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CycleOps Fluid² Turbo Bike Trainer

CycleOps Fluid² Turbo Bike Trainer

Item # CY9904

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Our Price: $299.99

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Shipping Weight: 22 lbs

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Bike Trainers CY9904 - No Watt Measurement - CycleOps
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Product Images

In Use/Installed


  • Bike Resistance Trainers
  • Progressive Resistance
  • Fluid Resistance
  • CycleOps
  • Virtual Training
  • 29 Inch
  • 700c
  • 26 Inch
  • 27-1/2 Inch
  • 650b
  • 20 Inch w/ Accessory
  • 24 Inch w/ Accessory
  • No Watt Measurement
Call 800-298-8924 to order CycleOps bike trainers part number CY9904 or order online at Free expert support on all CycleOps products. Guaranteed Lowest Price and Fastest Shipping for CycleOps Fluid² Turbo Bike Trainer. Bike Trainers reviews from real customers.

  • All Info
  • Reviews (2)
  • Q & A (1)
  • Videos (1)
  • Photos
  • Why etrailer?

CycleOps Bike Trainers - CY9904


  • Fluid² is the best-selling trainer in the USA
  • PowerTuned for optimal road-like feel
  • Fluid resistance unit provides a quiet and consistent ride
  • Noise level at 20 mph is super quiet 64-68 decibels
  • Large, individually precision-balanced flywheel allows for improved road-like feel
  • Self-cooling mechanisms including a patented fan design keeps the unit performing better, longer
  • Eccentric leveling feet allow for easy adjustment on uneven surfaces
  • Comes on the CycleOps foldable Classic frame with spring-loaded, bolt-action lever
  • Precision-machined alloy roller reduces tire wear and slippage
  • Features clutch knob for perfect roller to tire tension each ride
  • 2" Resistance unit allows for 650b, 700c, 26", 27", and 29" wheel sizes
  • This trainer is designed to fit common road and mountain bike frames with included steel quick-release skewer
    • Has three settings for rear dropout spacing: 120mm, 130mm, and 135mm
  • Trainer tire (CY9710 or CY9711 - sold separately) recommended
  • CycleOps VirtualTraining compatible
  • Limited lifetime warranty


Better health. Faster splits. More me-time. Whatever your goals may be, the Fluid² helps you get the most out of each indoor training ride. The large, precision-balanced flywheel (with patented fan design) lets you easily customize each ride simply by shifting gears, just as you would outside. This design also helps keep your Fluid² working better, longer. And thanks to our built-to-last manufacturing process, the Fluid² can help you conquer one goal after the next.

9904 CycleOps Fluid² Turbo Bike Trainer

Video of CycleOps Fluid² Turbo Bike Trainer

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for CycleOps Fluid2 Turbo Bike Trainer Review

Today we'll be taking a look at the CycleOps Fluid2 trainer, part number CY9904. Ride with one of the best selling bike trainers in the US. The Fluid2 helps you get the most out of your training regardless of the time, temperature or traffic. The large precision balance flywheel creates the same inertia riders feel on the road and the flywheel keeps spinning when you stop pedaling to simulate coasting. Fluid inside the casing heats and expands creating resistance as you pedal faster. The patented design channels one hundred percent of the air intake to cool the fluid and maintain that smooth, road like feel. The fluid too is power to and for optimal performance.

It's going to fit 650B, 700C and twenty six inch through twenty nine inch wheel sizes with a tire width of up to 2.25 inches and the whole thing is a three hundred pound weight capacity. Some additional accessories to round out your CycleOps experience, a Bluetooth virtual trainer, part number CY30319, a leveling block, part number CY9702, a riser block, part number CY9701 or a trainer tire, part number CY9710. The CycleOps Fluid2 comes with a limited lifetime warranty. This is also available in a Fluid2 training kit that includes two climbing blocks, a training mat and a sweat guard, part number CY9905 and a Fluid2 power training kit that includes a power tap, power cowl, and a jewel cycling computer to read data, part number CY9906. Now that we've gone over some of the features, I'll go ahead and show you howto get your bike installed on the trainer. We've already got our included skewer installed on our bike here as you can see and we've already got our adjustment set up for our bike here today. Let's grab our bike, we'll set it between our trainer.

We've got three adjustment levels here, so you can adjust it to fit your bike. Let's just lift it up, we'll put this into the skewer end first until it just kind of sets in there like that, then we'll take the bolt action lever and close it up on this end of the skewer until it fits in it just like that and we're going to close it up all the way until it locks into place, just like that. Then, we can come on down to our resistance wheel and we're going to turn this yellow knob clockwise until it clicks two times, that's how we know it's got good and the proper contact that we have on the tire. Just keep turning until you hear those clicks and there we go. Finally, our two feet here at the bottom are adjustable if we're working with an uneven surface. You just give them a slight turn to the left or right and make sure that it's level and that's going to complete our look at the CycleOps Fluid2 bike trainer, part number CY9904..

Customer Reviews

CycleOps Fluid² Turbo Bike Trainer - CY9904

Average Customer Rating:  4.0 out of 5 stars   (2 Customer Reviews)

- CY9904

I have riding this for a week and based on the short time experiences, I think the product works great, way better than the models that providing resistance based on the weight of the rider. 236106

- CY9905

Review from a similar CycleOps Fluid2 in Bike Trainers

Product arrived as described and was fairly easy to set-up. I did a test ride and it will work nicely as an alternative to getting out on the road during the bad weather. Looking forward to breaking it in this winter. 234678


Ask the Experts about this CycleOps Bike Trainers
Do you have a question about this Bike Trainer?

  • Is CycleOps FluidĀ² Turbo Bike Trainer Ready to Use Right Out of the Box
  • The CycleOps FluidĀ² Turbo Bike Trainer # CY9904 comes with everything you will need right out of the box. After set up including mounting the bike you will be ready to go. There are some recommended accessories though. A trainer tire, such as # CY9710 or # CY9711, is recommended if you use a trainer a lot and find that the tire tread is wearing down over time. But these trainer tires are not required.
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Info for this part was:

Expert Research:
Michael H
Video Edited:
Joshua S
Video by:
Dustin K
Photos by:
Amber A
Photos by:
Sam P
Installed by:
Hayden R
Written by:
Matthew S

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