🌍 Worldwide shipping · 30-day returns · Rated Excellent on Trustpilot ★★★★½
Price
$30.99
Azarxis Bike Seatpost Shim Bicycle Seat Post Tube Adapter Shim Sleeve 100mm Aluminum MTB Bicycle Reducing Sleeve 25.4 27.2 28.6 31.8 to 27.2 28.6 30.4 30.9 31.6 31.8 33.9 34.9 (I.D.φ25.4/O.D.φ27.2) — image 1
Seat PostsAzarxis✓ In stock

Azarxis Bike Seatpost Shim Bicycle Seat Post Tube Adapter Shim Sleeve 100mm Aluminum MTB Bicycle Reducing Sleeve 25.4 27.2 28.6 31.8 to 27.2 28.6 30.4 30.9 31.6 31.8 33.9 34.9 (I.D.φ25.4/O.D.φ27.2)

$30.99
Worldwide shipping
Fast tracked delivery
30-day returns
Hassle-free returns
Secure checkout
Safe & protected
Great service
Thousands of happy customers
About this item
  • ✅ DURABLE & LIGHTWEIGHT - Made of high-quality T6 aluminum alloy with CNC machining anodizing process surface, which offers high strength and corrosion resistance, ensuring long-lasting use
  • ✅ VARIOUS SIZES AVAILABLE - Length: 100mm. Diameter: 25.4 to 27.2 / 28.6, 27.2 to 28.6 / 30.4 / 30.9 / 31.6 / 33.9, 28.6 to 31.8, 31.8 to 34.9. Various size conversions are available to solve the problem of improperly sized frames and seat tubes
  • ✅ EASY TO INSTALL & REMOVE - First open the seatpost clamp, then put the shim adapter and seat post in, and adjust the height of the seat pole, and finally lock the seat tube clip
  • ✅ WIDE APPLICATION - The bicycle seatpost reducer is suitable for most bikes, such as mountain bike, road bike, MTB, BMX, Electric bike, DH, and more. Easily adjust the diameter of the bicycle and no more wasting money on repurchasing another seat post
  • ✅ WARMING TIPS - Please check the outside diameter of your bike's frame seat tube, or check the size marks on the seatpost. Then measure the inside diameter of the old clamp, or measure the outside diameter of the seat tube on your bike frame. And choose the most suitable size according to the size chart
Product details
Brand
Azarxis
Manufacturer
Azarxis
Material
Aluminium
Colour
Black
Size
I.D.φ25.4/O.D.φ27.2
Weight
0.02 kg
Model number
アダプター
Part number
AZ-OS0934BL-254-272

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
Excellent
4.5 average rating
See all reviews →
S
Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 12 of 10 reviews

You might also like

Similar items

View all →