

Price: $44.95
Dimensions: 18.7 x 8.2 x 4 cm / 7.4″ x 3.2″ x 1.6″
Capacity: 0.5 L
Color: Black
Attachments: With frame straps or mounted to top tube with integrated bosses
Fits head tube sizes: 0.35-0.75 mm
Fits top tube size: 0.35 – 0.50 mm
Weight: 70 grams
Availability: Online or retail
Obtained by: Company sample
RBR advertiser: No
Convenient, Sturdy Top Tube Storage
Are you looking for a little extra storage on your bike? Need a place to store your car key, nutrition, extra battery pack, or credit cards? Topeak’s new Fastfuel Bag Bolt-on is compact, sturdy, and convenient.
There are two options for how the bag attaches to the top tube. First, use the two scratch-free straps to attach ― one around the top tube and the second around the head tube. Or if your frame has built-in top tube water bottle bosses, use the two openings on the bottom of the bag to feed the bolts through and the head tube strap
The large zipper pull tab allows for easy opening, even with gloves. An opening at the front of the bag lets you route a charging cable for your phone, light, or cycling computer.

I used the straps to fasten the bag to the top tube on all my test rides, and it never shifted or moved. The bag size was perfect for stashing my credit cards, key fob, and gel packs. An added plus is the bright yellow interior lining making it easy to find items inside.
At an affordable price point of $44.95, this quality bag should provide miles and miles of convenient storage.
Sheri Rosenbaum regularly contributes articles and reviews products for RBR. She’s an avid recreational roadie who lives in the Chicago area and a major advocate for women’s cycling, serving on the board of directors and volunteering with the Dare2tri Paratriathlon Club. Click to read Sheri’s full bio or visit her web site sunflowersandpedals.com.
One caution about riding with this kind of bag. I used a similar bag at a gravel ride in SC and it rained and sand and grit collected around the straps and did quite a scratch job on the top tube where the straps are. Might want to put some protective film on first before putting that bag on your shiny bike. True for all possible contact points.
I echo Pete’s comments and find this to be almost universally true with any bag that attaches to a frame. I have struggled for several years to find bags that do not scratch or dull the frame underneath the straps.