Mountain Bike Reach Calculator. Don't end up with the wrong size bike. This is arguably the most important figure for mountain bike fit because it affects the length of your bike's cockpit when you're standing on the pedals and how much range of motion in your hips you'll use up in.
It is typically the opposite in modern mountain bikes these days with more emphasis on 'long/low' so the reaches are very high, but stacks are much lower than my custom frame.. On my custom mountain bike my stack is very high and reach is low. Bike Sizing is intended to assist you select a bike that has a frame size and shape that is appropriate for your anatomical proportions, riding style, and physical condition – including flexibility and any relevant injuries.
Whilst stack and reach is a valuable tool in working out the correct size for a bike, it's arguably even more useful in replicating a bike fit from one bike to the next.
Toggle help The calculated reach and stack values are only approximate values.
This is arguably the most important figure for mountain bike fit because it affects the length of your bike's cockpit when you're standing on the pedals and how much range of motion in your hips you'll use up in. A bike of an appropriate size is a precursor to establishing a good bike fit. Far better to be on a bike with a sufficiently long reach in the first place.