Bicycle Seatpost Adapter Shim Sleeve 25.4/27.2/28.6/30.1/30.4/30.8/31.6/33.9/34.9/36mm

$3.24

SKU: N-SEAT001 Brand:
  • Material: Made from high-strength aluminum alloy, lightweight durable
  • CNC Precision Machining: Precision-engineered for excellent anti-slip performance. Smooth surface protects both seatpost and frame.
  • Conversion Options: Available in sizes from 25.4mm to 36mm – find the perfect match for your seatpost and frame tube.
  • 60mm Length: Standard length provides ample contact area for secure clamping without adding unnecessary weight.
  • Universal Compatibility: Suitable for mountain bikes, road bikes, electric bikes, BMX, fixed gear, and more. Easy to install.

Size

Order total:
x
View cart

Description

CATAZER bicycle seatpost sleeve

Product Overview

Upgrade your bike’s fit with the Bike Seatpost Adapter Shim Sleeve, precision-engineered to allow a smaller diameter seatpost to fit securely into a larger seat tube. Whether you’re swapping components, upgrading your frame, or building a custom bike, this adapter sleeve ensures a perfect, wobble-free connection.
Crafted from high-quality aluminum alloy and CNC machined to exacting tolerances, the shim provides excellent anti-slip performance, protecting both your seatpost and frame from scratches and movement.

Specifications

  • Material: Aluminum Alloy
  • Length: 60mm
  • Size Options

CATAZER bike seatpost shim sleeve size option


How to Install Bicycle Seatpost Adapter Shim

  • Measure your components – Determine the outside diameter of your seatpost and the inside diameter of your frame’s seat tube.
  • Select correct shim – Choose the bike seatpost shim that matches your conversion needs (e.g., 27.2mm post to 31.6mm tube).
  • Insert shim into frame – Slide the shim into the seat tube. Ensure it’s fully seated and aligned.
  • Insert seatpost – Place your seatpost into the shim. Adjust to desired height.
  • Tighten seat clamp – Secure the seatpost clamp to the recommended torque. Ensure post does not slip.
  • Test and ride – Gently test the seatpost for movement. If secure, you’re ready to ride.

CATAZER bike seatpost shim sleeve easy installation


Package Include

  • 1 x bike seatpost adapter shim sleeve

Additional information

Weight 0.1 kg
Dimensions 10 × 8 × 3 cm
Leave your review
Rating

Related Products

Description

CATAZER bicycle seatpost sleeve

Product Overview

Upgrade your bike’s fit with the Bike Seatpost Adapter Shim Sleeve, precision-engineered to allow a smaller diameter seatpost to fit securely into a larger seat tube. Whether you’re swapping components, upgrading your frame, or building a custom bike, this adapter sleeve ensures a perfect, wobble-free connection.
Crafted from high-quality aluminum alloy and CNC machined to exacting tolerances, the shim provides excellent anti-slip performance, protecting both your seatpost and frame from scratches and movement.

Specifications

  • Material: Aluminum Alloy
  • Length: 60mm
  • Size Options

CATAZER bike seatpost shim sleeve size option


How to Install Bicycle Seatpost Adapter Shim

  • Measure your components – Determine the outside diameter of your seatpost and the inside diameter of your frame’s seat tube.
  • Select correct shim – Choose the bike seatpost shim that matches your conversion needs (e.g., 27.2mm post to 31.6mm tube).
  • Insert shim into frame – Slide the shim into the seat tube. Ensure it’s fully seated and aligned.
  • Insert seatpost – Place your seatpost into the shim. Adjust to desired height.
  • Tighten seat clamp – Secure the seatpost clamp to the recommended torque. Ensure post does not slip.
  • Test and ride – Gently test the seatpost for movement. If secure, you’re ready to ride.

CATAZER bike seatpost shim sleeve easy installation


Package Include

  • 1 x bike seatpost adapter shim sleeve
Leave your review
Rating

Related Products