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Item # CRN0186 20% Off

4 5

Community Rating | 3 Reviews

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Item # CRN0186

Description

Light is right.

Stuff the Crank Brothers Gem Pump in your pack and you'll be the envy of flat tire enthusiasts everywhere. This high-volume dual piston pump can get you all the way to 130 PSI if you need it to, and it does it in a hurry. It also does it in stylish anodized color, or in classic silver, if that's your thing. A reversible head adapts to your valve stem whether it's Shrader or Presta. The best part? The short version weighs just 128 grams, so you won't even know it's there until you need it.

The Crank Brothers Gem Pump comes in two sizes: Large (Long) and Small (Short). It's available in Green, Red, or Silver.

Tech Specs

Material:
aluminum
Dimensions:
[short] 176 mm, [long] 205 mm
Valve Type:
Schrader, Presta
Max Pressure:
130 PSI
Deflate:
no
Claimed Weight:
[short] 128 g, [long] 155 g
Recommended Use:
fixing flats

Reviews & Community

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Crank Brothers Gem Pump

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Here's what others have to say...

4 5

Great little pump

  • Gender: Male
  • Familiarity: I've put it through the wringer

Compact, lightweight and easy to use despite it's small size. Easily stows in my cambelbak without taking up much room. Quality construction, durable, works very well. I only use it for MTB so I can't attest to how it works with high-pressure road tires.

4 5

I like. I like it, I say.

  • Familiarity: I've used it several times

This is my first Crank Brothers purchase, and I'm impressed by the quality of this product. The pump is lightweight and includes a bracket for attaching the pump beneath your water bottle cage so you never need to leave home without it. The red color doesn't quite match my bike's colorway, but that's a minor quibble.

The pump attaches to my Presta valves no problem. Due to its small size, pumping is a bit more difficult than with larger hand pumps. I'm not sure if I could actually pump a tire up to 130 PSI with this thing as per spec, but it will get you pumped again to rol home without too much trouble.

One caveat about pumping with this pump: because the pump head is attached to the pump shaft, I worry a bit about the torque I'm putting on the tube valve as I pump back and forth. I think that perhaps the design Lezyne uses (with a tube attachment between the shaft and the pump head) is a smarter one to prevent so much pressure being put on the valve as you pump the tire.

4 5

Continues the tradition

  • Familiarity: I've used it once or twice and have initial impressions

I have a high opinion of all the Crankbrothers products I have owned and this pump only furthers that. About ten years ago I owned one of their first mini-pumps and it lasted a long time. Just like that pump the Gem has two-stage action. It can pump either high volume, which is awesome for getting a head start on airing up a tire, or high pressure, which is perfect for topping a tire off.
This pump permanently resides in my pack and will be what I turn to should the need arise.

Unanswered Question

We have a bike that has the Gem Pump in a...

We have a bike that has the Gem Pump in a pack but we're not sure just how it works. It has a pressure gauge on it and kind of looks like a hammer. Do you have instructions on how to use this item>