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SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
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SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
SAFORT USS-SP28 Suspension Seatpost - 345mm
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SAFORT USS-SP28 Suspension Seatpost - 345mm

$179.00
Diameter
Qty

Features

  • 【ALL-NEW SP28】- Different from the well-received SAFORT SP18(Standard Model, chosen by 50,000+ US riders in 2024) and its upgraded SP19(Premium),the new SP28's redesigned structure integrates patented EasyTune and VisiStiff systems.The combination simplifies customization through intuitive, on-bike adjustment (no disassembly required), enabling riders to quickly dial in their preferred stiffness for a tailored ride
  • 【EasyTune System】- Stiffness Easy Adjustment.The system integrates the stiffness adjustment mechanism directly into the head of the seatpost, allowing riders to make adjustments while the seatpost remains fully installed in the bicycle frame, eliminating​the tedious install-adjust-reinstall cycle required by traditional designs with bottom-mounted adjustment knobs
  • 【VisiStiff System】- Visual Stiffness Indicator Window. Visual window directly displays stiffness position, eliminating blind adjustments
  • 【Patented 4-Link Suspension】- Unlike traditional suspension seatposts, this unique parallelogram structure achieves perfect pressure balance, delivering a noticeably softer and more comfortable ride through advanced suspension technology
  • 【​Built for Larger Riders​】- Specially engineered long-force-arm design accommodates riders from 75-145kg (166 -322lbs)
  • 【Specifications】- 345mm length | 145mm stack height | 37mm travel | 30mm offset | approximately 843g weight(27.2mm) | Crafted from 6061 aluminum alloy
  • 【Before You Buy】- Please measure the diameter of your current seatpost to ensure compatibility. Note:the 31.8mm size is offered as a conversion kit (includes a 27.2mm post + a 27.2 to 31.8mm shim). The shim is ultra-lightweight and nearly invisible when installed

SAFORT SP28 Suspension Seatpost

2026 ALL-NEW Design

What's New: Feature Highlights

MEASUREMENTS

FAQ

How do I measure the diameter of my seatpost?
Check near the bottom of the seatpost for the diameter, which is usually marked with numbers like 27.2, 30.9, or 31.6, etc. You will need to remove the original seatpost from the bike to find this marking
I ordered a 31.8mm seatpost, but I received a 27.2mm seatpost. Was it sent in error?
No errors. SAFORT produce 27.2/30.4/30.9/31.6mm seatposts, if yours is a different size, an adapter is needed for adjustment. We’ve included one with the 27.2mm seatpost to save you from having to purchase it separately
Is the SP28 suitable for MTB/Road/Gravel Bike?
The SP28 suspension seatpost weighs 840g (27.2mm). If you are a weight-sensitive rider, the SP28 may not be the best choice for these bicycles. It was originally designed for eBikes
The suspension feels too stiff/hard. How do I adjust the stiffness?
Use the hex wrench to turn the nut at the head. ​Clockwise (+): Firmer for roads/pavement;Counterclockwise (-): Softer for trails/off-road
What is offset and how does the 30mm specification affect the ride?​
This means the saddle is mounted 30mm behind the seatpost's centerline.The 30mm offset enhances climbing stability but may feel too stretched for riders with shorter torsos.
What is stack height and how does the 145mm specification affect me?
It's the minimum clamp-to-saddle-rail distance. The 145mm improves suspension but significantly raises saddle height, which may prevent shorter riders from touching the ground when stopped. Always measure your existing stack height before purchasing
What happens if the rider's weight exceeds 145kg (322lbs)?
The SP28 will still function safely up to 180kg (400lbs), but riders over 145kg (322lbs) may notice reduced suspension travel and a firmer ride
What kind of saddle is compatible with the SP28?​
The SP28 is compatible with both standard ​7x7mm round rails​ and ​7x9mm oval rails

Fast & Reliable Delivery, Straight to Your Door

At our websites, we understand that you want to receive your high-quality bike parts as quickly as possible. That’s why we’ve optimized our shipping process to ensure a fast delivery experience, no matter where you place your order.

1. Where We Ship From

To ensure speed and reliability, all products are shipped directly from ​Amazon fulfillment centers within the United States (any exceptions will be clearly noted on the product page). This means your order will be processed, packed, and delivered by Amazon’s advanced logistics network, providing you with a seamless shipping experience.Please note that we currently only offer shipping to customers within the United States.

2.Free Shipping

Free shipping on all US orders over $60 USD.

3. Shipping Speed & Delivery Time​

We are proud to offer ​free fast shipping (typically 2-5 business days)​​ to customers across the continental U.S. Exact delivery times may vary depending on your delivery address. Orders placed before ​3:00 PM ET​ on business days will be processed and shipped the same day. Orders placed after that time will be processed on the next business day.

4. Order Tracking

Once your order has been shipped, you will receive a confirmation email containing a tracking number. You can use this number to track your package in real-time on the shipping carrier’s website (such as Amazon Logistics, USPS, or UPS).

5. Shipping Coverage​

We currently ship primarily to the continental United States. For deliveries to Alaska, Hawaii, or internationally, certain items may not be available or may require special arrangements, which will be clearly stated on the product page before purchase.

6. Undeliverable Packages

If a package is returned to us due to an incorrect or incomplete address, failed delivery attempts, or refusal of receipt, we will contact you to arrange reshipment. Additional shipping fees may apply in such cases. Please double-check your shipping address before completing your order.

7. Questions & Support

If you have any questions about your order’s shipping status, feel free to reach out to our customer service team at ​support@inkesky.com. We’re here to help!

​​We Offer 3-Year Protection

Industry data reveals a critical gap: a staggering ​68% of bicycle components face issues between 3 to 12 months​ (BPSA & NBDA 2022-2023), a period when most riders are left without protection.

That’s why we pioneered our ​3-Year Protection Guarantee—a no-hassle commitment to replace defective parts anytime within three years. Unlike short-term policies, our warranty aligns with real-world failure patterns, ensuring cyclists enjoy worry-free rides long after purchase.

​ - 60-Day Return Policy​ - All items purchased from our website are eligible for our 60-day return policy, starting from the date you receive your product. We offer full refunds, exchanges, or replacements for any product that arrives damaged, defective, or simply doesn't meet your expectations.(Does not apply to scratch and dent products)

 - Free Returns for US Customers -We offer free return shipping for all customers within the United States.Please note that free returns do not apply to scratch and dent items.

 - Full 3-Year Warranty - We provide a comprehensive 3-year warranty against manufacturing defects. If you receive a defective product, please contact us promptly.(Certain products may have different warranty terms, which will be clearly stated on the product detail page. Scratch and dent units are also covered by this warranty)

Returns & Exchanges

- To return products purchased from our website - Please email us directly at support@inkesky.com for assistance

- To return products purchased on Amazon - Please initiate your return or exchange through Amazon's support. If you are unable to process the return via Amazon, please contact us at support@inkesky.com 

Returns & Exchanges Details:

Inkesky accepts returns and exchanges within 60 days of ​receipt​ for a full refund to your original payment method.Please return the product in its original condition. All returns are inspected, and refunds may be adjusted or denied if there is damage or misuse (excluding normal wear and tear). Inkesky is not responsible for lost return shipments—we recommend using a tracked shipping method.

Warranty

This warranty applies exclusively to the original retail purchaser and is not transferable. We only sell products on www.inkesky.com and Amazon. For purchases made through other sellers, please contact them directly for assistance.

At its discretion, Inkesky may: [1] repair the product at no cost; [2] replace it with a new or equivalent model; or [3] provide credit toward a new purchase.

Inkesky is not responsible for any incidental or consequential damages involving non-Inkesky products or components. This warranty does not cover attached third-party items (such as bike computers or frames), which are subject to their manufacturers' policies. Inkesky's maximum liability is limited to the original purchase price of the product.

This warranty excludes damage resulting from improper installation, adjustment, maintenance, accidents, misuse, modification, overloading, or any abnormal conditions as determined by Inkesky. Normal wear and tear is also not covered.

Owners should regularly inspect their products and have them professionally checked at least annually. User servicing is permitted only as instructed in official product documentation; unauthorized service may void the warranty.

All warranty claims require dated proof of purchase from an authorized seller. Products must be returned to Inkesky for inspection. To submit a claim, email support@inkesky.com.