Stack — every audited bike, ranked

Stack is the vertical distance from the bottom-bracket centre to the top of the head tube. It captures how upright the front end is before any spacers, and it is the most reliable single number for comparing rider posture across brands.

Highest Stack in the catalog

Lowest Stack in the catalog

How to read this metric

Across 56 audited models the Stack ranges from 523 mm to 634 mm, with a mean of 573 mm and a median of 574 mm. The mean and median agree closely, which tells you the catalog is not skewed toward an extreme of the distribution — most modern bikes target the middle, and the leaderboard above lets you see who deliberately steps outside it.

The current high-watermark is the Trek Checkout 2026; the current floor is the Winspace T1600 2026. Tall stack favours endurance positions, long days in the saddle, and riders who lack the hip mobility for an aggressive drop. Short stack favours race fits, aerodynamic positions, and riders who want to set bar height with spacers rather than have it dictated by the frame.

Distribution by bike type

This per-discipline breakdown is the more honest comparison: comparing an XC hardtail's Stack to a road frame's is a category error. Use the type rows to find the right peer group, then drill into individual bikes from the leaderboards above. Each bike row links straight to its full geometry page on RideDNA, where you can run a side-by-side against any other audited frame.

If you want to filter on multiple metrics at once, the filter tool lets you set ranges on stack, reach, HTA, trail, wheelbase and chainstay simultaneously and returns every bike that satisfies all the constraints. The discipline pages apply pre-baked filters by riding style, which is the fastest way in if you already know what you ride.

Caveat. Published geometry charts are not all drawn the same way. Some manufacturers publish stack at the top of the head tube exclusive of any integrated headset cap; others publish it at the top of the cap. RideDNA reconciles these to a common reference where possible (see the methodology page for the corrections we apply), but for any single bike you should still treat the chart as ±2 mm uncertainty before you stack-spacer-shop. The relative ordering on this page is more reliable than the absolute values.

Related geometry pages

• Reach
• Head Tube Angle
• Mechanical Trail
• Wheelbase
• Chainstay Length
• Bottom Bracket Drop
• Full geometry glossary
• Compare two specific bikes
• Handling Index methodology