Ampler Sizing: Reading Curt and Nova Height Recommendations

Ampler sizing begins with the chart for the exact model, then continues with a practical assessment of the rider and bicycle together. Matching a height interval is useful, but it does not establish reach, comfort or ease of mounting. This guide compares the manufacturer’s published Curt and Nova low-step recommendations. The Ampler reference collection provides the surrounding model context.

Ampler sizing ranges are model-specific

The Curt product page recommends S for riders 160–172 cm tall, M for 173–185 cm and L for 186–198 cm. The Nova low-step page gives the same S and M intervals, but extends L to 200 cm. These are the published height recommendations checked for these pages, not universal measurements for every Ampler generation.

The different upper boundary is a small but useful reminder to avoid transferring a chart between models. Likewise, a seller’s statement that a bicycle is “medium” should be checked against the frame’s identification and the documentation for that particular version.

If your height falls close to a boundary, record the exact measurement rather than rounding it to fit the preferred label. The chart does not provide a complete answer for every body proportion, and the gaps between printed intervals should not be filled with an invented manufacturer rule.

Assess the riding position before planning component changes

During a fit check, evaluate whether you can reach the controls comfortably, steer through a slow turn and start and stop with confidence. Spend enough time riding to notice whether your shoulders remain relaxed. Make these observations on the configuration you would actually use, including the fitted saddle and handlebar.

Also practise getting on and off. A low-step frame choice addresses a different practical question from frame size: how you mount the bicycle. Do not assume that easier access automatically resolves reach or saddle positioning.

For a used bicycle, note any changed stem, handlebar or seatpost before comparing the experience with the published model description. Ask a competent fitter or workshop to assess adjustment options rather than assuming an unusually long or short replacement component will correct an unsuitable frame.

If you are choosing between the comfort models, our Nova versus Nova Pro comparison explains the manufacturer’s different posture concepts. Use that distinction to organise a fitting session, while keeping size and personal comfort as separate questions.

FAQ: Reading the height charts

Do Curt and Nova low-step have identical height recommendations?

The cited pages agree for S and M. Their L recommendations differ: Curt ends at 198 cm and Nova low-step at 200 cm.

Does being inside the range guarantee a comfortable fit?

No. The range is an initial recommendation. Reach, contact points and the rider’s practical experience still need assessment.

Can I use this chart for an older Stellar or Axel?

Do not transfer it automatically. Find the documentation for that model and year rather than assuming a shared size label describes the same fit.

Use Ampler sizing to select a sensible starting point, then verify the actual riding position and mounting experience. A documented size and a comfortable, controlled trial provide more useful evidence together than either one alone.