Zoom
Zoom 404163 Adjustable Stem Ahead Clamp Black
★★★★★
Optimize Your Ride with Precision AdjustabilityThe Zoom Adjustable Stem provides a customizable riding experience with its durable construction and precise adjustability. Crafted from 3D forged alloy, this stem ensures strength and reliability while allowing you to fine-tune your handlebar positi...
$30.11*
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*Price sourced from Amazon.com. Last updated:Jul 16, 2026.Price and availability are subject to change.
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Overview
Optimize Your Ride with Precision Adjustability
The Zoom Adjustable Stem provides a customizable riding experience with its durable construction and precise adjustability. Crafted from 3D forged alloy, this stem ensures strength and reliability while allowing you to fine-tune your handlebar position for optimal comfort and control.
- Type: AHEAD-stem
- Material: 3D forged alloy
- Finish: Matt black sandblast with silver sandblast top clamp
- Steerer Tube Diameter: 1.1/8" (28.6 mm)
- Extension: 100 mm
- Bar Bore: 25.4 mm
- Stack Height: 41 mm
Key Features
Aluminium, 3-D FORGED, adjustable from 0° to 60°, for 1.1/8"
Adjustable from 0° to 60°, for 1.1/8", two-part-clamp 31.8 mm oversize
Matt black/silver, 267 g (for 105/70 mm) length a = 125 mm/ b = 90 mm
Specifications
Brand
Zoom
Model
404163
Material
Aluminium, 3-D FORGED
Adjustability
0° to 60°
Steerer Tube Diameter
1.1/8"
Handlebar Clamp Diameter
31.8 mm (Oversize)
Clamp Type
Two-part-clamp
Color
Matt black/silver
Weight
267 g (for 105/70 mm)
Length (a)
125 mm
Length (b)
90 mm
Pros & Cons
👍 Pros
- Offers adjustability from 0° to 60°, providing flexibility in handlebar positioning for rider comfort.
- Constructed from 3-D forged aluminum, ensuring both strength and light weight for cycling performance.
- Features a two-part-clamp design for 31.8 mm oversize handlebars, allowing secure attachment.
- Designed for 1.1/8" steerer tubes, making it compatible with a common bicycle fork standard.
- Available in a stylish matt black/silver finish to complement various bicycle aesthetics.
👎 Cons
- Weighs 267g for the 105/70mm length, which might be heavier than some fixed-angle or carbon fiber stems.
- The specified lengths (a = 125 mm/ b = 90 mm) indicate it is not a universally sized stem, requiring measurement for proper fit.
- Adjustable stems typically involve more moving parts compared to fixed stems, potentially requiring more maintenance.
- While adjustable, the range of 0° to 60° may not cover every rider's desired handlebar angle or position.
- The two-part-clamp design requires careful tightening to ensure even pressure and prevent damage to handlebars.
Frequently Asked Questions
What is the adjustability range of this Zoom Ahead Clamp stem?
This Zoom Adjustable Stem Ahead Clamp offers an adjustability range from 0° to 60°, allowing for a customizable handlebar position.
What material is the Zoom 404163 stem made from?
The stem is constructed from 3-D FORGED Aluminium, which contributes to its durability and lightweight characteristics.
What handlebar diameter is this stem compatible with?
It is designed for 31.8 mm oversize handlebars, secured with a two-part-clamp design.
What is the weight of this adjustable stem?
The stem weighs 267g for the 105/70mm length variant.
Is this stem compatible with all bicycle fork sizes?
This stem is designed for 1.1/8" steerer tubes, which is a common size, but users should verify their fork's steerer tube diameter for compatibility.
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