Promax Impact Stem
Best lightweight stem for competitive BMX racers and freestyle riders.
A straightforward, reliable top-load stem built for the demands of BMX. It prioritizes structural integrity through a cold-forged and CNC-machined construction, offering a solid, lightweight connection for your cockpit without unnecessary complexity.
$49.99
at
Tree Fort Bikes
More Impact options
Who it's for
- Aggressive BMX racers needing reliable, high-impact equipment
- Performance riders seeking precise handling and front-end stiffness
- Weight-conscious racers wanting strength without excess bulk
Who should skip it
- Budget-focused riders looking for entry-level pricing
- Commuters or mountain bikers needing versatile, multi-purpose components
- Aesthetic-driven cyclists preferring sleek, minimalist bike designs
Performance breakdown
Structural Rigidity
Cold-forged aluminum provides exceptional stiffness for aggressive BMX maneuvers.
Weight Efficiency
CNC-machined cutouts shed excess material without compromising critical strength points.
Clamping Security
Four-bolt faceplate design ensures handlebars stay locked during high-impact landings.
Installation Simplicity
Standard threadless design makes swapping or upgrading your cockpit straightforward.
Finish Durability
Anodized coating resists scratches and maintains a clean look over time.
Safety Compliance
Exceeds rigorous ENBMX standards for peace of mind during intense riding.
Key Specs
Stem Length
53 mm
Handlebar Clamp Diameter
31.8 mm
Steerer Tube Clamp Diameter
28.6 mm
Stack Height
30.0 mm
Material
6061-T6 Aluminum
Weight
284 g
Stem Type
Threadless
Intended Use
BMX
Construction Method
Cold forged and CNC-machined
Number of Bolts
4
Know before you buy
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Ask Metto anything about the Promax Impact Stem before you decide.