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Bigamart
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Home/Sports & Outdoors/Sports/Cycling/Components & Parts/Seat Posts
TRIWONDER Seat Post 350mm Bike Seat Post Suitable for 25.4mm 27.2mm 28.6mm 30.4mm 30.8mm 31.6mm Bicycle Mountain Bike Road Bike Aluminum Alloy Black (Black, 30.8mm) — image 1
Seat PostsTRIWONDER✓ In stock

TRIWONDER Seat Post 350mm Bike Seat Post Suitable for 25.4mm 27.2mm 28.6mm 30.4mm 30.8mm 31.6mm Bicycle Mountain Bike Road Bike Aluminum Alloy Black (Black, 30.8mm)

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About this item
  • Rugged Construction: Crafted from high-strength aluminum alloy, this bike seat post is built to last, offering a perfect balance of lightweight performance, rust resistance, and long-term durability
  • Multiple Diameters: 25.4 mm, 27.2 mm, 28.6 mm, 30.4 mm, 30.8 mm, 31.6 mm; Length: 350 mm; Please measure the diameter of the original bicycle seat tube before purchasing to ensure the correct fit
  • Adjustable Saddle Angle: The versatile clamp allows you to fine-tune your saddle's angle for a personalized riding position, making riding more comfortable
  • Quick Installation: Simply remove your old seat post, attach your saddle to the new post, and insert it into the frame; The safety line marking ensures proper insertion, always install above the minimum line for secure riding
  • Wide Compatibility: The bicycle seatpost fits most road bikes, mountain bikes (MTB), BMX, downhill (DH), track bikes, and more
Product details
Brand
TRIWONDER
Manufacturer
TRIWONDER
Colour
B - Black
Size
30.8mm

Customer reviews

What customers say about Bigamart

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

Trustpilot
★★★★★
Excellent
4.5 average rating
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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 1–2 of 10 reviews

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