The Topeak MTX TrunkBag EXP is a high-capacity rear rack bag designed for commuting, touring, and everyday cycling adventures. Featuring a divided main compartment, expandable side panniers, and a rear water bottle holder, it offers versatile storage for gear, clothing, tools, and ride essentials. Constructed from durable 600-denier polyester with rigid EVA foam insulation, it delivers excellent shape retention, water resistance, and long-lasting durability. The MTX QuickTrack® 2.0 mounting system provides fast, secure attachment to compatible MTX racks, while practical features such as a shoulder strap, carrying handle, reflective details, safety light clip, elastic cargo cord, and mesh pocket add convenience on and off the bike. With a generous 16.6-liter capacity, the MTX TrunkBag EXP is an ideal storage solution for riders who need expandable cargo space without sacrificing stability or ease of use.

Key Features

Expandable Side Panniers

Deploy the integrated side panniers when additional storage is needed for commuting, touring, groceries, or extra riding gear.

Reflective Elastic Cargo Cord

Secure jackets, layers, or quick-access items externally while increasing visibility in low-light conditions.

Stretchable Mesh Pocket

Convenient exterior storage pocket for snacks, gloves, tools, or other essentials you need to access quickly.

Shoulder Strap Included

Easily carry the bag off the bike when commuting, shopping, or traveling.

3M™ Reflective Strip

Improves visibility from multiple angles to help keep you safer during dawn, dusk, and nighttime rides.