FIFTY-FIFTY Aluminium Alloy MTB Stem 35mm Short 0° — 31.8mm Clamp, 132g Lightweight CNC

FIFTY-FIFTY's Aluminum Alloy Mountain Bike Stem is a full-machined 6061T6, 35mm, 0° short stem that weighs just 132g and secures 31.8mm handlebars with a four-bolt face plate.

This compact stem was developed for riders who want a stiffer, lighter cockpit without radically changing bike handling. Engineered using CNC machining and finite element analysis (FEA), the stem trims every unnecessary gram while keeping the clamp areas robust. It fits standard 1-1/8" (28.6mm) steerer tubes and 31.8mm handlebars, making it a direct swap for many modern mountain bikes.

How does the short 35mm length change steering and handling?

A shorter stem reduces leverage on the front wheel, sharpening steering response and making the bike feel more agile on tight trails. The 0° rise maintains your current bar height while bringing your hands closer to the front axle for quicker input. This is useful when technical trail sections demand faster corrections.

• Length: 35mm for quicker, more responsive steering
• 0° rise preserves existing handlebar height
• Improves front-end traction through faster rider input

What makes this stem reliably light yet strong?

FIFTY-FIFTY mills the stem from 6061-T6 aluminum and refines the shape with CNC machining and FEA to remove excess material without compromising safety. The full-machined construction yields a controlled wall thickness and clean stress-relief geometry at clamp zones. The result is a product that balances minimal weight with necessary stiffness.

• Material: 6061-T6 aluminum, full machined for structural integrity
• Manufacturing: CNC machining plus FEA-driven design optimization
• Weight: Only 132g (4.65 oz.) for a performance-focused setup

Is installation straightforward and secure?

The stem uses a four-bolt face plate and a close-gap design to simplify handlebar clamping while allowing correct bolt torque. The 31.8mm bar clamp and 28.6mm steerer fit standard sizes, so no special adapters are required. Proper torque and a cross-pattern tightening sequence keep the bar locked without over-stressing the alloy.

• Bar diameter: 31.8mm clamped by a four-bolt face plate
• Steerer fit: 28.6mm (1-1/8") standard fitment
• Close-gap face plate helps even clamping and easier installation

Which bikes and riding styles work best with this stem?

The short, stiff layout suits trail, enduro, and aggressive cross-country riders who favor nimble handling and quick front-end feedback. It’s also a good choice for riders swapping from a longer stem to improve maneuverability on technical singletrack. Because it's a neutral 0° stem, it keeps stack height unchanged, so cockpit fit changes are predictable.

• Ideal for trail, enduro, and technical XC where steering agility matters
• Direct replacement for standard 1-1/8" steerer and 31.8mm bars
• Neutral rise means no unexpected changes to bar height

Who is this for? Riders who want to reduce weight in the cockpit and sharpen bike handling without altering bar height will appreciate the FIFTY-FIFTY 35mm stem. It’s aimed at cyclists upgrading components for performance gains—whether you’re tuning a race bike or adjusting a trail rig for tighter lines. Fit is straightforward for most modern mountain bikes, and the machined aluminum finish complements performance-focused builds.

Key specifications: 6061-T6 aluminum, full machined, 35mm length, 0° rise, 28.6mm steerer, 31.8mm handlebar clamp, four-bolt face plate, weight 132g (4.65 oz.).