Gear Reviews

8 great indoor trainers when you have to ride inside

From entry level to premium, these bad weather beaters will keep you riding

Editor’s Note: This article is part of the Mtbr Ultimate Guide to winter mountain biking. We are taking a deep dive into all manner of cold weather mountain bike gear, with round-ups and reviews of fat bikes, tires, wheels, apparel, lights, trainers and more. To see all the articles, head over to our Winter Guide Hub Page.

With hundreds of options to chose from, it can be hard to narrow down your shopping list when searching for a trainer. To help make that decision a little easier, here in no particular order are eight of the top trainers currently on the market. And if you’re confused about the technology that sets these trainers apart, check out our guide to picking the best trainer for you.

The CPR A-2000 can accommodate 16”-29” tires without special adapters.

The CPR A-2000 can accommodate 16”-29” tires without special adapters (click to enlarge).

1. 1upUSA CPA-2000

The 1upUSA CPR A-2000 has won multiple awards due to its quiet performance, incredible adjustability, and compact nature. The sturdy unit is only 6” thick when folded and is entirely built in the USA. | Price: $309 | More info at

The free version of Bkool's software offers powerful tools, but the premium service unlocks a 3D world, video routes, and more.

The free version of Bkool’s software offers powerful tools, but the premium service unlocks a 3D world, video routes, and more (click to enlarge).

2. BKool Smart Pro

What sets the Smart Pro apart from its competitors is the powerful fusion of software and hardware. Bkool’s Indoor Simulator technology allows you to import GPS files to replicate any route in the world. You can also plug in your (or anyone else’s) previous ride performances, to see how you compare in real time. | Price: $699 | More info at

CycleOps shares a roof with PowerTap, which enables them to work closely in order to hone in the accuracy of trainer resistance.

CycleOps shares a roof with PowerTap, which enables them to work closely in order to hone in the accuracy of trainer resistance (click to enlarge).

3. CycleOps PowerSync

Compared to the other electronic-enhanced trainers on this list, the PowerSync is relatively affordable. Like its competitors, it allows you to sync your computer or TV to utilize virtual training software such as Zwift. For those on a budget however, the CycleOps Fluid 2 is their perennial best seller. It retails for $350. | Price: $899 | More info at

The Cyclotron Mag II offers reliable performance at a reasonable price.

The Cyclotron Mag II offers reliable performance at a reasonable price (click to enlarge).

4. Giant Cyclotron Mag II

If you’re not obsessed with data, Giant’s Cyclotron II magnetic trainer has everything you need to get a solid workout indoors at a reasonable price. The magnetic trainer is quiet and has seven resistance levels, which you can swap between via a handlebar mounted thumb shifter. | Price: $180 | More info at

Continue to page 2 to learn about four more great trainers »
About the author: Jordan Villella

Jordan comes from the steep streets of Pittsburgh PA, where he learned to dodge cars and rip single track. He has been involved in nearly every aspect of the cycling industry: from turning wrenches, store design, clothing production and bike park creation. Jordan spends his free time racing cross country and cyclocross around North America, though he has been know to enduro every now and then. His love of cycling is only second to his love of his family and punk rock.

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  • Ben says:

    Can it be used in a tire that was previously running latex or other sealant or does it have to be a new tire?

    • Simon says:

      Hi – I’m a roadie (sorry), but can answer that. I recently tried to prolong the life of my Mavic UST yksion tubeless – my rear tyre had picked up a load of flint cuts through a bad winter and over about 2k miles. It had a number of slow punctures, some of which I could see and were sealing themselves with the Mavic own brand latex sealant, and others weren’t. I wasn’t sure what volume was left given they tyres had been on the wheel for about 5 months, so I added some of the Finish Line Kevlar stuff. If anything, I think this made the air loss worse (still nothing that would instantly kill a ride, but deflation over a 12hr+ period). So I removed tyre, removed the obvious traces of latex and hosed it off. Reinstalled with Finish Line Kevlar stuff. More difficult to seat the tyre this time round (probably because it was having to re-fill all the re-opened holes), but with a shot at c.140psi it was fine. The next two rides it spat a few mls of the fluid out over my seatpost, but no kevlar bits emerged, and no noticeable air loss. So thus far it looks like a) the Finish Line stuff is working, and b) you definitely need to make sure your tyres are a latex-free zone before you use it. I’m now certain to gain a catastrophic blowout / valve leak on the way home having said all that…

  • Joseph Graf says:

    Looks like it is probably the same stuff. This is from the Amazon questions and answers section: For off-road motorcycle tires you can use our MULTI SEAL Sportsman Formula.
    For mountain bike tubeless tires, pick up MULTI SEAL’s bicycle formula. Ask your local bike shop for Finish Line Tubeless Tire Sealant.
    If you have any further questions, please do not hesitate to call 1-800-577-3353 to talk with someone on our technical team or send an email to

  • Nick says:

    Just spoke to the guys at Multi Seal and apparently they worked with Finish Line to develop the product for Mountain Bike use. They stated that the ratios of the fibers are different than their Sportsman products (e.g. ATV’s, etc…). He said that the biggest challenge was the air volume of MTB tires being so different than their other applications. He recommended using the Finish Line product for MTB use and not to purchase the Multi Seal product.

  • BK says:

    Very cool. Along with all my mountain bike tires, this may get me to switch over to tubeless on my road bike as well.

  • DWM says:

    I like FlexSeal. I can use it in my gutters too…

  • Coyote W.E. says:

    Got it a week ago.
    Got it on Race King (rear) and Schwalbe Racing Ralph (front).
    A large screw was removed, lost 50% of the sealant but got back on the bike for another 15 miles. (in 10 minutes. No pump or any action was requiered. Tyer pressure remains)
    No issues, clean and works perfectly.
    Highly recommended.

  • willie goat says:

    I tied the stuff today on a new Nobby Nic and it never held air completely. Thought maybe riding would help, but 10 miles in, flatted, re=inflated, was almost flat at the end of the ride. Going back to Stan’s.

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