The SP-1 seatpost is made using lightweight, 2014, aluminum alloy tubing and a cold forged, aluminum, alloy head. The two-bolt head design ensures solid seat positioning and plenty of adjustability. Made with lightweight, 2014, aluminum alloy tubing and a cold forged, aluminum, alloy head. Item Specifications: Clamp Style, Standard Rails, Color, Black, Defined Color, Black, Diameter, 27.2, Length, 400, Material, Aluminum, Offset (mm), 20,

Promax SP-1 Seatpost 27.2mm 400mm 20mm Offset Black

Reference Number: 3DD2EA

Upgrade your bike's performance and style with the Promax SP-1 Seatpost - a lightweight, durable, and reliable component engineered for serious cyclists. Crafted from premium 2014 aluminum alloy tubing, this seatpost seamlessly combines strength with optimized weight savings, making it an ideal choice for road, mountain, or endurance riding.

Materials & Construction:

Constructed from high-quality 2014 aluminum alloy, the Promax SP-1 seatpost offers exceptional durability and corrosion resistance. The cold-forged aluminum alloy head enhances structural integrity and provides a secure, stable connection between your saddle and bike frame. Its black anodized finish adds a sleek, professional look while providing added protection against scratches and environmental wear.

Performance & Engineering:

Designed for precision and reliability, the SP-1 features a 27.2mm diameter that fits a wide range of bike frames, with an adjustable length of 400mm and a 20mm offset for optimal saddle positioning. The two-bolt clamp system ensures rock-solid seat angle and height adjustments, preventing creaking or slippage during rides. Its lightweight profile reduces overall bike weight, enhancing acceleration and handling without sacrificing strength.

Components & Technology:

The cold forging process used in manufacturing ensures consistent wall thickness and superior mechanical properties, resulting in a high-strength, lightweight seatpost capable of withstanding rigorous riding conditions. The two-bolt clamping mechanism simplifies saddle installation and adjustment, providing cyclists with quick, secure customization options-perfect for dynamic riding scenarios and long-distance comfort.

Style & Use Case:

With its sleek black finish and minimalist design, the Promax SP-1 seamlessly integrates with any bike aesthetic-whether you prefer a clean, modern look or a classic style. Ideal for road racers, mountain bikers, and commuters alike, this seatpost offers versatile performance tailored to every riding discipline. Its reliable engineering makes it the perfect upgrade for those seeking improved saddle control and overall riding efficiency.

Innovative & Differentiating Features:

Designed with both performance and durability in mind, the Promax SP-1 features a precision cold-forged head and a lightweight aluminum body, setting it apart from standard seatposts. Its adjustable, secure two-bolt design provides superior saddle stability, making it a preferred choice for competitive cyclists and weekend warriors seeking dependable quality and style.

Optimize your ride with the Promax SP-1 Seatpost - engineered for excellence, built for performance, and designed to elevate your cycling experience.

  • Lightweight 2014 aluminum alloy construction combines durability with reduced weight, enhancing overall riding efficiency and performance.
  • Equipped with a cold-forged aluminum alloy head, providing superior strength, precise fit, and long-lasting reliability under intense cycling conditions.
  • Features a two-bolt clamp design for enhanced seatpost stability, easy adjustments, and secure saddle positioning during demanding rides or extended adventures.
  • Designed for versatile use with standard rail compatibility, making it suitable for a wide range of road, mountain, or hybrid bicycles.
  • Sleek black finish and 400mm length offer a stylish, modern look while providing optimal saddle height adjustability for enhanced comfort and riding control.
Item Specifications
Clamp StyleStandard Rails
ColorBlack
Defined ColorBlack
Diameter27.2
Length400
MaterialAluminum
Offset (mm)20

Why 365 Cycles?

365 Cycles is an Authorized Promax Dealer, and we offer the Full Promax Warranty!

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365 Cycles delivers all your cycling needs fast! We don't waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us.

At 365 Cycles our mission is to simplify the shopping experience. We want to get you the right product in a quick time frame and be here if you need help with questions, warranty, friend to talk to, etc.

We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home.





Shipping & Handling

Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.

Please allow 1-2 business days for your order tracking to update.

  • Cut off for SAME DAY SHIPPING- 1:30 pm EST Monday - Friday
  • Friday afternoon -Sunday orders ship the following Monday
  • Due to carrier restrictions orders shipped to: PO Box, HI, AK, & PR 365 Cycles may use a comparable service to what was selected.

Combined Shipping Discounts

To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.

  1. Be sure you are using the US site: https://www.ebay.com
  2. Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
  3. Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
  4. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
  5. You’ll need to change the shipping method to Priority on every item in your cart before the rate can be calculated.

Returns

365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.

Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.

Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.

If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!

Exchanges

If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.



STPS0950 .

Company Details

365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States

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