Easton EA50 Stem 31.8 – 90mm – ±17°
The Easton EA50 Stem 31.8 90mm ±17° is a lightweight, durable alloy stem used to fine-tune handlebar reach and riding position on road, gravel, XC MTB, and commuter bikes.
It’s part of Easton’s EA50 range, known for offering solid performance at a good value.
What It Is
A forged aluminium stem that connects your handlebars to your fork steerer tube. The 90mm length gives a slightly longer reach than 80mm, making it popular for riders who want:
- More stretched-out road position
- Better stability at speed
- A more “open” cockpit feel on XC/gravel bikes
The ±17° angle lets you flip it for either a more aggressive or more upright position.
Key Features
- 3D forged EA50 aluminium construction for strength and stiffness
- 31.8mm handlebar clamp (modern standard size)
- ±17° reversible rise for fit adjustment
- TopLock faceplate for secure bar clamping
- Compatible with carbon and alloy handlebars
- Available in multiple lengths (70–120mm range)
Specifications
- Length: 90mm
- Bar clamp: 31.8mm
- Steerer: 1 1/8” (28.6mm)
- Angle: ±17°
- Material: EA50 forged aluminium alloy
- Weight: ~140g (varies slightly by model)
- Use: Road, MTB XC, gravel, commuting
Pros
- Strong and reliable for aggressive riding
- Good balance between stiffness and weight
- Adjustable angle for bike fit tuning
- Widely available and easy to replace
- Works with most modern handlebars
- Good value for performance level
Cons
- Not ultra-light (heavier than carbon stems)
- Basic aesthetics compared to premium stems
- 90mm may feel long for modern short-reach MTB setups
- No integrated mounts on all versions
Who It Is Suitable For
- Road cyclists wanting stable handling
- XC MTB riders needing a longer reach
- Gravel riders dialing in comfort and control
- Riders replacing OEM stems with something more adjustable
Who Should Use It?
You should choose this stem if you:
- Need a slightly longer reach (vs 80mm)
- Want a solid, low-maintenance alloy stem
- Are fine-tuning your bike fit (upright vs aggressive position)
- Ride mixed terrain and want stability at speed
- Prefer durability over weight savings
Bottom Line
The Easton EA50 90mm ±17° stem is a reliable, no-nonsense cockpit upgrade. It’s not flashy, but it’s strong, consistent, and very easy to dial into your riding position.
If you’re between 80mm and 100mm stems, the 90mm version is often the “sweet spot” for balanced handling.
