CrankbrothersGem Hand Pump

Wanted something reliable to replace the full size pump in my truck for MTB kit. This little pump works great, easy to use, and takes up way less space. Will carry on bike for bike pack trips too. Seems like a quality upgrade so far!

This pump works way better than you'd expect such a tiny thing to work. Very little effort to pump a tire up to 40 PSI. While there is no gauge, there is a distinct change in the pump sound when you hit ~40PSI, so you have some indication of when you'd need to swap to the high pressure mode. As I keep my tires around 40, I don't really need the high pressure mode, but it surely works.Read the instructions. I found it a little confusing to switch from the default Schrader mode to the Presta mode, and ended up lodging a piece in backwards. Watched a video right after and fixed it. Don't be me :)My main complaint is with the mounting bracket -- it's sturdy, but I simply wish the mount had the pump flush with the tube, rather than sticking out to one side. I have enough clearance on my Grizl to have the pump hanging off to the side, thankfully, but your bike may not be as friendly to that. I won't take off points for it, since it worked out for me, but do keep this in mind.

The media could not be loaded. I carry this as part of my road service kit while touring on a motorcycle. It is small enough to fit under my seat so I always have it with me. I never thought I’d have to use it until I did. One day I got a screw stuck in my tire and had to patch it on the side of the road. It took about a half hour of pumping but this little guy got me up to 25 psi. So yes, this will work on a motorcycle but it will take a while.

This product is very good for the value, but it does not fit well onto the valve stems. Both Schrader and Presta valves fit very tightly into their respective configurations. I have to push the pump head petty harshly to get the stem far enough into the pump to actually work. This isn't terrible for Schrader valve stems, but I am afraid I will damage the Presta stems. However, when the pump is fully on, it works very well and with ease.I am sure with repeated use, the rubber opening will wear down enough to make this easier, but this is an emergency pump on my bike and won't be getting use (hopefully) very often.

Works great

Good stuff

Crank Brothers knocks it out of the park again! I'm quickly becoming a fan of everything Crank Brothers. This isn't just your typical frame pump, it's both a high volume pump, and a high pressure pump in one. Twist the dial at the bottom one way, and you get high volume for fast inflation. Then when it starts getting too difficult to pump, twist the dial the other way and you can keep going to get up to your needed pressure. I haven't needed to use it in the field yet but did test it in the shop a bit and have no complaints. I don't know if I'd want to use this for a 120 psi road tire but it'll be great for my 60 psi mountain bike. It comes with the typical frame mount bracket to attach alongside your water bottle. It's also small enough to fit in a medium to large size seat wedge pack. The reversible presta/schrader head is typical and just works.

Great pump from crank brothers. Better than most of the cheap junk you find on here.

Great product and second time purchase. One for winter bike now too. Fits perfectly into saddlebag so I don't need the bracket.

Una pompa così ti può risolvere un bel problema se devi rigonfiare ruote tubeless antiforo.......comoda, piccola ma efficace.....attenzione, per utilizzare valvole presta l'ugello va svitato, la guarnizione capovolta e riavvitato.....come indicato nel disegno della confezione...che avevo gettato...per fortuna c'è YOUTUBE!!!

Excelente calidad por el precio, super portatil: ligera y compacta. Buena operación y gran desempeño, infla las llantas en un tiempo razonable por un esfuerzo proporcionalmente razonable, sin contar que puedes escoger entre dos presiones de inflado distintas, facilitando el trabajo a corde a la llanta que vayas a inflar. El acabado es muy bueno, se ve bonita y de calidad.El unico punto "malo" es la montura, si tu cuadro es de geometria no convencional pues alomejor batallas en colocarla pero como es realmente compacta no hay problema en llevarla en el jersey.

Bomba de alta presión con un tamaño contenido y unas prestaciones muy altas. Diseño con la clase habitual que caracteriza a la marca. Muy buena para ciclismo de carretera donde las presiones de los neumáticos son elevadas.

Ist sehr hochwertig verarbeitet sieht optisch top aus und ist aus Aluminium gefertigt.Die Funktion ist wirklich gut. Auch die umschaltung klappt einwandfrei. Man kann auch sehr schnell da mit einem grossvolumige Reifen (2.6) aufpumpen.Allerdings ist die Pumpe nicht so klein wie man denkt von der größe ist sie durch den integrierten Kopf schon etwas massiv.Eine Pumpe mit einem Schlauch Aufsatz ist in der Hinsicht schon kompakte und auch etwas geschickter zum aufpumpen.Wobei man mit diesem Kopf auch das Ventil sehr festhalten kann und keine Angst haben muss es abzubrechen.