- Home Page /
- Sports Outdoor & Fitness /
- Sports /
- Cycling /
- Parts & Components /
- Seats & Saddles /
- Seat Posts /
- CYSKY Bike SeatPost Adapter Shim, 25.4/27.2/2...
0 ratings
Item #:
11266693
CYSKY Bike SeatPost Adapter Shim, 25.4/27.2/28.6/30.4/30.8/31.6/33.9/34.9mm, 60mm Length Bicycle Seat Post Tube Adapter, Seatpost Reducing Sleeve
86% of respondents would recommend this to a friend
Item #:
11266693
AUD 29
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Order now and get it around Thursday, September 03
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Made of aluminum alloy material, anti-rust and durable.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Versatile Compatibility
Designed to fit multiple diameters from 25.4mm to 34.9mm, making it ideal for various bike types including mountain, road, and BMX.
Durable Material
Constructed from high-quality materials, ensuring long-lasting durability and enhanced performance even in rugged terrains.
Easy Installation
Simple and quick to install, allowing cyclists to adjust their seat post height effortlessly, improving overall riding comfort.
Product Details
| Brand Name | CYSKY |
| Manufacturer | CYSKY |
| UPC | 734779642511 |
| Number of Items | 1 |
| Model Number | CYSKY Seatpost 27.2 |
| Manufacturer Part Number | CYSKY Seatpost 27.2 |
| Unit Count | 1 Count |
| Item Weight | 0.01 kg |
| Item Dimensions W x H | 1.07"W x 2.36"H (2.7 cm) |
| Item Diameter | 27.2 millimeters |
| Color | 25.4-27.2mm |
| Material Type | Aluminum |
| Bike Type | Mountain Bike |
| Material | Aluminum |
| Brand | CYSKY |
| Product Dimensions (L x W x H) | 1.07"W x 2.36"H (2.7 cm) |
Who Should Buy?
-
Custom Fit
Ideal for cyclists needing a custom fit due to varying seat post sizes among different bike models.
-
Budget-Friendly
Great option for budget-conscious cyclists looking to modify their bike without purchasing a new seat post.
-
Multiple Bike Owners
Perfect for users who own multiple bikes with different seat post diameters and need a flexible solution.
-
High-Performance Riders
Not suited for elite cyclists needing precise adjustments and high-performance components for competitive riding.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the purpose of the CYSKY Bike SeatPost Adapter Shim?
Answer: The CYSKY Bike SeatPost Adapter Shim is designed to provide a snug fit for your bicycle seat post when using a smaller diameter seat post in a larger seat tube. This ensures optimal stability and comfort while riding. It is especially useful for riders who need to adjust their seat height or change their seat post for better ergonomics. By using this shim, you can maintain safe and comfortable positioning while cycling. -
Question:
What sizes of seat posts does the CYSKY adapter shim fit?
Answer: The CYSKY Bike SeatPost Adapter Shim fits a variety of seat post sizes, specifically ranging from 25.4mm to 34.9mm. This flexibility makes it suitable for most standard bicycle seat post diameters. Whether you have a mountain bike, road bike, or hybrid bike, this shim allows you to securely install your desired seat post without compromising safety or comfort, enhancing your riding experience. -
Question:
How do I install the CYSKY Bike SeatPost Adapter Shim?
Answer: To install the CYSKY Bike SeatPost Adapter Shim, first clean the inside of your seat tube and the outside of your seat post. Next, slide the shim onto the smaller seat post, ensuring it fits snugly. Then insert the shimmed seat post into the seat tube and tighten the clamp securely. This straightforward installation process allows riders to quickly adapt their bike's seating configuration to suit their preferences or needs. -
Question:
Is the CYSKY Bike SeatPost Adapter Shim durable?
Answer: Yes, the CYSKY Bike SeatPost Adapter Shim is made from high-quality materials that ensure durability and longevity. The robust construction can withstand various weather conditions and the wear and tear of regular cycling. This means that you can enjoy a reliable and stable performance on your bike without worrying about the shim degrading over time, allowing for consistent use in diverse riding conditions. -
Question:
Can I use the shim with carbon fiber seat posts?
Answer: Yes, the CYSKY Bike SeatPost Adapter Shim can be successfully used with carbon fiber seat posts, provided the diameters are compatible. Carbon fiber seat posts may require careful handling, as excessive clamping pressure can damage them. The shim accommodates the fit while ensuring even pressure distribution, making it a suitable solution for riders looking to enhance their setup without risking damage to their carbon components. -
Question:
What is the length of the CYSKY Bike SeatPost Adapter Shim?
Answer: The CYSKY Bike SeatPost Adapter Shim has a length of 60mm. This length is specifically designed to optimize the stability of fit between the seat post and the seat tube, preventing any unwanted movement. A longer shim can help enhance grip and lessen the chance of slippage during rides, allowing you to maintain your preferred riding position securely, which is essential for performance and comfort. -
Question:
Can this shim be used for all bike types?
Answer: While the CYSKY Bike SeatPost Adapter Shim is versatile enough to suit various bicycle types including mountain bikes, road bikes, and hybrid models, compatibility ultimately depends on the diameters of the seat post and seat tube. Always check these measurements before installation to ensure optimal fit and performance, making this shim a solid addition to most cyclists' toolkits for adjusting their bike setup. -
Question:
What materials is the adapter shim made of?
Answer: The CYSKY Bike SeatPost Adapter Shim is typically crafted from a blend of high-quality aluminum alloy, known for its lightweight yet sturdy properties. This choice of material balances strength and weight, ensuring effective performance under pressure while being easy to handle. This construction not only contributes to the overall durability of the shim but also enhances resistance against rust and environmental damage, making it ideal for outdoor biking. -
Question:
How does the shim improve comfort when riding?
Answer: By using the CYSKY Bike SeatPost Adapter Shim, it allows riders to choose the appropriate seat post diameter and height, tailoring their bike fit. A well-fitted seat post translates into better posture and weight distribution while cycling, ultimately enhancing comfort over longer rides. Whether you're commuting or trail riding, having the correct setup minimizes discomfort and fatigue, leading to a more enjoyable cycling experience. -
Question:
Where can I buy the CYSKY Bike SeatPost Adapter Shim in Kiribati?
Answer: You can purchase the CYSKY Bike SeatPost Adapter Shim at Ubuy in Kiribati. Ubuy offers a convenient online shopping option, allowing you to browse through product specifications, read customer reviews, and make an informed decision when buying this shim for your bicycle. Ubuy's platform is user-friendly and provides you with all necessary information to ensure you find the right fit for your biking needs.
CYSKY Seat Posts CYSKY Seatpost 27.2 Editorial Review
The CYSKY Seatpost Adapter Shim is a versatile and essential accessory for cyclists who need to adjust the size of their seatpost. With five different size options available, this adapter shim can accommodate various seatpost sizes, making it compatible with mountain bikes, road bikes, BMX bikes, and fixie gears. Customers have praised the CYSKY Seatpost Adapter Shim for its functionality and ease of use. It fits and works exactly as described, with no reported issues so far. Users have also noted that the adapter shim is of good quality and performs as expected. It is easy to install, taking only seconds to attach securely to the bike. One customer mentioned that they had to sand down the shim in order for it to fit properly due to tight tolerances on their frame, shim, and seatpost. However, this seems to be an isolated incident and may not be a common experience for most users. Overall, the CYSKY Seatpost Adapter Shim is highly recommended for its durability, quality, and performance. It is a reliable solution for cyclists who need to adjust their seatpost size and provides a secure fit for a variety of bikes.
Customer Reviews & Ratings
481 customers ratings
-
5 Star
76%
-
4 Star
14%
-
3 Star
6%
-
2 Star
1%
-
1 Star
3%
Review this product
Share your thoughts with other customers
Pros
- Fits and works as described
- Easy to install and secure
- Good quality and durability
- Accommodates various seatpost sizes
- Versatile and compatible with different types of bikes
Cons
- Potential tight tolerances may require extra adjustments in some cases
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
AUD 29
Order now and get it around Thursday, September 03
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Durable and rust-resistant aluminum alloy material
- Available in various sizes
- Suitable for different types of bikes
- Check bike frame seat tube diameter before purchasing
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.