System)
• Quantity: 12 Pack
• Material: 7075-T6 Aluminum
• Total Weight: 53 Grains
• Arrow Compatibility: Altra .204 Shafts
• Insert Weight Compatibility: Accepts Non-Micro FMS Insert Weights

Available Spine Options

• 250 Spine
• 300 Spine
• 350 Spine
• 400 Spine
• 500 Spine

Works With

• Altra .204 arrow shafts
• Non-micro FMS insert weights
• Fixed blade broadheads
• Mechanical broadheads
• Hunting arrow builds
• Target archery arrows
• High-performance arrow setups
• Precision arrow tuning systems

Best For

• Building durable hunting arrows
• Improving front-end shaft protection
• Increasing arrow concentricity
• Enhancing downrange accuracy
• Broadhead arrow setups
• Long-range shooting applications
• Target archery
• Bowhunting performance

Frequently Asked Questions

What shafts are compatible with this ARCOS system?

This insert/outsert system is designed specifically for Altra .204 arrow shafts.

What material is the ARCOS system made from?

The insert and outsert components are precision machined from premium 7075-T6 aluminum for maximum durability and performance.

How much does the insert/outsert system weigh?

The complete ARCOS insert/outsert system weighs 53 grains.

What do the included O-rings do?

The pre-installed O-rings help secure the outsert, reduce vibration, and improve concentricity between the insert and outsert components.

What type of target should be used with ARCOS-equipped arrows?

Altra Archery recommends using foam-style targets. Bag-style targets may cause the outsert to become lodged in filler material, potentially damaging the arrow or insert/outsert assembly.

Built for Accuracy. Designed for Durability.

Whether you're building premium hunting arrows or optimizing a target setup, the Altra Archery .204 Centrum Insert/Outsert 12 Pack delivers the durability, alignment, and precision required for consistent performance shot after shot.