Bontrager Air Support HV Mountain Bike Pump - 429235
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Product Information
Full details
The Bontrager Air Support HV Mountain Bike Pump is an essential tool for trail riders who need to handle flat tires efficiently in the backcountry. Engineered with a large-volume chamber specifically for high-volume MTB tires, it allows for quick inflation up to 60 psi with minimal physical exertion, though its size is optimized for mountain bikes rather than high-pressure road tires.
All features
| Model Part Number | 429235 |
|---|---|
| Brand | Bontrager |
Extended Product Information
FAQs
Does this pump work with road bike tires?
It is optimized for high-volume mountain bike tires and caps out at 60 psi, so it is not recommended for high-pressure road tires.
Can I mount this if I only have one set of bottle cage bolts?
Yes, the mounting bracket is designed to sit underneath your existing bottle cage using the same mounting points.
How do I switch between valve types?
Unscrew the head cap and flip the internal rubber seal and plastic spacer to match your valve type.
Does this pump include a pressure gauge?
No, this model is designed for simplicity and durability, so it does not feature an integrated gauge.
Is the pump body weather-resistant?
The pump is built for rugged trail conditions, but regular cleaning is recommended after riding in muddy or dusty environments.
Troubleshooting
Pump is hard to stroke
The pump shaft may need lubrication; apply a small amount of light silicone or bike grease to the internal seal.
Air is leaking while pumping
Ensure the locking lever is fully engaged and the valve head is pushed completely onto the valve stem.
Head does not fit the valve
Check that the internal gasket and spacer are oriented correctly for either Presta or Schrader valves.
Pros and Cons
Pros
- Efficient high-volume airflow for quick MTB tire inflation
- Versatile head works with both Presta and Schrader valves
- Durable construction built for rugged trail conditions
- Convenient under-bottle-cage mounting hardware included
Cons
- Maximum pressure limited to 60 psi
- Not suitable for high-pressure road bike tires
- Lacks an integrated pressure gauge
Setup, Compatibility & Care
Installation of the included mounting bracket is straightforward. Use the provided bolts to sandwich the bracket between your bike frame and the water bottle cage. Ensure the bolts are tightened securely to prevent rattling on technical descents.
Regarding compatibility, the pump head is reversible. Simply unscrew the cap on the head, remove the internal rubber gasket and plastic spacer, flip them, and reassemble them to change the valve interface. To maintain the pump's longevity, keep the internal seals clean and occasionally apply a light bicycle grease to the pump shaft if the action becomes stiff after riding in wet or dusty conditions.