Crankbrothers Stamp Trail BOA Flat Shoe Review

The switchbacks were starting to hurt a little, but I settled into the long haul, timing my pedal strokes and applying a burst of energy with each techy rise in the trail. The trail was dusty, moondust; Colorado has been Dry. Capital D. But the torque in my pedaling kept getting the job done. One grippy connection after another, I felt confident. It was my third ride with the Stamp Trail BOA Flat Shoes, and they were impressing me more and more.

As a gal who prefers flats and the freedom to bail quickly, I’m forever seeking a one-quiver mountain bike shoe. My tried-and-true has been my Five Ten Freerides. Downhill, park, freeride, all-mountain, and yes, even trail cross-country. But I’ve been looking for something that crosses over a little better, built more for the trail but can perform in the park. Something a little more technical.

I want something grippy, secure, and supportive for sustained descents in the Snowmass Bike Park, and lightweight and breathable for cross-country and trail riding throughout Colorado’s Roaring Fork Valley.

In short: Flat pedal shoes generally ask you to compromise somewhere with grip, comfort, walkability, or pedal precision: The Stamp Trail BOA Flat Shoes try to deliver all four. These mountain bike shoes are a responsive, lightweight trail flat with a techy fit and a sticky outsole. Though they have a steeper price point, every component of the shoe feels thought out.

The neoprene cuff or collar on the heel is comfy and keeps dust out, and the BOA and Velcro closure system is bomber. The high-friction MC2 rubber compound on the sole is extremely grippy, and the shoe is just stiff enough with a bit of a rocker in the toe.

Crankbrothers Stamp Trail BOA Flat Shoe Review

About the Stamp System

Crankbrothers’ Stamp line is built to optimize the shoe-to-pedal connection from the ground up. The Match System takes the Stamp shoes and pairs them with the brand’s Stamp flat pedals, with both the shoe and pedal designed around the same MC2 (super-sticky) rubber compound and Match outsole pattern. Think super-wide, spikey pedals with the goal being mutual grip.

Matching pedals aside, Stamp Flat Shoes (there are three: a Flat, Trail Flat, and Street Flat) can and should be compatible with all flat pedals. Or at least that’s what I wanted to find out. Even if you don’t have their pedals, the tread pattern with the ramped toe and heel lugs is designed to work with any pedal, not just their own. I have the Race Face Chester pedals, and I gave them a go.

Where I Tested

I logged miles across several systems in the Roaring Fork Valley. Dusty climbs on North Rim Trail and the aspen-shaded flow on Government Trail in Snowmass. Rocky, rooty technical lines and berm-heavy freeride routes in the Snowmass Bike Park. The 3-mile road ascent and 4 miles of freeride swoops on Grandstaff in Glenwood Springs. And a few heat-of-the-day sessions on Carbondale’s Prince Creek trail system, weaving between Undie, Father Ginormous, and generally opting for the Freeride over the Jump Line routes.

Comfort and Fit

The first thing I noticed while pulling these shoes on was the heel. It’s soft and padded, collapsing naturally as you slide your foot in, which makes the experience feel more like pulling on a trail runner than a bike shoe. The elastic collar keeps debris out without squeezing the ankle, a nice detail when you’re hiking your bike through technical sections.

I have a more narrow, women’s size 7.5 foot, and the shoes are unisex. I kept coming back to how comfortable the fit was, especially on longer rides. “Bye-bye, shoelaces,” I thought a time or two. The BOA Li2 dial, combined with the hook-and-loop strap, gives you a really dialed-in fit. I like the feeling of cinching everything down for a responsive, locked-in feel without the shoe putting pressure on any one part of my foot.

It’s not necessarily a con, but one thing to note as a flat-footed rider: the Stamp Trail BOA lacks some arch support, which I noticed by the end of longer downhill sections. But this is often the case with flats. You’re trading that support for a flat, stiffer sole that keeps you connected to the pedal.

Trail Toughness and Traction

Breathability pleasantly surprised me, especially on the hot, dry, midday climbs that are a fact of life in the Roaring Fork Valley in July. The ripstop upper doesn’t trap heat; it’s durable and lightweight, although the ripstop construction does collect a lot of dust, just making them look dirty.

On the descents, the grip held up well. I felt solid through cornering turns and on steeper lines, and I didn’t get bucked off the pedals when catching minor air. The MC2 compound and Match outsole do their job, and the stiffness zones in the outsole give you a direct, clipped-in feel without killing the flexibility at the toe.

At one point, I dismounted and walked my bike down a steep, sketchy, and loose section of trail. It’s in the moments when you’re just hoping the banana-peel effect doesn’t take you down, but sure enough, my footing felt solid, adding to the agility needed to climb down.

Verdict

While the price point is on the higher side, I think they’re an awesome all-around flat shoe that is comfy right out of the box. If you’re a flat pedal rider looking for something you can take from mellow singletrack to technical descents without compromising too much in any direction, the Stamp Trail BOA Flat is worth a real look.

It’s light, breathable, comfortable on and off the bike, and the BOA fit system adds a level of stability and tech we lose with flats. The lack of arch support may be a limiting factor for all-day downhill use, and the construction does collect a lot of dust, but for trail riding and mixed-terrain days, these do the job.