Topeak MTX Trunk Bag

No, this bag is specifically designed for Topeak's MTX QuickTrack racks. It uses a proprietary sliding rail system, so it will not securely attach to standard flat-top racks without an adapter.

The bag is constructed from 600 Denier polyester, which is water-resistant and durable enough to handle light rain and road spray. However, it is not fully waterproof, so you should use a rain cover if you are riding in heavy downpours.

With a 12.3-liter capacity, it is sized perfectly for daily commuting essentials like a light jacket, a multi-tool, a spare tube, and lunch. The divided main compartment helps keep larger items from shifting around, while the side pockets are ideal for smaller items like keys or a wallet.

Yes, it is designed for portability. It includes a detachable shoulder strap and a convenient carrying handle, making it easy to grab and go once you detach it from the rack.

The rear water bottle holder is positioned to keep the weight centered and out of the way of your legs while pedaling. It is designed to hold a standard cycling water bottle securely, though it may be tight for extra-large insulated bottles.

The MTX QuickTrack system is very secure. Once you slide the bag onto the rack, it clicks into place and stays firm even on bumpy roads or gravel paths, preventing the bag from bouncing or shifting during your ride.