KREITLER Alloy Rollers for Indoor & Outdoor Bike Training | Premium Cycling Trainer | Smooth, Quiet Ride w/Easy Storage

The Alloy models feature the all aluminum drums and end caps that are beautifully machined and perfectly balanced. These are the quietest and smoothest rollers on earth. As the diameter decreases, the resistance increases. 3.0-Inch has 40-Percent more resistance than 4.5-Inch while 2.25-Inch has 90-Percent more resistance than 4.5-Inch.

• MASTERFULLY MACHINED DRUMS: Features aircraft-grade 6061 alloy drums turned on a CNC lathe to within two thousandths of concentricity for perfect balance. This precision construction provides the smoothest and quietest ride available on a roller system.
• INSTRUMENT QUALITY BEARINGS: Built with high-grade sealed cartridge shield bearings that allow the drums to spin effortlessly. These quality components are designed for decades of use and consistent performance in a training environment.
• QUALITY STEEL FRAME: Includes a durable steel frame welded in exacting fixtures and finished with a black epoxy powder coat. The frame folds easily for storage and transport, making it a portable solution for race-day warmups.
• TOOL-FREE ADJUSTABILITY: Designed to easily change the wheelbase with no tools necessary to accommodate different bicycles. The frame is built to be a simple, heavy-duty foundation that stays stable during high-cadence efforts.
• PERFECT FOR: Serious cyclists and competitive athletes who demand a premium, masterfully balanced training tool designed to last for decades. Ideal for riders who prioritize mechanical precision and want to improve their pedaling fluidity and balance.