SP442 Suspension Seatpost – 27.2Mm / 30.9Mm / 31.6Mm Adjustable Shock-Absorbing Bike Seat Post, 45Mm Travel Four-Bar Linkage for MTB, Gravel, Road & E-Bikes – Supports Riders up to 242 Lbs

Description

Warranty Description	12-month Limited Warranty
Brand Name	PeakRider
Color	Silver Linkage
Included Components	Suspension Seatpost Body
Brand	PeakRider
Material	Aluminum
Material Type	Aluminum
Bike Type	Mountain Bike, Road Bike, Folding Bike
Item Dimensions W x H	1.24"W x 1.77"H
Manufacturer	PeakRider
Product Dimensions	1.24"W x 1.77"H
Size	Φ31.6mm Dia x 14inch Total Length

• 【Universal Fit – 3 Sizes Available】Fits most bikes with 27.2mm, 30.9mm, or 31.6mm seat tubes, including MTB, gravel, hybrid, commuter, road, folding, and e-bikes. Installs easily without frame modifications.
• 【Advanced Four-Bar Linkage Suspension】Parallelgram mechanism maintains a consistent saddle angle throughout its full 45mm travel, ensuring stability and comfort on uneven terrain.
• 【Up to 60% Shock & Vibration Reduction】Effectively absorbs road buzz, bumps, and trail impacts, reducing rider fatigue and protecting your lower back on long rides.
• 【Weight-Sensitive & Adjustable Preload】Preload tuning lets you customize suspension stiffness based on rider weight (110–242 lbs) and riding style for optimal performance.
• 【Durable Hardware & Easy Maintenance】Made from high-strength materials with precision CNC machining for long-lasting performance. For best results, use a properly sized Allen key and apply straight, even pressure during adjustment to avoid bolt wear. Requires minimal maintenance—simply clean after rides and lubricate monthly. Our support team is always available if you need assistance.

Product description

Weight limit: Total combined weight (rider + bike + cargo) must not exceed 110 kg.

Exceeding this limit may cause component breakdown, leading to severe injury even death.

The total preload nut is 13 turns

PRELOAD NUT ADJUSTMENT

1. Safety First: Keep the preload nut fully threaded into the seatpost at all times when adjusting.
2. Initial Setup: Adjust preload based on rider weight (see table). When seated, sag should match the laser indicator lines.
3. Fine-Tuning: Too soft → tighten toward 10% line, Too stiff → loosen toward 30% line
4. Maintenance: Springs wear over time. Tighten preload nut to restore performance, or replace spring if needed.

CNC Technology

CNC machining ensures precise dimensions and a secure fit while enhancing strength, durability, and overall riding performance.

Sealed Bearing

Sealed bearing design keeps out dirt and moisture for smoother performance, reduced wear, and reliable long-term suspension support.

Safe Install Line

The visible safe install line indicates the minimum insertion depth, helping you install the seatpost correctly for added safety and stability.

Softness & Hardness Adjustable

Easily adjust the seatpost’s softness or hardness to match your weight and riding style, ensuring optimal comfort and shock absorption on any terrain.