Triangle Frame Bag MKIII

Acepac Triangle Frame Bag MKIII - compact 2 L frame bag

Triangle Frame Bag MKIII is a compact 2 L frame bag for tools, a phone, wallet, keys, snacks and other gear you want to carry inside the frame triangle. Its low weight and slim profile make it a practical choice for bikepacking, gravel, XC and everyday rides.

One of its main advantages is the reversible design. A laser-cut Hypalon chain runs around the perimeter of the bag, allowing the mounting straps to be positioned according to the geometry of a particular frame. This makes it possible to use the bag in different orientations and adapt it to some smaller or full-suspension frames.

2 litres for everyday gear and bikepacking

The 2 L capacity provides enough room for essential tools, spare parts, a phone, wallet, keys, snacks or other small items. Triangle Frame Bag can be used as a standalone bag for shorter rides or as additional storage in a larger bikepacking setup.

Its slim shape makes use of the space beneath the top tube without filling the entire frame triangle. We recommend comparing the dimensions of the bag with your specific frame before ordering.

• capacity: 2 L
• weight: 130 g
• dimensions: 35 × 6 × 6/13 cm
• materials: Nylon Robic, Ripstop, Hypalon
• zipper: water-resistant YKK with two sliders

Reversible design for different frame geometries

A laser-cut Hypalon chain runs around the perimeter of the bag. The mounting straps can be positioned through its openings according to the specific frame, allowing the bag to be turned around when required.

This design expands the mounting options for gravel, road and XC bikes and can also make installation easier on some full-suspension, smaller or children's frames. Always check that there is sufficient space for the bag and its contents before riding.

By reversing the bag, the wider section can be positioned on the opposite side of the frame triangle to better suit the geometry of the bike. This can help make better use of the available space or avoid interference with a rear shock, bottle cage or other equipment.

Five straps for secure attachment

The bag attaches to the frame using 5 Velcro straps. Thanks to the Hypalon chain around the perimeter, the position of the straps can be adapted to the frame so that the bag remains stable and the straps do not interfere with cables or other equipment.

For longer rides, especially in dusty or muddy conditions, we recommend checking the contact points between the straps and the frame paint.

Quick access through a long YKK zipper

The main compartment is accessed through a long water-resistant YKK zipper with two sliders. The two sliders allow you to open only the section of the bag where the item you need is stored.

The long opening also makes packing easier and helps you make efficient use of the entire internal space.

Two mesh pockets for better organisation

Inside the bag are 2 mesh pockets for smaller items that you do not want moving freely in the main compartment. They are useful for keys, compact tools, energy gels, cables or other small essentials.

The bright-coloured lining makes it easier to see inside the bag and quickly find smaller items.

Lightweight and durable Nylon Robic

The outer part of the bag is made from Nylon Robic, combining low weight with good resistance to mechanical wear. This is particularly useful for a frame bag exposed to constant vibration, dust and contact with other equipment during regular use.

Water-repellent, not waterproof

Triangle Frame Bag MKIII uses a water-resistant YKK zipper and PU-coated materials that help protect the contents from light rain and splashing water.

The bag is not designed as a fully waterproof drybag. During prolonged or heavy rain, we recommend keeping your phone, electronics and other moisture-sensitive equipment in a separate waterproof pouch.

Use it alone or as part of a bikepacking setup

On shorter rides, Triangle Frame Bag can carry the essential gear without the need for additional bags. For longer trips, it can be combined with the Mini Bar Roll MKIII, Bar Bag MKIII or Drop Post Bag MKIII.

This allows you to carry part of the heavier or frequently used gear near the centre of the bike and distribute the remaining load between the handlebars and saddle area.

Why choose the Triangle Frame Bag MKIII

• practical 2 L capacity
• low weight of just 130 g
• compact shape for the frame triangle
• reversible design
• perimeter chain made from laser-cut Hypalon
• 5 Velcro straps for adapting the fit to different frames
• long water-resistant YKK zipper with two sliders
• 2 internal mesh pockets
• bright lining for easier visibility
• lightweight and durable Nylon Robic
• suitable for everyday riding, racing and bikepacking

Frequently asked questions

What can I fit inside the Triangle Frame Bag MKIII?
The 2 L capacity is suitable for tools, spare parts, a phone, wallet, keys, snacks and other small essentials.

Why can the bag be used in both orientations?
A laser-cut Hypalon chain runs around the perimeter and allows the mounting straps to be repositioned. The bag can therefore be reversed according to the geometry of the frame.

What types of bikes is the Triangle Frame Bag suitable for?
It is designed primarily for gravel, road and XC frames. Thanks to the reversible design, it can also fit some full-suspension, smaller or children's frames. We recommend comparing the bag dimensions with your specific frame before ordering.

Is the Triangle Frame Bag MKIII waterproof?
No. The bag is water-repellent. The water-resistant YKK zipper and PU-coated materials provide protection against light rain and splashing water, but the construction is not fully waterproof.

How is the interior organised?
The main compartment is complemented by 2 internal mesh pockets and a bright lining that makes smaller items easier to organise and find.