FLIP Cages. Bikepacking Cargo cages with a removable foot and compatible with quick detach panniers and bikepacking bags.

Hemlock with FLIP Cages Bikepacking Fork Packs

FLiP bikepacking cargo cages for nalgenes and quick detach bikepacking bags and fork packs

Atlas Rack Pack bikepacking bag for on top of a bike rack

FLiP Cages

FLiP (Fast Lock in Place) is the first cargo cage and fork pack mount in one. FLiP compatible bags, our Hemlocks, mount to FLiP cages with an easy hook of the base and a 90-degree turn of the handle. FLiP Cages are versatile cargo cages that work with any bag or bottle when using the included, removable cargo feet. Like all OMM products, they are secure, silent, and ready for any riding condition.

It is the perfect tool for carrying Hemlock bags, dry bags, or large bottles like Nalgenes on the legs of your Elkhorn rack, Axle Pack, or built-in 3-pack mounts.

Options: Cages Only (Pair)

Cages Only (Pair)
w/ 5L Hemlock Bags
w/ 7L Hemlock Bags

Product variants

FLiP Cages

Cages Only (Pair)

$80.00

Gravel bike with Old Man Mountain Hemlock bags attached to FLiP Cages, bike positioned in a rocky outcrop.

Old Man Mountain racks have been around the world, from Alaska to Antarctica, and they’ve carried everything from briefcases and beer to a month’s worth of provisions for unsupported adventure. They’re built to last and have a proven track record.

Trust us, the last thing we want is a call from a customer deep in the Peruvian Andes who needs a replacement rack! Whether you’re headed out to do some birding and bringing a tripod and picnic along, going on a packrafting trip for a week, a quick overnight just out of town, or riding to work, the FLiP Cages have your back.

We’ve spent years developing a reliable and robust quick detach mount that can withstand riding in the toughest conditions. FLiP is easy to use in the cold, in the mud, with gloves, in the sandy desert. Simply hook the lower support of your FLiP compatible bag to the cage, twist the lock 90 degrees, and away you go!

Our Hemlock bags are specifically designed for use with our FLiP Cages. These quick detach fork packs (or any 3-pack mount) are ready for everything! Sunshine or rain, your gear will stay dry and protected in these 100% waterproof, TPU fabric panniers with welded seams and Hypalon reinforcements.

All Terrain Ready

FLiP Cages and Hemlock bags are built for whatever riding you want to take on. Whether rowdy shredpacking or traversing around the world, they are ready for anything.

Old Man Mountain FLiP Cage and Hemlock bag shown being locked together in use on a gravel bike.

Quick Mount

No more struggling with straps and crushing your stuff. Simply hook the bottom of the bag and rotate the handle 90 degrees to lock the Hemlock bag in place, securely and silently!

Dual-Use Cargo Mounts

FLiP Cages are the first quick detach mounts that are also cargo cages with optional cargo feet. Need to carry a more water on your trip? No need to swap mounts, just strap the Nalgene on and go!

A gravel bicycle with drop handlebars and rear rack, loaded with Hemlock and dry bags, photographed outdoors against a rocky, forest-floor background.

5L or 7L Capacity

Resupply isn't guaranteed. 5L fits a sleeping bag, pad, or cook kit with space to spare; 7L balances compact carry with usable room. Both are measured with the closure rolled three times.

100% Waterproof Bags

Made from TPU fabric with HypalonⓇ reinforcements, fully welded seams, and a roll top enclosure. You can be fully confident that your gear will remain dry and protected, even if you don’t quite make that stream crossing.

Silence is Precious

We head out into wilderness to escape noise. We made sure that Hemlock and FLiP Cages are silent, secure, and strong. No more rattling, and clanging bags.

All Terrain Ready

FLiP Cages and Hemlock bags are built for whatever riding you want to take on. Whether rowdy shredpacking or traversing around the world, they are ready for anything.

Quick Mount

No more struggling with straps and crushing your stuff. Simply hook the bottom of the bag and rotate the handle 90 degrees to lock the Hemlock bag in place, securely and silently!

Dual-Use Cargo Mounts

FLiP Cages are the first quick detach mounts that are also cargo cages with optional cargo feet. Need to carry a more water on your trip? No need to swap mounts, just strap the Nalgene on and go!

5L or 7L Capacity

Resupply isn't guaranteed. 5L fits a sleeping bag, pad, or cook kit with space to spare; 7L balances compact carry with usable room. Both are measured with the closure rolled three times.

100% Waterproof Bags

Made from TPU fabric with HypalonⓇ reinforcements, fully welded seams, and a roll top enclosure. You can be fully confident that your gear will remain dry and protected, even if you don’t quite make that stream crossing.

Silence is Precious

We head out into wilderness to escape noise. We made sure that Hemlock and FLiP Cages are silent, secure, and strong. No more rattling, and clanging bags.

Full Product Specs

FLiP Cages

Made of rugged injected molded nylon
Cargo cages and FLiP compatible bag mounts
Removable Cargo Feet
Mounts to 3-pack mounts
94g (each), 140g with optional foot.
Cargo straps available separately
US Patent #12151766

Hemlock Bags

5 or 7 Liter capacity per bag
Fully welded and waterproof construction made from TPU fabric
HypalonⓇ reinforcements are more abrasion resistant and provide structure to the bags
PFAS/PFC free materials
Roll top enclosure is easy and reliable
Minimal branding
Lightweight minimalist weight: 5L = 330g (each); 7L = 348g (each)

A black and white technical diagram of a flip cage with labeled dimensions.

Descending singletrack toward Sisters, Oregon on the OTT700

The sheer ease of use of the FLiP system, needs to be studied and applied to every other bike accessory possible. You can attach or remove the bags with one hand in under three seconds, with absolutely zero vibration or rattling while riding. It’s pure genius.
— Paul, Slow Spin Society

One of the most genuinely useful cargo innovations we tested this year. They’re great as standalone cages with TPU strap holes and an optional foot, but they really shine in how well they integrate with OMM’s Hemlock bags.
— Logan Watts, Bikepacking.com

It’s such a treat to be able to just prop up my bike, open a bag that isn’t being crushed or deformed by straps, root around for what I need, and seal it back up again. Or better yet, literally flip a switch and sit down with the bag so I can take my time getting what I need.
— Travis Engel, The Radavist

Two black flip cage mounting brackets shown with eyelet hardware on a white background, labeled 'FLIP CAGES' and 'EYELET HARDWARE'.

Included in the Box

Hemlock Dry Bags of your choosing (x2)
FLiP Cages (x2)
Cargo Feet (x2)
3-Pack Mounting Hardware (x2)

Titanium gravel bike with Old Man Mountain FLiP Cages on the fork carrying Nalgene water bottles, and an Elkhorn rack on the back carrying an Atlas Rack Pack, pictured in the forest.

Quick Detach Mounts that are also Cargo Cages

FLiP Cages are the first quick detach mounts that are also cargo cages with optional cargo feet. Need to carry a bit more water on your trip? No need to swap mounts, just strap the Nalgene on and go!

FAQs

Please read our FAQs page to find out more.

What makes FLiP Cages different from regular cargo cages?

FLiP Cages do double duty! They're traditional cargo cages for carrying bottles, dry bags, and other strapped-on gear, but they also work as quick-detach mounts for compatible FLiP bags. Instead of unthreading straps every time you want to remove a bag, you simply hook it into place and rotate the handle to lock it.

One mounting system, two ways to carry your gear.

Which bags work with FLiP Cages?

FLiP Cages are designed to work with FLiP-compatible bags, including our 5L and 7L Hemlock bags. These bags attach using integrated hooks and a locking mechanism for a secure, low-profile connection.

Want to use a bag from another brand? It needs to be specifically designed for the FLiP mounting system to use the quick-detach function. Otherwise, you can use the cages in their regular cargo-carrying configuration.

Can I use FLiP Cages to carry water bottles or dry bags instead of a FLiP bag?

Absolutely! Each cage includes a removable cargo foot, which helps support bottles, dry bags, and other cargo secured with straps. Remove the foot when using a compatible FLiP bag, or install it when you want to use the cage as a traditional cargo carrier.

Cargo straps are available separately, so you can configure your setup for the gear you're carrying.

How much weight can each FLiP Cage carry?

Each FLiP Cage is rated for up to 9.9 lbs (4.5 kg). However, your bike's mounting points may have a lower weight limit, so always follow the lowest-rated component in your setup.

If your fork eyelets aren't rated for the load you need, consider mounting the cages to an Old Man Mountain Axle Pack or Elkhorn rack, which can provide a more suitable mounting platform.

How do I install FLiP Cages, and will they rattle on rough terrain?

FLiP Cages mount to standard three-bolt accessory mounts, commonly called 3-pack mounts. Installation requires the appropriate bolts, a hex key, and a torque wrench. Tighten the mounting hardware to 3 Nm and check all hardware before every ride.

When paired correctly with a compatible FLiP bag, the locking mechanism is designed to keep the bag secure and quiet, even on rough terrain. Follow our FLiP Cage installation instructions for the complete walkthrough.