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Bike Suspension Seatpost 31.6 mm x 350 mm Aluminium Alloy

£20.99 (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.)

This is a 31.6 mm bike suspension seatpost with a 350 mm length, aluminium alloy construction and a black anodised finish. It has a built-in spring coil and an adjustable rebound force screw, so the main checks are seat tube diameter and whether the length suits your bike setup.

SKU: B0FPWF3MTQ Category:

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

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Quick Summary

This bike suspension seatpost is a 31.6 mm version with a 350 mm length. It is described as a seat post with a built-in spring coil and an adjustable rebound force setting, so the main checks are the post diameter, the available frame insertion space and the adjustment range you want.

The item is made from aluminium alloy and finished in black. It is presented as a seatpost for mountain bikes, road bikes and BMX use, but the critical choice point is still the exact diameter: this version is 31.6 mm.

Key Details

Detail Verified information and buyer relevance
Product type Bike suspension seatpost, for replacing or upgrading a seatpost on a compatible bike.
Diameter 31.6 mm. This must match the bike’s seat tube size for installation.
Length 350 mm. Check this against your frame and saddle height requirements.
Material Aluminium alloy. This is the stated construction material.
Finish Black, anodised surface.
Adjustment Bottom screw rebound adjustment. Compare whether you want an adjustable suspension feel.

What to Compare Before Buying

  • Seatpost diameter: This version is 31.6 mm, so the bike must take that size.
  • Seatpost length: The stated length is 350 mm, which affects insertion depth and saddle position.
  • Suspension adjustment: The rebound force is adjustable by the bottom screw, so compare whether that matches your preferred setup.
  • Material and finish: The seatpost uses aluminium alloy with a black anodised surface, which may matter if you want a matching appearance.

Compatibility, Size and Fit

This version is specifically the 31.6 mm seatpost size. The description also mentions 27.2 mm and 30.9 mm as other sizes in the range, but they are not the same variant. Check the seat tube diameter on the bike before choosing an offer, and make sure the 350 mm length works with your saddle height and frame insertion requirements.

Before You Decide

Confirm the 31.6 mm diameter before choosing an offer. Check that the 350 mm length suits your bike’s frame and saddle setup. If you want a different seat tube size, compare the other listed size options instead of assuming they are interchangeable.

Brand

HillMiles MTB

Manufacturer

HillMiles MTB

Product Group

Outdoors

Part Number

Bss

Model

Bss

Warranty

2 year

Color

Black

Size

31.6mm

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