CrankTank 4
CrankTank 4
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The CrankTank 4 is a lightweight and rigid high capacity hydration system that fits on nearly any triangular hardtail bike, such as MTBs, gravel bikes and road bikes, and allows you to carry up to 1.06 gallons/4 liters of water. Compared to its little sister, the CrankTank 3, the CrankTank 4 is a bit larger in size and features a more rounded design.
The CrankTank kit includes everything you need to strap it on the bike and set out on your next adventure. The standard kit comes with a top-loading clip to hold your hydration tube in place when not in use. For other clip options, take a look at our CrankTank Accessories.
Similar to frame bags, rubbing between CrankTank and frame can occur over time and we recommend installing either a pair of our CrankTank Frame Adapters or alternatively wrap the areas of contact with some protective tape, such as helicopter tape for example, to protect the frame. Frame Adapters can also help with fitting the CrankTank onto some more exotic shaped or large down and seat tubes.
We are proud to say, that our CrankTanks are hand-made right here in sunny California where we are based.
Features
Features
The CrankTank is a great companion for bike touring, bikepacking, ultra distance racing and when riding on hot days or in remote areas. Utilizing two simple Velcro straps, installation/removal takes less than a minute and thanks to the CrankTank's ideal placement above the bottom bracket, the point of gravity is kept low and bike handling is not affected.
Compared to a full frame bag, there is no leg rub as the CrankTank keeps its shape, even when completely full, water levels are visible at all times (applies to all available colors) and thanks to its sturdy design, accidentally pinching your water bladder is not something you will have to worry about.
Due to the efficient use of space and its single chamber design, the CrankTank also offers the potential for weight savings compared to mounting bottles and cages in multiple places across the bike to achieve the same capacity.
Specifications
Specifications
- Capacity: 1.06 gallons/4 liters
- Width: ~ 115 mm
- Weight (Tank with Cap Only): 13.4 ounces/380 g
- Weight (Fully Fitted): ~ 17 ounces/480 g
- Material: Food Grade PE, PVC & Nylon
Included in Order
Included in Order
- 1 CrankTank 4 Reservoir
- 1 CrankTank Standard Cap
- 1 Insulated Hydration Tube
- 1 Hydration Tube Clip
- 2 Zip Ties for Hydration Tube Clip
- 2 CrankTank Frame Straps
- 2 CrankTank Tube Straps
- 1 Piece of Heat Shrink Tubing for Hydration Tube Length Adjustment
Sizing Guide
Sizing Guide
To make sure your bike frame offers enough space to fit a CrankTank 4, please head over to our FAQs where you can find detailed information on how to take a measurement or print one of our sizing guides:
In certain instances, the CrankTank Frame Adapter can also help with fitting the CrankTank to your bike.
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I ride self-supported rides in the Northern Nevada area. Gravel mainly. There are no sources of water for over 50 mi. Most of the time where I'm riding. This was an absolute game changer. Being able to carry point a gallon on the bike that sat stable rough dirt roads is amazing and I'm so thankful. Keep up the good job guys.
The CrankTank 4 is a great hydration solution for my bike packing adventures. With the frame adapters it fits very snugly on my Lynskey Elysium gravel bike.
Je suis assez déçu, au premier remplissage en me préparant à partir en voyage, le bouchon fuit!! La jonction entre l’orifice pour boire et le reste du bouchon sont mal collé… je m’attendais à plus de rigueur.
De plus, en visionnant les photos du produit sur le site, je constate que les petites cales évitant le cranktank de frotter directement sur le cadre ne sont pas fourni ! Je vais devoir bricoler quelque chose, se qui n’est pas normal quand on paye un produit à ce prix!
Sinon le corps du tank semble de bonne qualité.
Recently purchased and immediately took the CrankTank4 on a 3 day bikepacking adventure - 2/3 offroad 1/3 railtrail. Was an exceptionally hot and humid few days for the trip (central PA in July) and I was very happy to have the extra water capacity and also to extend times in between when I'd have to stop and perform the chore of filtering stream water to refill. The Crank Tank fit my larger Niner SIR9 frame perfectly and the included hydration hose and mouthpiece fit great attached to the handlebars so I could easily drink on the move. A few notes/observations - I did add some soft side of velcro strips to the tank to mitigate any potential frame rub spots, and the click attachment for the hydration hose at the tank seems a little less robust than I would like, but so far no issues whatsoever. Really happy with this product and highly recommend.
Reviewed already. Update. I finally installed it on the Kona Sutra. It took some finagling. Also, I ended up using a different strap and it still is not as snug as I wish it was. Four good old fashioned toe straps or those silicon straps or something, but these two wide velcro straps do not secure it snug and secure. An attachment hole at the bottom would help. I'll MacGyver something. Not unhappy, just not perfect. Yet.
Thank you for your feedback! Looking at the Kona Sutra, a pair of frame adapters would probably help with the fit, as the diameter of the down and seat tube of that specific bike are relatively small in diameter. While our standard frame adapters would probably be sufficient for the Kona Sutra, we sometimes also make custom adapters for customers to help with the fit of the CrankTank. Send us an email if you need any help!
I ride self-supported rides in the Northern Nevada area. Gravel mainly. There are no sources of water for over 50 mi. Most of the time where I'm riding. This was an absolute game changer. Being able to carry point a gallon on the bike that sat stable rough dirt roads is amazing and I'm so thankful. Keep up the good job guys.
The CrankTank 4 is a great hydration solution for my bike packing adventures. With the frame adapters it fits very snugly on my Lynskey Elysium gravel bike.
Je suis assez déçu, au premier remplissage en me préparant à partir en voyage, le bouchon fuit!! La jonction entre l’orifice pour boire et le reste du bouchon sont mal collé… je m’attendais à plus de rigueur.
De plus, en visionnant les photos du produit sur le site, je constate que les petites cales évitant le cranktank de frotter directement sur le cadre ne sont pas fourni ! Je vais devoir bricoler quelque chose, se qui n’est pas normal quand on paye un produit à ce prix!
Sinon le corps du tank semble de bonne qualité.
Recently purchased and immediately took the CrankTank4 on a 3 day bikepacking adventure - 2/3 offroad 1/3 railtrail. Was an exceptionally hot and humid few days for the trip (central PA in July) and I was very happy to have the extra water capacity and also to extend times in between when I'd have to stop and perform the chore of filtering stream water to refill. The Crank Tank fit my larger Niner SIR9 frame perfectly and the included hydration hose and mouthpiece fit great attached to the handlebars so I could easily drink on the move. A few notes/observations - I did add some soft side of velcro strips to the tank to mitigate any potential frame rub spots, and the click attachment for the hydration hose at the tank seems a little less robust than I would like, but so far no issues whatsoever. Really happy with this product and highly recommend.
Reviewed already. Update. I finally installed it on the Kona Sutra. It took some finagling. Also, I ended up using a different strap and it still is not as snug as I wish it was. Four good old fashioned toe straps or those silicon straps or something, but these two wide velcro straps do not secure it snug and secure. An attachment hole at the bottom would help. I'll MacGyver something. Not unhappy, just not perfect. Yet.
Thank you for your feedback! Looking at the Kona Sutra, a pair of frame adapters would probably help with the fit, as the diameter of the down and seat tube of that specific bike are relatively small in diameter. While our standard frame adapters would probably be sufficient for the Kona Sutra, we sometimes also make custom adapters for customers to help with the fit of the CrankTank. Send us an email if you need any help!