Paul Components Boxcar Stem
Best premium upgrade for riders seeking exceptional durability and industrial style.
This is a masterclass in CNC machining that prioritizes raw structural integrity over lightweight trends. You get an incredibly stiff, responsive front end that feels rock-solid on the trail, though you’ll have to accept a slightly heavier build than the carbon-fiber alternatives.
$156.00
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Who it's for
- Custom bike builders seeking high-end American-made components
- Aggressive trail riders prioritizing steering precision and component longevity
- Home mechanics who value durable fasteners and easy maintenance
Who should skip it
- Budget-conscious cyclists looking for basic functional performance
- Riders requiring highly specialized or unconventional stem lengths
- Traditionalists preferring a classic, sleek, or aerodynamic look
Performance breakdown
Torsional Rigidity
The boxy profile eliminates flex during aggressive out-of-the-saddle climbing efforts.
Machining Precision
CNC tolerances are exceptionally tight, ensuring a perfect interface with handlebars.
Hardware Durability
Stainless steel Torx bolts resist stripping far better than standard hex heads.
Weight Efficiency
Solid construction prioritizes strength over being the lightest option available.
Aesthetic Appeal
The raw, machined finish offers a timeless, industrial look for custom builds.
Maintenance Ease
Simple four-bolt faceplate design makes handlebar swaps quick and straightforward.
Key Specs
Stem Length
80 mm
Stem Angle
7 degrees
Steerer Tube Clamp Diameter
28.6 mm
Handlebar Clamp Diameter
31.8 mm
Stack Height
36 mm
Material
2024 Aircraft Aluminum
Stem Type
Threadless
Construction Method
CNC Machined
Removable Faceplate
Yes
Adjustable Angle
No
Know before you buy
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