Prestacycle System 500 Aero Pack - Complete System

A new approach to saddle storage
System 500 replaces traditional hanging saddle bags with a rigid aero‑shaped pack that sits cleanly behind the rider, reducing drag and improving stability.

500 mL enclosed storage
Enough space for inflation tools, tire‑repair supplies, compact tools and small ride essentials.
Maximum recommended cargo weight: 500 g.

Radar integration (not radar competition)
Choose an interchangeable Aero Pack Door for your compatible radar and mount it directly at the rear of the pack.
If you don’t use radar, select the clean Blank Door.

Interchangeable rear doors
Swap doors anytime to match your electronics. No need to replace the entire Aero Pack if your setup changes.

Rigid aluminum saddle mounting
Attaches to the saddle rails using an aluminum bracket and GoPro‑style interface.
This eliminates strap movement and keeps the pack aligned with the bike.

Full‑size rear access
Remove the rear door for wide, easy access to the storage compartment — simple packing, organizing and retrieval.

Quiet, organized cargo
Includes a soft zip organizer and foam pieces to cushion and secure your tools so they don’t rattle.

Modular and serviceable
The Aero Pack Body, Doors and Mounting Bracket are available individually.
Replace or reconfigure components without buying a whole new system.

Key Benefits

• Cleaner aerodynamics behind the rider
• Stable, strap‑free mounting
• Integrated radar positioning
• Easy access to essentials
• Customizable and upgrade‑friendly
• Quiet, organized storage

Product: Prestacycle System 500 Aero Pack
Product Type: Rigid aerodynamic under-saddle storage system
Storage Capacity: 500 mL
Maximum Recommended Cargo Weight: 500 g
Mounting Location: Beneath / behind saddle
Mounting System: Aluminum saddle-rail bracket with GoPro-style interface
Rear Interface: Interchangeable System 500 Aero Pack Door
Radar Integration: Model-specific interchangeable doors
Internal Cargo Management: Soft zip organizer and foam pieces included
Body Dimensions: 142 mm H × 133 mm D × 43 mm W
Internal Dimensions: 139 mm H × 130 mm D × 40 mm W
Opening: 108 mm H × 40 mm W
Complete System Weight: 189 g
Body Weight: 112 g
Mounting Bracket Weight: 28 g
Saddle Rail Compatibility: Standard round angled rise rails
Body Material: PETG
Door Material: PETG
Mounting Bracket Material: Aluminum
Water Resistance: Water Resistant
Warranty: 1 year against manufacturing defects

What's included

The System 500 Aero Pack — Complete System includes:

• System 500 Aero Pack Body
• Your selected System 500 Aero Pack Door
• Aluminum Saddle Rail GoPro Mounting Bracket
• Mounting hardware
• Soft zip internal organizer
• Foam cargo-management pieces

Radar, tools, inflator and other items shown in product photography are not included unless specifically stated.

Compatibility

System 500 attaches beneath the saddle using the included aluminum saddle-rail mounting bracket. The bracket faceplate can be installed in either orientation to provide different vertical positioning. The aluminum mounting rails extending from the Aero Pack can also be reversed to provide different fore/aft mounting positions.

Saddle compatibility: Designed for standard-diameter round saddle rails that rise and widen from the clamping area. System 500 uses a GoPro-style attachment interface, so other mounting solutions may also be compatible. Because of the weight and dimensions of the loaded Aero Pack, Prestacycle recommends using only metal mounting hardware capable of adequately supporting the system.

Available interchangeable doors support selected Garmin Varia, Wahoo TRACKR, Magene and Cycplus radar systems.

Because bicycle frames, saddles, seatposts and rear-wheel clearances vary, adequate clearance between the installed Aero Pack and bicycle must be confirmed before riding.

Prestacycle 1-Year Limited Warranty

The Prestacycle System 500 Aero Pack is warranted to the original purchaser for one year from the date of purchase against defects in materials and workmanship under normal intended use.

The warranty does not cover damage resulting from crashes, impacts, improper installation, incompatible components, modification, misuse, overloading, normal wear or other damage unrelated to a manufacturing defect.

Prestacycle may repair or replace a qualifying defective component at its discretion.

Crash damage is not covered by the product warranty.

Prestacycle may offer a separate crash-replacement program for System Aero Pack components. Crash-replacement availability, eligibility and replacement cost are governed by the terms of that program and are separate from warranty coverage.

How much does the System 500 hold?

System 500 provides 500 mL of internal storage capacity with a maximum recommended cargo load of 500 g.

Does the System 500 include the radar?

No. The compatible radar unit is sold separately. Select the appropriate System 500 Aero Pack Door for the radar you already own or plan to use.

Can I use System 500 without a radar?

Yes. Select the Blank Aero Pack Door for a clean storage-only configuration.

Can I change radar systems later?

Yes. The rear door is interchangeable. A compatible System 500 Aero Pack Door can be purchased separately, allowing you to reconfigure the same Aero Pack Body for another supported radar system.

Can individual System 500 parts be replaced?

Yes. The Body, Aero Pack Doors and saddle mounting bracket are available individually. This modular construction allows damaged or changed components to be replaced without purchasing an entirely new System 500.

What keeps tools from rattling inside the rigid body?

System 500 includes a soft zip organizer and foam pieces that can be used to contain, cushion and secure smaller ride essentials.

Is System 500 aerodynamic?

System 500 has a streamlined shape and is positioned beneath and behind the saddle to minimize unnecessary aerodynamic disruption. Its aerodynamic form is intentional; however, Prestacycle does not publish specific drag-reduction claims because the System 500 has not yet undergone controlled aerodynamic testing.

Why buy the Complete System instead of the individual components?

The Complete System provides everything needed for a System 500 installation at a discounted package price. At current individual pricing, the $89 Body, $49 Door and $15 mounting bracket total $153 when purchased separately. The Complete System is $129, saving $24.

Choose Your Aero Pack Door

Select the System 500 Aero Pack Door for your radar system, or select Blank for storage without an integrated radar.

Available configurations:

• Blank
• Garmin Varia™ RearVue 820
• Garmin Varia™ RTL515
• Wahoo TRACKR
• Magene L508
• Cycplus L7

Radar unit is not included.

Mounting Position

The saddle-rail bracket and Aero Pack mounting rails provide multiple installation positions to accommodate different saddles and bicycle geometries. Choose the position that provides secure mounting and adequate clearance from the seatpost, rear wheel, frame and other components.

Before riding, verify that all mounting hardware is securely tightened and that the Aero Pack cannot contact the rear wheel throughout normal bicycle use.