Promax SP-877 Suspension Seatpost

Color: Black
Size: 31.6 MM X 350 MM X 0 MM
Shipping restrictions apply.

Members get an estimated $5.00 (10%) back on this item as a part of your annual .

Members get an estimated $5.00 (10%) back on this item.
To buy,  sign in as an REI Co-op Member or join now.

Ride farther, longer and more comfortably with the Promax SP-877 Suspension seatpost. With 40 mm of suspended travel, it takes the edge off commutes, off-road ventures or quick spins around the block.


  • Crafted from 2014-series aluminum alloy for strength and weight savings
  • Designed to limit side-to-side play for a stable feel
  • Dual-bolt saddle clamp for standard rails


View all Promax Suspension Seatposts

Technical Specs

Best Use


Seatpost Diameter

31.6 MM X 350 MM X 0 MM: 31.6 millimeters

Seatpost Length

350 millimeters

Seatpost Setback

12 millimeters

Seatpost Travel

40 millimeters

Seatpost Suspension Type

Coil Spring

Seatpost Material



425 grams

6 reviews with an average rating of 4.8 out of 5 stars

Loading Reviews...

Questions & Answers

Loading Questions...