THOMSON

Thomson Masterpiece 27.2mm Aluminum Setback Seatpost - Lightweight, Durable, Adjustable SP-M105SB-BK

MSRP : $197.07
$151.59
(You save $45.48 )
In Stock
(0) Write a Review
SKU:
52174
UPC:
875850001077
Condition:
New
Shipping:
Free Shipping (2-3 Business Days)
Adding to cart… The item has been added

About The Product

  • Made in the U.S.A.
  • 41mm seat rail grip length
  • 40% stronger on ultimate strength test than competitor posts
  • Approximately 40 grams lighter than the same size Elite post
  • Ellipse bore inside tube for optimum strength to weight ratio.
  • 200lb weight limit

Upgrade your cycling setup with the Thomson Masterpiece Setback Seatpost - the pinnacle of performance, durability, and lightweight engineering. Crafted in the USA, this 27.2mm diameter seatpost measures 330mm in length with a 16mm setback, designed for riders who seek precision fit and reliable support for all types of road, mountain, or gravel bikes.

Premium Materials & Construction

Constructed from high-grade 7000-series aluminum, the Thomson Masterpiece seatpost offers exceptional strength-to-weight ratio, ensuring longevity and resistance to fatigue. The seamless machining process, where the post and cradle are carved from a single aluminum piece, minimizes stress points while reducing weight by approximately 40 grams compared to traditional models. The black anodized finish enhances corrosion resistance and adds a sleek aesthetic to any bike.

Innovative Performance & Engineering

Engineered for optimal performance, the Masterpiece supports seat tube angles of 62 degrees or greater, making it suitable for a wide range of riding styles and geometries. The long seat rail cradle provides superior saddle rail support, preventing bending and ensuring saddle stability during intense rides. The seatpost offers infinite tilt adjustment between -5 and +29 , allowing precise saddle positioning for maximum comfort and efficiency on the trail or road.

Advanced Components & Technology

Features captive hardware for easy installation and secure saddle mounting, combined with machined surfaces that remove excess weight without compromising strength. The 41mm seat rail grip length ensures a firm hold on your saddle rails, promoting consistent riding performance. With a weight capacity of up to 200 lbs (91 kg), the Masterpiece setback seatpost is built to perform under demanding conditions.

Versatile Style & Use Case

Designed for serious cyclists who prioritize craftsmanship and customization, the Thomson Masterpiece excels in performance-critical scenarios such as competitive racing, endurance rides, or mountain biking. Its sleek black finish complements any bike aesthetic, making it a versatile upgrade for both aesthetic appeal and functional enhancement.

Key Features:

- Machined from a single piece of 7000 series aluminum for unmatched durability and lightweight performance

- Infinite tilt adjustment (-5 to +29 ) for personalized saddle positioning

- Supports seat tube angles of 62 and above

- 16mm setback to optimize rider fit and biomechanical efficiency

- Lightweight design, weighing approximately 40 grams less than comparable models

- Captive hardware for secure saddle mounting

- 41mm seat rail grip length for reliable saddle support

Optimize your cycling performance with the Thomson Masterpiece Setback Seatpost - a perfect blend of engineering excellence, lightweight design, and versatility. Elevate your ride today with this premium upgrade designed for serious cyclists seeking lasting quality and precise fit.

  • Lightweight and durable, the Thomson Masterpiece Setback Seatpost is crafted from a single piece of 7000-series aluminum, ensuring exceptional strength and long-lasting performance for demanding rides.
  • Engineered with innovative machining techniques, all surfaces are precision-machined to minimize weight without sacrificing structural integrity, providing a high-performance upgrade for competitive and recreational cyclists.
  • Features a versatile infinite tilt adjustment from -5 to +29 degrees, allowing riders to customize saddle positioning for optimal comfort and power transfer on diverse terrains and riding styles.
  • Designed with a long 41mm seat rail grip and a 16mm setback, this seatpost provides excellent saddle stability and compatibility with a wide range of seat angles, accommodating seat tube angles of 62 degrees or more.
  • Made in the USA, the Thomson Masterpiece Seatpost combines sleek black aesthetics with high-quality components, delivering a premium cycling accessory that enhances both style and function for serious cyclists.
SpecificationValue
ManufacturerTHOMSON
Manufacturer Part No.SP-M105SB-BK
Universal Product Code875850001077
Invoice DescriptionSEATPOST THOM 27.2 330mm-M-PC SETBACK BK
Shipping Weight0.48 lbs.
Package Dimensions14.9 x 3.9 x 2.55
Country of OriginUNITED STATES
Outer Diameter27.2mm
Length330mm
ColorBlack
MaterialAly
Setback16mm
Weight193g
Supplier:
JBI

Bike Junkies offers no‑hassle returns and exchanges within  60 days of delivery. We want every customer to feel confident when shopping with us, and our return process is designed to be simple, fair, and fast.

Return Eligibility

To qualify for a return or exchange, the following conditions must be met:

  • The item must be in new, unused, and uninstalled condition.

  • All original packaging, tags, hardware, and accessories must be included and intact.

  • Items showing wear, installation marks, damage, or improper use cannot be accepted.

  • An order number is required.

Once your return is received at our warehouse, a refund will be issued within 5 days after inspection.

Refunds

Refunds are issued to the original form of payment once the returned item has been received and approved. If we are unable to refund to the original payment method, the refund will be issued as store credit.

Depending on your bank or credit card provider, it may take an additional 2–3 business days for the refund to appear in your account. 

Exchanges

To make an exchange, simply complete the return process and then place a new order for the item you want instead. This ensures the replacement item is reserved and ships quickly.

How to Start a Return

To request a Return Authorization (RA#), contact us at support@bikejunkies.com. Please include your order number and the item you wish to return.

Once approved:

  1. You will receive a Return Authorization email with instructions.

  2. Print the prepaid label provided by us. ($9.99 will be deducted from your refund)

  3. Ship the item back within 7 days of the RA being issued as RA #'s are only valid for 7 days. 

Please do not tape anything to the original product packaging. Place the item inside a proper shipping box. Using the manufacturer’s box as the shipping container will result in damage and the return may be rejected.

Be sure to keep your return tracking number. Powersport Junkies is not responsible for lost return shipments. You will receive a confirmation email once your return has been processed and refunded.

Defective, Incorrect, or Damaged Items

If you receive a defective, damaged, or incorrectly shipped item, contact us immediately. We will cover the return shipping cost and ensure the issue is resolved quickly.

Non‑Returnable Items

Certain items cannot be returned, including:

  • Electronics with opened packaging or broken manufacturer seals

  • Any part that has been installed or shows installation attempts

  • Tools or chemicals that have been opened or unsealed

  • Open‑box items with destroyed or missing packaging

Our Info

  • Storefront name: Bike Junkies

  • Address: 940 Calle Amanecer, Suite N
    San Clemente, CA 92673

  • Phone: 800-605-2152

  • Support email: support@bikejunkies.com

  • Support hours + timezone: 

        Monday-Friday: 9:00 AM-5:00 PM PST

        Saturday: 9:00 AM-3:00 PM PST

        Sunday: Closed

This Shipping Policy explains how orders are processed, handled, and delivered by Bike Junkies, including delivery timelines, shipping coverage, and special conditions for military addresses. It is designed to give customers a clear understanding of what to expect when placing an order.

Bike Junkies is proud to be an authorized dealer of the brands we currently offer. When you purchase from us, you are guaranteed to receive genuine, brand-new products backed by the full manufacturer warranty. We work directly with the manufacturers to ensure you receive the highest quality service and support.

Order Processing and Handling

Orders are processed quickly to ensure fast delivery. Our standard handling time is 0–1 business days. Order cutoff time is 12 PM PST Monday-Friday and orders placed after that will be shipped shipped next business day. 

Transit Times

Once shipped, orders typically arrive within 2–3 business days. Transit times may vary slightly depending on the destination, weather conditions, or carrier-related delays. Delivery estimates apply only after the order has left our facility.

Delivery Schedule

Standard delivery occurs Monday through Friday. Saturday delivery may be available.

Shipping Coverage

Bike Junkies offers free shipping to the lower 48 states of the United States. We do not ship to the following locations:

  • Alaska

  • Hawaii

  • Puerto Rico

  • Any international destination outside the United States

Orders placed with shipping addresses in restricted locations will be canceled and refunded.

Military Shipping (APO/FPO)

Bike Junkies ships to APO/FPO military addresses using USPS only.

  • We cannot ship hazardous materials or oversized items to military addresses due to carrier and military mail restrictions.

  • Transit times to APO/FPO locations may vary significantly depending on military mail processing.

Address Accuracy and Delivery Issues

Customers are responsible for ensuring that all shipping information provided at checkout is accurate and complete. Bike Junkies is not responsible for delays, lost packages, or delivery failures caused by incorrect or incomplete addresses. If a package is returned due to an address error, additional shipping charges may apply to resend the order.

Lost, Delayed, or Damaged Shipments

If a shipment is delayed, lost, or arrives damaged, customers should contact us promptly so we can assist with initiating a claim or resolving the issue with the carrier. While we support the process, final decisions regarding claims are made by the carrier.

Tracking Information

A tracking number is provided via email once the shipping label has been created. Tracking updates may take up to 24 hours to appear after the label is generated.

Shipping Restrictions

Certain items may be subject to shipping restrictions due to size, weight, or hazardous material regulations. If an order cannot be shipped due to such restrictions, we will notify the customer to arrange an alternative solution.

Our Info

  • Storefront name: Bike Junkies

  • Address: 940 Calle Amanecer, Suite N
    San Clemente, CA 92673

  • Phone: 800-605-2152

  • Support email: support@bikejunkies.com

  • Support hours + timezone: 

        Monday-Friday: 9:00 AM-5:00 PM PST

        Saturday: 9:00 AM-3:00 PM PST

        Sunday: Closed

For warranty issues please contact us at support@bikejunkies.com. Each Brand is different and we can provide instruction to complete warranty issues.

Bike Junkies is proud to be an authorized dealer of the brands we currently offer. When you purchase from us, you are guaranteed to receive genuine, brand-new products backed by the full manufacturer warranty. We work directly with the manufacturers to ensure you receive the highest quality service and support.

Our Info

  • Storefront name: Bike Junkies

  • Address: 940 Calle Amanecer, Suite N
    San Clemente, CA 92673

  • Phone: 800-605-2152

  • Support email: support@bikejunkies.com

  • Support hours + timezone: 

        Monday-Friday: 9:00 AM-5:00 PM PST

        Saturday: 9:00 AM-3:00 PM PST

        Sunday: Closed