Downtube Packs

The Downtube Pack is our solution for adding extra storage to a frame without traditional cargo mounting points thanks to patented V-Mount hardware that create a truly solid, reliable, and repeatable connection between bike and pack.

Downtube Packs allow you to utilise free space for carrying the essentials whether on a mountain bike trail ride, bikepacking adventure, or road tour. Available in two sizes, 1.7 litre, and 3 litre. Optimised to maximise space regardless of frame geometry.

Each pack ships with 2x Tailfin V-Mount Straps, designed to work with your frame.

From: Original price was: $81.96.Current price is: $85.00.

Free shipping over $205.00 30-day returns policy 5-year warranty
What size DownTube pack can I carry?

1.7L Down Tube Packs are best suited to Road and gravel bikes due to the width of the cranks and down tube. MTBs will fit either 1.7L or 3L DownTube packs and we recommend the 3L for MTB more often. This is due to a wider crank spacing, wheel clearance and down tube.

Are the DownTube Packs waterproof?

The bag is completely waterproof as long as you ensure you include at least two tight rolls of the material before closing.

Can I bolt the DownTube Pack onto my frame mounts?

The way the bag is designed, means you cannot insert screws into the frame from inside the bag. It is fitted with V-Mounts to use with our TPU straps instead.

What are these packs designed to carry?

They are perfect for spares and tools. Put them on the frame and forget they are even there!

Are there multiple ways to close the bags?

Yes, you can roll close them and clip the ends together at the top of the bag, or roll them and use the T-hook straps to clip them down the sides to keep the top of the bag away from the front wheel.

What are the differences between DownTube Packs and Cage Packs?

The DownTube Packs have V-mounts so they can be placed directly onto your frame and the Cage Packs require one of our Cargo Cages in order to be fitted to the bike as they do not come with v-mounts.

Specifications

1.7L V-Mount Pack

Size
1.7L

Riding Style
Road & Gravel

Weight
210g

Maximum Load
3kg

Construction
420D Hypalon/Ripstop Nylon

Waterproof
100%

Also Included
2 x 18.5cm Cargo Straps
2 x 30cm Cargo Straps (for when mounting on larger diameter frame tubes)
3 x M5 Blanking Plug

1.7 v-mount spec

3L V-Mount Pack

Size
3L

Riding Style
MTB

Weight
277g

Maximum Load
3kg

Construction
420D Hypalon/Ripstop Nylon

Waterproof
100%

Also Included
2 x 30cm Cargo Straps
3 x M5 Blanking Plug

3l v-mount pack

Tried & Tested

Awards and Reviews from the people you trust the most.

“For those who choose to bikepack on rigs that are completely bereft of bonus eyelets, and the ability to fit a cargo cage of some sort, the Downtube pack is definitely an appealing solution to carrying extra gear. It’s durably made, 100% waterproof, and considerably kinder to your paintwork than Velcro-mounted alternatives.”

Read Bikepacking.com’s full review

“Tailfin’s Downtube bags nicely fill a gap in their lineup for folks that are lacking dedicated mounting points. The pack is remarkably stable and well thought out, with materials built to last years on the road.”

Read The Radavist’s full review

Top tip: Try searching for your bike make/model below to find others using this product on your bike.

Packing guide

 
  • 1.7l downtube pack
    The 1.7L Downtube Pack can carry essentials such as an extra layer, pump, tube, and toolkit
  • 3l downtube pack
    The 3L Downtube Pack can carry much more, here shown with 1L Nalgene bottle, camp stove system, pump, tube and tool.

Additional Product Imagery