Box One Stem Lock
Best safety upgrade for aggressive riders seeking extra fork security.
This component provides a vital safety net for the front end of a bicycle. It ensures the fork and wheel remain attached even if the steerer tube suffers a catastrophic failure, offering essential peace of mind for high-intensity riding.
$34.99
at
Full Tilt Bike Co
More Box One options
Who it's for
- Carbon fiber bike owners protecting delicate steerer tubes
- Mechanics seeking hassle-free headset maintenance
- Weight-conscious riders prioritizing a minimalist cockpit
Who should skip it
- Budget-focused cyclists building entry-level bikes
- Aggressive riders demanding absolute, fail-safe component security
- Cyclists with short or non-standard fork steerer tubes
Performance breakdown
Structural Integrity
Cold-forged aluminum construction offers exceptional resistance to high-stress riding conditions.
Installation Versatility
Adjustable length ensures a precise fit across diverse fork setups.
Safety Redundancy
Provides a critical fail-safe mechanism against catastrophic steerer tube failure.
Compatibility Range
Broad design accommodates most standard 1.5-inch steerer tube configurations.
Build Precision
CNC machining delivers tight tolerances for a secure, rattle-free connection.
Ease of Adjustment
Straightforward design makes fine-tuning the fit simple for home mechanics.
Key Specs
Material
7075-T6 and 2014-T651 aluminum alloy
Compatibility
1.5-inch steerer tubes
Construction
Cold forged and CNC-machined
Lock Type
Stem Lock
Inner Diameter
38.1 mm
Adjustable Length
166mm to 230mm
Component Application Area
Fork
Quantity per pack
1
Bike Type Compatibility
BMX
Know before you buy
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