1. Bicycle Rims For Sale
  2. sku: 13823373148161751
  3. SPECIALIZED 28121-3915

SPECIALIZED 28121-3915 Tarmac Carbon Seatpost Offset 888818665457 SL7 380MM 20MM

28121-3915 Specialized S-works Tarmac Sl7 Carbon Seatpost 380mm X 20mm Offset

( Brand: Specialized ), ( Manufacturer Part Number: 28121-3915 ), ( Color: Carbon / Black ), ( Item Diameter: 20 Mm ), ( Seatpost Type: Aero Seatpost ), ( Compatible Bike Type: Racing Bike, Road Bike ), ( Material: Carbon ), ( Item Length: 380 Mm ), ( Item Weight: 214 G ), ( Part Type: Seatpost ), ( UPC: 888818665457 )

Review SPECIALIZED S works Tarmac Sl7 Carbon Seatpost 380mm 20mm Offset

S-Works Tarmac SL7 Carbon Seatpost (380mm, 20mm Offset) - A Lightweight and Performance-Driven Component for Your Road Bike

Experience the unparalleled fusion of lightweight construction and unyielding performance with the S-Works Tarmac SL7 Carbon Seatpost. This 380mm seatpost, featuring a 20mm offset, is meticulously engineered to elevate the efficiency of your S-Works Tarmac SL7 road bike, ensuring every pedal stroke propels you further down the road.

Crafted from our proprietary FACT Carbon material, this seatpost is both lightweight and remarkably stiff, providing an immediate response to your inputs for maximum power transfer and control. The SL7 moniker signifies the seventh iteration of our Tarmac's carbon frame technology, a testament to our relentless pursuit of innovation and optimization.

The 20mm offset strikes a balance between aggressive positioning and comfort, offering a responsive ride without compromising on rider comfort over long distances. The 380mm length provides ample adjustability to fine-tune your bike's setup to suit your personal preferences and riding style.

The S-Works Tarmac SL7 Carbon Seatpost also boasts a sleek, minimalist design, seamlessly integrating with the overall aesthetic of your S-Works Tarmac SL7. The carbon layup is optimized to reduce weight while maximizing strength, resulting in a seatpost that feels as light as a whisper but performs like a force of nature.

Upgrade your S-Works Tarmac SL7 with the S-Works Tarmac SL7 Carbon Seatpost (380mm, 20mm Offset) and prepare to redefine your riding experience. This component is not just a replacement; it's an investment in performance, comfort, and the ultimate expression of your passion for cycling.

Product: S-Works Tarmac SL7 Carbon Seatpost (380mm, 20mm offset)

Pros:

1. High-quality carbon construction: This seatpost is made of high-modulus carbon fiber, ensuring lightweight, durable, and precise performance.

2. Adjustable setback: The 20mm offset can be adjusted to suit your riding style and position, improving comfort and power transfer.

3. S-Works-specific design: Designed to work seamlessly with other S-Works components, ensuring optimal performance and integration.

4. Sleek and aerodynamic design: The slim profile of the seatpost reduces air resistance, enhancing speed and efficiency.

Cons:

1. Premium price: As a high-end product, it comes at a higher price point compared to other seatposts in the market.

2. Limited size options: The 380mm length may not be suitable for all riders, and there are limited options in terms of length and offset.

3. Requires specific tools for installation: Proper installation requires specific tools, which may not be readily available to all consumers.

Conclusion:

The S-Works Tarmac SL7 Carbon Seatpost offers a high-quality, lightweight, and adjustable seatpost solution for serious cyclists. Its sleek design and compatibility with other S-Works components make it an attractive choice for those seeking optimal performance. However, its premium price and limited size options may deter some potential buyers.

Recommendation:

If you are a serious cyclist looking for a high-performance seatpost that offers adjustability and seamless integration with other S-Works components, the S-Works Tarmac SL7 Carbon Seatpost is a worthwhile investment. However, if you are on a budget or require a more versatile seatpost with various length and offset options, you may want to consider other alternatives in the market.

Details:

Comes with 7x9mm carbon saddle clamp. In good condition.No longer needed after switching to offset seatpost.

part #: 281213915 prices

  • $109.75-$449.99

specifications ribicycl:

  • brand: Specialized
  • mpn: 28121-3915
  • color: Carbon / Black
  • item diameter: 20 Mm
  • seatpost type: Aero Seatpost
  • compatible bike type: Racing Bike, Road Bike
  • material: Carbon
  • item length: 380 Mm
  • item weight: 214 G
  • part type: Seatpost
  • upc: 888818665457

payments ribicycl:

  • other
  • credit card: Discover
  • wallet: Paypal

returns ribicycl:

  • policy: No Returns

seller ribicycl:

  • city: San Jose, California
  • # reviews: 40
  • rating: 100.0%

shipping ribicycl:

  • type: Calculated
  • cost: $11.96
  • service: USPS Ground Advantage
  • class: Standard
  • transit: 5-9 Days
  • carrier: USPS

general ribicycl:

  • condition: Used
  • Cycling > Bicycle Components Parts > Seatposts

offer ribicycl:

  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • quantity: 1
  • best offers: True
  • started: July 11, 2025
item diameter: 20 mm, seatpost type: aero seatpost, compatible bike type: racing bike, road bike, item length: 380 mm, item weight: 214 g, part type: seatpost,
category: sporting goods > cycling > bicycle components parts > seatposts, color: carbon black, material: carbon, sku: 13823373148161751,
Specialized 28121-3915 Is Similar To:
  • (37.6% similar) Best strength-to-weight ratio on the market hollow carbon crank arms offer superior stiffness oversized alloy spindle with girth coupling interface includes all hardware fits Specialized road frames USB or PF30 bottom bracket SHELLBB30 compatible compatible : unidirectional fiber size: light and ...(September 13th, 2018)
  • (47.7% similar) Item is the one in pics. Please have all questions answered prior to buying. New old stock Specialized s-works shallow carbon handle bar...(January 7th, 2019)
  • (43.6% similar) Only factory defects are accepted as a reason for return. Features:fact high-strength carbon construction is lightweight and stiff. Ergonomic top perch alleviates pressure on hands. Compatible with clip-on aero bars extensions. The item and package should be in original perfect condition...(November 2nd, 2017)
  • (37.2% similar) This time saving comes from the distinct aero shape, reduced tape on tops, and full internal cable routing. Hope long term business with you if have any queries, please via. Developed in the Specialized wind tunnel, s-works Aeroflot saves 17 seconds over a 40KM distance versus traditional shallow ...(September 24th, 2018)
  • (39.5% similar) New Specialized s-works hover carbon handlebars satin 40CM features:fact construction offers an optimized blend of durability and light overall weight. Hope long term business with you if have any queries, please via. Shallow bend drop: 123MM drop x 75MM reach a high performance bar, ideal for ...(September 24th, 2018)
  • (39.5% similar) Hope long term business with you if have any queries, please via. Shallow bend drop: 123MM drop x 75MM reach a high performance bar, ideal for smaller hands or riders that spend the majority of their time climbing. An ergonomic top perch with smooth transitions alleviate pressure on hands and ...(September 24th, 2018)
  • (39.5% similar) An ergonomic top perch with smooth transitions alleviate pressure on hands and greatly improve comfort. Shallow bend drop: 123MM drop x 75MM reach a high performance bar, ideal for smaller hands or riders that spend the majority of their time climbing. Hope long term business with you if have any ...(September 24th, 2018)
  • (54.1% similar) Specialized SW sl 2-BOLT 27. 2X350 carbon seatpost...(April 28th, 2018)
  • (37.2% similar) Only sings of use are where it was inserted in the frame. This post is in a 350MM length and 27. 2 diameter and the seat clamp is for 7X9MM carbon rails...(October 16th, 2018)
  • (32.9% similar) No reserve offer front and rear rival carbon fiber fusee star e5 rims and tires start price 349 flat rate shipping 50 USA only...(October 28th, 2016)
  • (41.1% similar) They are take offs from a 2014 epic world cup expert bike Specialized rival control carbon fiber 29ER wheels front 15MM thru axle rear 12 x 142 rear axle weights on my digital scale front grams rear grams these wheels are in excellent condition with minimal mileage. Ready to be set up tubeless. ...(October 6th, 2015)
ribicycl logo
2 offers $109.75–$449.99 USD
  • New. Offer #1 priced at $449.99 + $7.95 shipping estimate = $457.94* total. Cylindrical aluminum head assembly adjusts fore-aft and tilt with an easy-access single bolt. This replacement seatpost for the Tarmac SL7 ensures the perfect fit with two different setback options 0mm and 20mm.+$7.95 shipping
  • New other (see details). Offer #2 priced at $109.75 + $0.00 shipping estimate = $109.75* total. Cylindrical aluminum head assembly adjusts fore/aft and tilt with a single bolt. Compatibility: Tarmac SL7 Models-ONLY.FREE SHIPPING

Copyright © ribicycl.com