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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

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.

Customer Reviews

Based on 172 reviews
87%
(150)
10%
(17)
0%
(0)
2%
(4)
1%
(1)
P
Phoebe Gelbard (US)
Bike: Cannondale F-Si
Riding Style: Road / Ultra-endurance, Bikepacking, MTB
downtube pack — 3L

I’ve put ~800 miles on my downtube pack so far during a handful of rides and ultra races, and it’s barely looking broken in. I can’t believe how solidly it stays in place and out of the way while tackling all kinds of gnar, including raucous descents, log hopping, and rock gardens. It’s been great for storing tools and occasionally stashing snacks, spare layers, and other miscellaneous items. It’s undeniably waterproof, durable, and one of the most reliable pieces of gear I own.

R
Rob Mcritchie (GB)
Bike: Specialized Epic WC
Riding Style: Bikepacking, MTB
Downtube+pack.+-+just+works

Second+one+I+have+bought.++First+is+perma+mounted+on+my+road+endurance+bike%2C+easily+holding+tool+kit+in+a+secure%2C+totally+water+proof+setup.++I+use+a+neoprene+tool+canister+sleeve%2C+from+a+Scott+tool+canister++I+think%29+to+hold+all+my+tools+together+so+I+can+easily+get+them+all+in%2Fout+of+the+bag+quickly.This+one+is+now+mounted+on+a+Specialised+epic+WC%2C+for+multi+day+bike+packing+events+when+I+need+2+water+bottle+mounts+for+water%2C+or+want+to+use++a+frame+bag.It%27s+just+as+reliable+as+on+my+road+bike.

K
Katharina Siegel (DE)
Bike: Cicli Bonanno
Riding Style: Road / Ultra-endurance, Bikepacking, MTB, Touring

Most versatile equipment I ever had. Using it on my road bike and MTB for bike packing trips.

B
Ben (SG)
Bike: Ritchey Swiss Cross V3
Riding Style: Road / Ultra-endurance, Bikepacking
Great product and even greater service

Fantastic product that is well thought out, designed and executed by great quality and workmanship!!

I had some short delivery, and when I contacted the customer service team, they promptly responded and checked their system. They immediately rectified the short delivery by sending out the missing item. Great customer service!

Hi Ben, Thanks for your feedback and apologies you had this issue. I'm pleased we were able to resolve it for you and hope you enjoy using your DownTube Pack on future rides too! All the best, Poppy

Load More
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.

Specification

1.7 v-mount spec
3l v-mount pack
Model
Model

1.7L V-Mount Pack

 Model

3L V-Mount Pack

Riding Style

Road & Gravel

 Riding Style

MTB

Weight

210g

 Weight

277g

Maximum Load

3kg

 Maximum Load

3kg

Bag Construction Material

420D Hypalon/Ripstop Nylon

Bag Construction Material

420D Hypalon/Ripstop Nylon

Waterproof

100%

 Waterproof

100%

Packing guide

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

Additional Product Imagery