The Kreitler Alloy Rollers is an ideal method of resistance training in compact, portable package. For almost 40 years, Kreitler has been producing some of the smoothest and quietest rollers on the market. Some would say Kreitler Rollers are the "Rolls Royce" of rollers; beautifully machined while offering the best combination of resistance, cost, and portability. Kreitler rollers will simultaneously allow you to increase your cadence, increase power, and improve your form all while helping you develop better balance and technique. Regardless of your current skill level, there is a Kreitler roller system that will help you become a better cyclist.
Kreitler rollers are offered in several different drum diameters; as the drum diameter decreases, the resistance of the roller system will increase due to the bearing and tire friction. At any given speed, a smaller drum will need to rotate at a faster RPM than larger drums, causing more friction in the bearings which ultimate producing higher resistance.
The Alloy series of Kreitler rollers use the same standard Kreitler frame as the Challenger series, the only difference being the use of alloy end caps in place of polycarbonate ones. Although heavier than polycarbonate, alloy end caps are longer lasting and create more momentum in the rollers. The Kreitler Alloy 4.5 is the best option for those new to training with roller systems as it offers the least amount of resistance while the Kreitler Alloy 3.0 Rollers provide 40% more resistance compared to the Alloy 4.5, making it a good option for those seeking a more intense training session.
Kreitler Alloy Roller System Features
Standard Kreitler Frame (15" wide drums with extension kits available for bike with a wide wheelbase)
Compatible with Kreitler Headwind Fan and Flywheel accessories*
Manufacture Part Numbers: KT-13000 (3.0), KT-10003 (4.5)
Please Note: Use of the Kreitler Headwind Fan or Flywheel accessories on 3.0 and 2.25 drum sizes will cause premature wear on the poly end caps, which is NOT covered under the lifetime warranty. If you are planning on using either of these accessories with your Kreitler roller system, alloy end caps are recommended.
This review is for the 3" alloy set. Nice quality rollers, smooth rolling, quiet, but still produces some harmonics/vibrations at certain speeds. I would expect these rollers with the alloy caps to last a very long time. I have a set with plastic end caps that cracked (from a different manufacturer), so drums with metal end caps are the only ones I will ever buy again. This was very important for me when deciding on a new set of rollers.
My biggest complaint is that there was not enough resistance without having to add the fan unit. I had originally decided on the 3" after looking at the wattage chart on Kreitler's website as well as their claim that the 3" has 40% more resistance than the 4.5". I was disappointed by how easy it was and I know that my wattage levels were nowhere near what the table claimed. This forced me to either return the unit and cover the return shipping, or fork over another 200.00 for the killer headwind fan. Since these things were already expensive, I was already at my budgeting limits and ended up reluctantly returning the rollers.
Another thing to note, the instructions stated to derail the belt after each use, otherwise it will stretch. I found this to be a bit of an inconvenience, but certainly not a deal breaker.
While these rollers did not work for what I intended to use them for (resistance training), they may be just fine for someone who just wants some easy spinning, or to use for race warm ups or recovery rides. I know that many people use trainers for resistance workouts, but for me, I find that rollers with resistance allows me to get a great workout in while at the same time work on my balance and smoothness of cadence/pedal stroke.
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