Description
Description
The Topeak FastFuel Bag Bolt-On is a compact, padded 0.5 L top tube bag that keeps energy bars and gels within reach on a ride. The FastFuel Bag Bolt-On bolts to built-in frame bosses or fixes on with two straps, and weighs 70 g.
Who it's for
Riders who want their ride food in front of them, not buried in a jersey pocket. Bars, gels and other energy items sit in one main compartment on the top tube, ready to grab while you keep pedalling. Running a phone? A battery cable access point lets you charge your smartphone on the ride.
Fitting it to your bike
You get two ways to mount it:
- Bolt-on: fixes to a top tube with built-in water bottle bosses. The wide-open bolt slots let you adjust the position to suit different frame sizes.
- Straps: two secure, scratch-free straps go around the top tube.
The FastFuel Bag Bolt-On fits a top tube of 35–75 mm and a head tube of 30–50 mm in diameter.
Capacity and what fits
0.5 L in one main compartment, in a bag measuring 18.7 x 8.2 x 4 cm. That is the slot for your energy bars, gels and the other fuel you want on hand.
Looking after it
Grit, mud or a badly packed bag can dull or scratch paint where the bag sits, so fit foam covering or protective film to the frame first.
Specifications
Specifications
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Capacity
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Dimensions
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Material
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Weight
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Compatibility
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Compartments



