I’m 5’8” and I have found about 460mm of frame reach is a good size for me with an RR stem.
I’d say the RR stem scales well with current mtb geometry for a wide range of rider heights. Shorter riders have a bike with a rear end that is relatively long, so they need an even higher relative front end height for more leverage to maneuver the bike. Tall riders have a bike with a relatively short rear end, so they don’t need as much leverage, but they do need a better rider position. Combine this with the ability to fine tune height via running spacers above or below the steerer tube mount, and riders using bar rise to match their height, and you should be able to find a height that works for you and your bike perfectly.
As far as needing to stretch to a super long wheelbase, you should be able to stay on the frame size you are on if you feel it fits you well. The raised height of the RR stem pairs perfectly with the closer hand position from the reversed offset so that you don’t need to upsize your bike. Typically to have a good arm angle and bend in good form, you’re hinged forward at the hips such that your back is fairly horizontal. With the more upright position, you don’t need to account for as much horizontal torso length in the cockpit. At 5’8” and I’ve tested it on bikes with reaches from 438mm to 500mm, and I am always faster and in more control with an RR stem.
I appreciate the support, this is just the first of many things I have designs for. 🙂 Follow BeMoreBikes on Instagram at
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April 16, 2022, 1:03 a.m. - BeMoreBikes
I’m 5’8” and I have found about 460mm of frame reach is a good size for me with an RR stem. I’d say the RR stem scales well with current mtb geometry for a wide range of rider heights. Shorter riders have a bike with a rear end that is relatively long, so they need an even higher relative front end height for more leverage to maneuver the bike. Tall riders have a bike with a relatively short rear end, so they don’t need as much leverage, but they do need a better rider position. Combine this with the ability to fine tune height via running spacers above or below the steerer tube mount, and riders using bar rise to match their height, and you should be able to find a height that works for you and your bike perfectly. As far as needing to stretch to a super long wheelbase, you should be able to stay on the frame size you are on if you feel it fits you well. The raised height of the RR stem pairs perfectly with the closer hand position from the reversed offset so that you don’t need to upsize your bike. Typically to have a good arm angle and bend in good form, you’re hinged forward at the hips such that your back is fairly horizontal. With the more upright position, you don’t need to account for as much horizontal torso length in the cockpit. At 5’8” and I’ve tested it on bikes with reaches from 438mm to 500mm, and I am always faster and in more control with an RR stem. I appreciate the support, this is just the first of many things I have designs for. 🙂 Follow BeMoreBikes on Instagram at [BeMoreBikes Insta](Instagram.com/BeMoreBikes "BeMoreBikes Insta") for updates.