Crankbrothers Gem
Best compact hand pump for mountain bikers needing reliable trailside inflation.
This is the rare pocket pump that actually makes roadside repairs feel manageable rather than a chore. The dual-piston design cuts inflation time significantly, trading a slightly bulkier feel for the kind of efficiency that gets you back on the trail before your legs even have a chance to cool down.
$26.99
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Who it's for
- Cyclists needing a versatile tool for both mountain and road tires
- Minimalist riders prioritizing space and weight savings on long rides
- Multi-bike owners who want one pump for their entire collection
Who should skip it
- Inexperienced users prone to bending or breaking delicate valve stems
- Road cyclists who frequently require very high tire pressures
- Precision-focused riders who need exact tire pressure measurements
Performance breakdown
Inflation Efficiency
Dual-piston design makes quick work of flat tires on the trail.
Portability
Compact aluminum frame disappears into a jersey pocket or saddlebag.
Build Durability
Robust aluminum construction handles rough handling and trailside abuse easily.
Valve Versatility
Seamlessly switches between Presta and Schrader valves without extra adapters.
Pressure Precision
Lacks a gauge, requiring you to rely on feel for pressure.
Ergonomics
Solid grip, though the small size limits leverage during high-pressure pumping.
Key Specs
Weight
128 g
Length
176 mm
Material
Aluminum
Max Pressure
100 psi
Valve Compatibility
Presta and Schrader
Pump Type
Mini Pump
Has Pressure Gauge
No
Has Digital Gauge
No
Has Foot Pegs
No
Tubeless Tire Compatibility
No
Know before you buy
Still have a question?
Ask Metto anything about the Crankbrothers Gem before you decide.