Kreitler

Frequently Asked Questions

• Which Kreitler roller model is best if I need something portable for travel versus a serious trainer for regular indoor workouts?

  Kompact and Kompact Hot Dog rollers are built for portability: they fold compactly and the Hot Dog drums (10" wide) prioritize maximum transportability and added balance challenge. Alloy Rollers are the standard full‑size option for serious trainers, offering a stiffer frame, full accessory compatibility (including the Flywheel) and broader drum options for varied resistance.
• How do I choose between 4.5", 3.0", and 2.25" drums for resistance and workout intensity?

  Choose drum size by your typical riding speed and desired resistance: 4.5" drums give the lowest resistance and are ideal for balance work or higher wheel speeds, 3.0" drums provide about 40% more resistance and suit most riders averaging under ~20–25 mph, and 2.25" drums offer roughly 90% more resistance for high‑speed riders and sprint intervals. If you want more progressive load without changing drums, consider pairing a drum with the Headwind Fan or Killawatt Resistance Unit.
• How do Kreitler Alloy Rollers compare to Kompact Rollers?

  Alloy Rollers use a full‑size standard frame that accepts all drum sizes, the Flywheel, and accessories, making them better for stationary training and heavier use; Kompact Rollers fold for travel, are available in 2.25" and 3.0" drums, and are limited to wheelbases ~38–42". The Kompact frame increases portability but sacrifices Flywheel compatibility and some accessory options, so choose Alloy for versatility and Kompact for transport.
• What do the Headwind Fan, Killawatt Resistance Unit, and Flywheel do for a workout on Kreitler rollers?

  The Headwind Fan provides adjustable air resistance that simulates headwinds and climbs, the Killawatt Resistance Unit adds smooth, quiet magnetic resistance for structured intervals, and the Flywheel increases rotational inertia for a more road‑like feel and harder accelerations. Note that the Flywheel is not compatible with Kompact frames, while standard frames accept all three accessory types.
• How do I know if my bike will fit Kreitler rollers and what measurements should I check?

  Measure your bike’s wheelbase first: Kompact frames fit roughly 38–42" wheelbases, while standard Kreitler frames accommodate a much wider range and offer extension kits for recumbents and tandems. Also confirm tire width fits the chosen drum width (standard 15" drums accept most setups; Hot Dog 10" drums are narrower) and ensure your bike can safely sit on a folding frame before purchase.