MEROCA Four-Link Suspension Stem

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Universal suspension stem for road/cross-country/gravel bikes. Say goodbye to bumpy rides and enjoy a comfortable and relaxed ride every time.

I. Core Product Information

Product Name: Four-Link Suspension Stem (Bicycle Seat)

Main Material: High-strength Aluminum Alloy

Handle Diameter: 31.8mm (Universal Standard Diameter)

Fork Diameter: 28.6mm (Standard Mountain/Road Fork Diameter)

Angle: 7°

Length: 90mm

Height: 45mm

Travel: 15-20mm

Weight: Approx. 485g

Suitable for: Gravel road bikes, mountain bikes, city commuter bikes, long-distance riding

II. Core Technical Highlights

1. Four-link suspension structure for efficient bump absorption

Unlike ordinary stems, this model employs a professional-grade four-link mechanical structure with a built-in spring damping system. This effectively absorbs the shock and vibration from road debris, potholes, and steps, significantly reducing hand and wrist fatigue and making long-distance riding and unpaved road riding more comfortable without compromising handling stability.

2. Four-Level Adjustable Springs for All-Terrain Needs

Comes with four different spring stiffness levels, allowing for flexible switching based on riding scenario and rider weight:

Level I (Yellow): Suitable for lighter riders/urban commuting, smooth roads, providing softer and more comfortable shock absorption.

Level II (Blue): Suitable for everyday leisure riding, light gravel roads, balancing comfort and support.

Level III (Red): Suitable for medium-weight riders/frequent off-road riding, challenging terrain, offering stronger support.

Level IV (Green): Suitable for heavier riders/high-intensity off-road riding, bumpy roads, providing stable shock absorption without bottoming out.

A built-in preload adjustment knob on the top allows for fine-tuning of the shock absorption stiffness, enabling versatile use without additional modifications.

3. High-Strength Aluminum Alloy Body, Lightweight and Durable

Utilizing a forged aluminum alloy unibody molding process, the body boasts high strength and rigidity while maintaining a reasonable weight, ensuring a comfortable ride even during extended periods. The surface undergoes a wear-resistant anodizing treatment, making it scratch-resistant and corrosion-resistant, unaffected by harsh outdoor environments, and ensuring a longer service life.

4. Universal Installation Specifications, Compatible with Most Bike Models

Handlebar clamp 31.8mm, compatible with the standard handlebars of most road bikes, mountain bikes, and gravel bikes on the market.

Fork clamp 28.6mm (1-1/8 inch), compatible with mainstream bicycle fork specifications.

Standard mounting holes allow for immediate installation after replacing the original handlebars, requiring no additional modifications; even beginners can easily install it.

III. Enhanced User Experience

1. Say Goodbye to Numb Hands Riding, Improved Long-Distance Comfort

When riding on unpaved roads, road vibrations are directly transmitted to the arms through the handlebars, easily leading to wrist pain and numbness during prolonged riding. This shock-absorbing stem's cushioning travel effectively filters high-frequency vibrations, making your long rides and weekend trips no longer troublesome by bumps.

2. Enhanced stability on complex terrains, providing greater peace of mind during handling

The four-link suspension absorbs vibrations without the play in traditional shock-absorbing stems, maintaining precise handling feedback during cornering and braking, giving you more confidence when off-roading and descending hills.

3. Commuting / Touring / Off-Road: One tool solves all scenarios

Urban Commuting: Filters out bumps from manhole covers and speed bumps, making daily riding easier.

Gravel Roads: Handles gravel and potholes, reducing hand fatigue and allowing you to ride further.

Light Off-Road: Cushions against steps and steep inclines, protecting your wrist joints.

IV. Installation and Fitting Instructions

Installation Steps:

Remove the original stem and clean the fork and handlebar mounting area.

Slide the shock-absorbing stem onto the fork and initially secure the screws.

Install the handlebars, adjust to the appropriate angle, and evenly tighten all securing screws.

Install the spring with the appropriate stiffness according to your needs, fine-tune the preload knob, and test the shock absorption effect.

Fitting Notes:

Confirm that your fork has a standard 28.6mm (1-1/8 inch) top tube diameter and your handlebars have a 31.8mm top tube diameter. Diameter

Before installation, please check that all stem screws are present. Tighten them evenly in a crisscross pattern during installation to avoid uneven stress.

Before first use, be sure to test the shock absorption effect. Adjust the spring stiffness and preload according to your weight and road conditions.

This shock-absorbing stem is a cost-effective choice for Gravel touring, long-distance commuting, and light off-road riding. For the price of a single stem, it provides an "upgraded shock absorption" for your bicycle, making every ride more comfortable and safer.