Ulac Radtail GT 5.8 L – Waterproof Saddle Bag for Gravel and Bikepacking

The Ulac Radtail GT 5.8L Neo Porter Saddle Bag is a saddle bag designed for gravel, bikepacking, and long-distance adventures. Lightweight, waterproof, and highly durable, it is built to offer maximum stability and high carrying capacity even on the most demanding routes.

Developed through extensive road and off-road testing, the Radtail GT combines advanced functionality, waterproof materials, and intelligent details to ensure a stable, practical, and reliable riding experience on every bike trip.

Designed for Gravel, Adventure, and Bikepacking

The Ulac Radtail GT was created to meet the needs of experienced bikepackers, offering a reinforced structure capable of supporting heavier loads without compromising stability and riding comfort.

Thanks to its compact and aerodynamic design, the bag seamlessly integrates with:

• gravel bikes,
• MTBs,
• adventure bikes,
• e-bikes,
• touring bikes.

The fastening system with:

• 1 Velcro closure,
• 2 stabilization buckles,

ensures a firm and secure attachment to the saddle and seatpost.

Waterproof and Ready for Any Condition

Made from waterproof nylon and polyester, the Radtail GT effectively protects its contents from rain, dirt, and mud.

To tackle the most extreme gravel environments, ULAC also includes:

• a removable waterproof inner bag,
• perfect for keeping clothes, accessories, and electronics dry during the most demanding rides.

The soft-touch construction also prevents scratches and marks on the bike frame and components.

Large Capacity and Maximum Versatility

With a capacity of 5.8 liters, the bag offers enough space to carry:

• clothing,
• windbreakers,
• tools,
• nutrition,
• travel accessories.

The practical upper multistrap also allows for easy attachment of:

• a windbreaker jacket,
• a mini pump,
• or additional accessories.

Compatibility and Functional Details

The Ulac Radtail GT is compatible with most:

• gravel bikes,
• MTBs,
• adventure road bikes,
• e-bikes.

The rear and side eyelets allow a tail light to be mounted in different positions, improving visibility and safety during night rides or in low-light conditions.

Each bag also includes an exclusive multifunction triangular carabiner.

It is advisable to check compatibility with the seatpost and saddle before purchase.
Ensure the bag does not interfere with safe riding before use.

Technical Specifications

• Capacity: 5.8 L
• Dimensions: 450 (max) x 140 x 100 mm
• Weight: 325 g (bag only)
• Main material: Waterproof nylon + polyester
• Application: Gravel, bikepacking, adventure
• Compatibility: Suitable for most bikes and e-bikes
• Fastening system: 1 Velcro + 2 buckles
• Features:
  • Waterproof
  • Soft touch / anti-scratch
  • Rear and side eyelets for light
  • Upper multistrap
  • Reinforced structure
  • Waterproof inner bag included

Included Accessories

• Triangular carabiner x1
• Waterproof inner bag x1

Ideal for

• Bikepacking
• Gravel
• Bike touring
• Adventure riding
• MTB marathon
• Long-distance excursions

The Ulac Radtail GT 5.8L is the ideal choice for cyclists looking for a lightweight, waterproof, and stable saddle bag, perfect for tackling any off-road adventure with maximum practicality and reliability.