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Go-Devil UltraLight 40mm Mountain Stem

$125.00 USD

Sale Sold out

Color: forest green

LOCALLY MADE: Engineered, Manufactured, and tested in the backyard of western Pennsylvania's premiere mountain biking trails, the Go-Devil stem is ready to shred the local. They are made from PA sourced, aircraft grade 7075 billet aluminum. Machined in-house by a small team located two miles from North Park, Pittsburgh. Go-Devil weighs in at just 130 grams. Designed in modern CAD-software, Go-Devil has every gram of unnecessary weight removed.

Go-Devil is unlike other mountain bike stems with its top-loading, stepped design. Inspired by the BMX world, Go-Devil's structure is unique for mountain bike stems and doesn't rely on bolts to hold the bars onto the bike. Go-Devil's stepped design only raises stack height by a few millimeters over a traditional front-loading stem.

Go-Devil doesn't require removing your grips, shifter, or brake handles to install.

Available Knock Block compatibility for E-bikes, 35mm Handlebar clamp.

Available anodized locally in forest green, northridge orange, or fast blue.

40mm Reach, Longer Reach Coming November 2025

Our stems are made-to-order in small batches, generally 7-10 days.

Proudly Bringing Manufacturing Back to Pittsburgh.

We aren't a massive company, but we love building high quality, refined custom stuff that our friends will enjoy. Our material is sourced from a local, family owned supplier, we are a small operation, and our friends down the road anodize our stuff. We would love for you to ride on one of our products!

*Mountain biking can be dangerous, use with caution. Don't drop off a cliff.

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Un-standard Design:

After years of development and design, we finally landed on a stem that was strong, light, simple, yet unique. Many prototypes, hours of testing, FEA analysis, and intensive programming have all contributed to Go-Devil's design.

Go-Devil's bar clamps are knurled to eliminate bar slippage without the need to over-torque the clamping bolts.

Proven:

Tested in simulation, on the bench, and most importantly, on the trail.