Independent buyers guides and product information
UK edition · GBP

TRIWONDER Quick Release Bike Seat Post Clamp 31.8mm Black

£5.49 (as of 26/10/2026 19:27 GMT - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

TRIWONDER Bike Seat Post Clamp is a black 31.8 mm quick release seatpost tube clamp for bicycles. It is stated as an aluminium alloy clamp, and the main check is matching the 31.8 mm size to the seat post diameter on your bike.

SKU: B0924GPRXC Category:

As an Amazon Associate we earn from qualifying purchases.

Not sure yet?Seatposts Buyer GuideRead what to compare before you choose

Compare with similar Seatposts

FZGLHQQ Bicycle Seatpost Clamp, 31.8 mm, Silver£5.59 (as of 11/10/2026 21:30 BST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)View on Amazon
Price drop −6%Bicycle Seatpost Head Saddle Clamp for Single-Stem Seat Tubes Original price was: £6.39.Current price is: £5.98. (as of 29/10/2026 01:56 GMT - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)View on Amazon

As an Amazon Associate we earn from qualifying purchases.

Quick Summary

The TRIWONDER Bike Seat Post Clamp is a black quick release seatpost tube clamp in the 31.8 mm size. It is described as a clamp for bike seat posts, with the product page also showing related clamp sizes in the range.

For buyers, the key check is the seat post outside diameter. This version is stated as 31.8 mm, and the described fitment information should be matched carefully before choosing an offer.

Key Details

Detail Verified information and buyer relevance
Brand TRIWONDER. This identifies the product range.
Product type Bike seat post clamp. It is a clamp for securing a bicycle seatpost tube.
Variant Black – 31.8 mm. Check this against the seat post size you need.
Clamp size 31.8 mm. The stated fitment information should be checked against the exact seat post diameter.
Material Aluminium alloy. This is the stated material for the clamp.

What to Compare Before Buying

  • Seat post size: This version is the 31.8 mm clamp. Match it to the bicycle seat post diameter before buying.
  • Colour: The variant is black, so choose the finish that matches your bike.
  • Clamp type: It is a quick release seatpost clamp, so make sure that is the style you want for your bike.
  • Bike type: The clamp is described for road bike, MTB, folding bike, track bike and fixed gear use.

Choosing the Correct Version

The same product family is shown in more than one clamp size. The selected version is the 31.8 mm black clamp, so the main buying check is getting the right diameter for the seat post on your bike.

Before You Decide

Confirm the 31.8 mm size, the black finish and the quick release clamp style before choosing an offer. If your seat post uses a different diameter, pick the matching version instead.

Brand

TRIWONDER

Manufacturer

TRIWONDER

Binding

DIY & Tools

Product Group

Home Improvement

Part Number

OS091112

Model

OS0912

Color

02 Black

Product Dimensions

3.15 x 5.12 x 0.79 inches

Item Weight

0.04 pounds

Size

31.8mm

Number Of Items

1

Scroll to Top