Bontrager Adventure Boss Frame Bag FAQ

Do the Adventure Boss Frame Bags come with the straps required to mount to any bike?

Yes, each bag will come with all required straps for mounting to most bikes.

Do the Adventure Boss Frame Bags come with the Bontrager Thumb Screws to attach on Trek bikes with integrated boss mounts?

No, they are available separately – Bontrager Thumb Screws are Model No. 37387

What size bag will I need for my Trek bike with integrated boss mounts for the Adventure Boss Frame Bag?

The bag will fit differently depending on the bike family and bike size. See below for compatible bikes and sizes.

Trek Checkpoint

49 cm – 1.3 L
52 cm – 1.7 L
54 cm – 2.5 L
56 cm – 3 l
58 cm – 5 l
60 cm – 5.9 l

Trek FX Sport

S – 1.3 l
M – 3 l*
L – 5 l
XL – 5.9 l
* The furthest rear boss mount will not align to use a Thumb Screw. Use one of the provided straps at that location.

Trek Dual Sport

S – 1.3 l
M – 3 l*
L – 5 l
XL – 5.9 l
* The furthest rear boss mount will not align to use a Thumb Screw. Use one of the provided straps at that location.

What size bag will fit best on my bike without boss mounts?

Measure the internal dimensions of your bikes top tube and match the measurement to the dimensions of the bags listed below. If you’re between sizes, we recommend sizing down to avoid the bag bunching up inside your frame.

1.3 l – 42 cm (L) x 5 cm (W) x 11 cm (H)
1.7 l – 45 cm (L) x 5 cm (W) x 11 cm (H)
2.5 l – 48 cm (L) x 5 cm (W) x 12 cm (H)
3 l – 51 cm (L) x 5 cm (W) x 12 cm (H)
5 l – 52 cm (L) x 5 cm (W) x 13 cm (H)
5.9 l – 54 cm (L) x 5 cm (W) x 14 cm (H)