Skip to main content
Hi !Hi! Sign in or registerHelp & Contact
Sell
Watchlist
My eBay
  • Summary
  • Recently Viewed
  • Bids/Offers
  • Watchlist
  • Purchase History
  • Selling
  • Saved feed
  • Saved Searches
  • Saved Sellers
  • Messages
Please sign-in to view notifications.
Loading...
eBay Home
Advanced
Copyright © 1995-2025 eBay Inc. All Rights Reserved. User Agreement, Privacy, Payments Terms of Use, Cookies and AdChoice

PROMAX Plain Seatpost Bicycle Seatposts

More to explore

  • 27mm Seatpost
  • Campagnolo C Record In Bicycle Seatposts
  • Dura Ace Seatpost
  • Forward Seatpost
  • Fsa K Force Light Seatpost
  • I Beam Seatpost
  • Schwinn Seat Post In Bicycle Seatposts
  • Seatpost Shim
  • Setback Seatpost
  • Thomson Elite Seatpost
  • Use Seatpost
  • Vintage Seatpost

breadcrumb

  • eBay
    • Sporting Goods
    • Cycling
    • Bicycle Components & Parts
  • Sporting Goods
  • Cycling
  • Bicycle Components & Parts
  • Seatposts
  • PROMAX Plain Seatpost Bicycle Seatposts

Shop by category

  • Bicycle Components & Parts
    • Seatposts
    • Bar Ends & Plugs
    • Bearings
    • Bolts & Fasteners
    • Bottom Brackets
    • Brake Levers
    • Brake Pads
    • Brake Rotors
    • Brakes
    • Build Kits & Gruppos
    • Cables & Housing
    • Cassettes, Freewheels & Cogs
    • Chain Guards & Bash Guards
    • Chainrings & BMX Sprockets
    • Chains
    • Cranksets
    • Electric Bicycle Components
    • Forks
    • Front Derailleurs
    • Handlebar Grips, Tape & Pads
    • Handlebars
    • Headset Spacers
    • Headsets
    • Hubs
    • Other Bike Components & Parts
    • Pedals
    • Pegs
    • Rear Derailleurs
    • Rear Shocks
    • Rims
    • Saddles & Seats
    • Seatpost Clamps
    • Shifters
    • Skewers
    • Spokes
    • Stems
  • ProMax Full Carbon 400mm Seatpost 31.6 Anti-slip clamp - Image 1 of 1

    ProMax Full Carbon 400mm Seatpost 31.6 Anti-slip clamp

    Brand New · PROMAX
    S$ 56.52
    or Best Offer
    S$ 41.98 shipping
    2⁣⁣⁣7⁣ ⁣⁣4⁣⁣⁣S⁣⁣ ⁣⁣Y⁣8⁣ ⁣Q⁣K⁣⁣⁣⁣⁣⁣⁣ ⁣⁣Q⁣D⁣
    • Promax Straight Seatpost 30.9 x 370mm MTB Road Gravel Bike Seat Post - Image 1 of 3
    • Promax Straight Seatpost 30.9 x 370mm MTB Road Gravel Bike Seat Post - Image 2 of 3
    • Promax Straight Seatpost 30.9 x 370mm MTB Road Gravel Bike Seat Post - Image 3 of 3

    Promax Straight Seatpost 30.9 x 370mm MTB Road Gravel Bike Seat Post

    Pre-Owned · PROMAX
    S$ 15.66
    S$ 36.28 shipping
    ⁣⁣F⁣⁣⁣⁣H⁣⁣⁣⁣ ⁣⁣⁣1⁣4⁣⁣⁣⁣ ⁣⁣L⁣⁣⁣0⁣ ⁣5⁣I⁣⁣
    • Promax Seatpost 30.9mm 350mm 15mm Setback Black 2-Bolt - Image 1 of 4
    • Promax Seatpost 30.9mm 350mm 15mm Setback Black 2-Bolt - Image 2 of 4
    • Promax Seatpost 30.9mm 350mm 15mm Setback Black 2-Bolt - Image 3 of 4
    • Promax Seatpost 30.9mm 350mm 15mm Setback Black 2-Bolt - Image 4 of 4

    Promax Seatpost 30.9mm 350mm 15mm Setback Black 2-Bolt

    Pre-Owned · PROMAX
    S$ 32.32
    S$ 65.15 shipping
    S⁣3⁣6⁣p⁣ ⁣o⁣n⁣1⁣s⁣X⁣o⁣ ⁣O⁣3⁣ ⁣r⁣J⁣I⁣ ⁣е⁣X⁣R⁣d⁣⁣⁣⁣⁣⁣
    • PROMAX SEAT POST 28.6 #O3 - Image 1 of 2
    • PROMAX SEAT POST 28.6 #O3 - Image 2 of 2

    PROMAX SEAT POST 28.6 #O3

    Pre-Owned · PROMAX
    S$ 14.06
    or Best Offer
    S$ 44.65 shipping
    9⁣S⁣A⁣ ⁣p⁣o⁣J⁣n⁣9⁣ ⁣s⁣8⁣o⁣r⁣W⁣ ⁣е⁣d⁣9⁣L⁣⁣ ⁣L⁣⁣⁣6⁣ ⁣⁣
  • Pro Max bicycle bike seatpost 31.6mm x 350mm 0mm Zero setback black alloy - Image 1 of 4

    Pro Max bicycle bike seatpost 31.6mm x 350mm 0mm Zero setback black alloy

    Pre-Owned · PROMAX
    S$ 36.41
    or Best Offer
    S$ 42.77 shipping
    2⁣S⁣p⁣o⁣7⁣ ⁣n⁣6⁣U⁣ ⁣L⁣J⁣ ⁣s⁣9⁣o⁣C⁣ ⁣r⁣C⁣е⁣I⁣ ⁣P⁣⁣d⁣ ⁣⁣
  • Promax Straight Seatpost 30.9 x 370mm MTB Road Gravel Bike Seat Post - Image 1 of 3

    Promax Straight Seatpost 30.9 x 370mm MTB Road Gravel Bike Seat Post

    Pre-Owned · PROMAX
    S$ 14.75
    Was: S$ 19.67was - S$ 19.67
    S$ 43.40 shipping
    S⁣0⁣p⁣o⁣n⁣s⁣о⁣V⁣r⁣e⁣ ⁣d⁣7⁣⁣R⁣⁣ ⁣⁣7⁣⁣O⁣⁣⁣⁣⁣ ⁣Z⁣⁣
  • Promax Seat Post Black Clamp 30 X 300mm Length Mountain Bike Aluminium - Image 1 of 4

    Promax Seat Post Black Clamp 30 X 300mm Length Mountain Bike Aluminium

    Pre-Owned · PROMAX
    S$ 7.31
    or Best Offer
    S$ 27.31 shipping
    ⁣⁣⁣⁣⁣B⁣⁣I⁣ ⁣V⁣⁣⁣⁣⁣L⁣⁣⁣ ⁣⁣⁣⁣Z⁣⁣⁣⁣⁣R⁣ ⁣
  • Promax SP-1 Seatpost 31.6 400mm 20mm Setback 2 Bolt Blue Anodized Aluminum - Image 1 of 3

    New ListingPromax SP-1 Seatpost 31.6 400mm 20mm Setback 2 Bolt Blue Anodized Aluminum

    Pre-Owned · PROMAX
    S$ 21.07
    S$ 37.31 shipping
    ⁣⁣G⁣⁣⁣⁣K⁣⁣ ⁣E⁣Y⁣⁣ ⁣⁣E⁣⁣8⁣⁣ ⁣⁣0⁣⁣⁣⁣X⁣ ⁣⁣S⁣
  • PROMAX - SEAT POST - CARBON - 27.2 x 300mm. - NEW - Image 1 of 4

    PROMAX - SEAT POST - CARBON - 27.2 x 300mm. - NEW

    New (Other) · PROMAX
    S$ 77.32
    or Best Offer
    S$ 56.77 shipping
    M⁣⁣T⁣ ⁣9⁣1⁣⁣ ⁣E⁣8⁣ ⁣6⁣⁣⁣F⁣⁣ ⁣⁣⁣⁣⁣K⁣⁣⁣S⁣ ⁣K⁣⁣
  • PROMAX 27.2X350mm SEAT POST W/BLACK SEAT BIKE PARTS 412-8 - Image 1 of 4

    PROMAX 27.2X350mm SEAT POST W/BLACK SEAT BIKE PARTS 412-8

    New (Other) · PROMAX
    S$ 56.22
    S$ 30.85 shipping
    ⁣H⁣K⁣⁣ ⁣I⁣⁣N⁣⁣ ⁣W⁣0⁣⁣⁣ ⁣⁣⁣⁣R⁣⁣⁣5⁣⁣⁣ ⁣W⁣X⁣⁣
  • PROMAX SEAT POST 30.9 MM 140 GRAMS 25 CM LENGTH - Image 1 of 4

    PROMAX SEAT POST 30.9 MM 140 GRAMS 25 CM LENGTH

    Pre-Owned · PROMAX
    S$ 28.12
    S$ 25.31 shipping
    W⁣⁣⁣E⁣⁣ ⁣D⁣⁣⁣⁣2⁣⁣ ⁣⁣1⁣J⁣⁣ ⁣D⁣R⁣ ⁣Y⁣5⁣ ⁣A⁣⁣ ⁣⁣
  • PROMAX ISO BLACK 27.2mmX350mm SEATPOST W/BLACK SEAT BIKE PARTS 412-1 - Image 1 of 4

    PROMAX ISO BLACK 27.2mmX350mm SEATPOST W/BLACK SEAT BIKE PARTS 412-1

    New (Other) · PROMAX
    S$ 49.19
    S$ 30.63 shipping
    C⁣⁣⁣K⁣ ⁣Q⁣7⁣⁣ ⁣⁣⁣Y⁣O⁣⁣⁣⁣ ⁣Q⁣9⁣⁣ ⁣O⁣⁣⁣⁣⁣⁣N⁣
  • Promax Alloy Seatpost 30.9mm x 350mm - Image 1 of 4

    Promax Alloy Seatpost 30.9mm x 350mm

    Pre-Owned · PROMAX
    S$ 18.98
    S$ 29.75 shipping
    ⁣6⁣G⁣ ⁣M⁣J⁣⁣ ⁣⁣0⁣⁣⁣⁣⁣I⁣⁣ ⁣T⁣⁣X⁣⁣⁣⁣ ⁣⁣N⁣⁣⁣
  • PROMAX bicycle bike seatpost 31.6mm x 350mm 20mm setback black alloy - Image 1 of 4

    PROMAX bicycle bike seatpost 31.6mm x 350mm 20mm setback black alloy

    Pre-Owned · PROMAX
    S$ 36.41
    or Best Offer
    S$ 42.77 shipping
    S⁣p⁣o⁣P⁣7⁣ ⁣n⁣S⁣6⁣s⁣o⁣ ⁣H⁣X⁣r⁣ ⁣0⁣E⁣ ⁣е⁣6⁣d⁣5⁣ ⁣I⁣⁣⁣⁣
  • Promax Seatpost 30.9mm x 400mm Black 2 Bolt - Image 1 of 4

    Promax Seatpost 30.9mm x 400mm Black 2 Bolt

    Pre-Owned · PROMAX
    S$ 46.38
    S$ 30.55 shipping
    S⁣p⁣o⁣E⁣F⁣n⁣ ⁣s⁣o⁣9⁣r⁣е⁣7⁣d⁣ ⁣X⁣0⁣ ⁣S⁣⁣W⁣ ⁣⁣4⁣⁣7⁣⁣⁣
  • PROMAX ISO BLACK ALUMINUM SEAT POST 25.4 X 350 BIKE PARTS 338-1 - Image 1 of 4

    PROMAX ISO BLACK ALUMINUM SEAT POST 25.4 X 350 BIKE PARTS 338-1

    New (Other) · PROMAX
    S$ 35.13
    S$ 30.23 shipping
    C⁣⁣K⁣⁣ ⁣⁣⁣C⁣⁣U⁣⁣⁣⁣ ⁣X⁣⁣⁣⁣⁣0⁣ ⁣5⁣X⁣⁣⁣⁣⁣⁣
  • PROMAX 31.6mmX400mm ALUMINUM POST W/BLACK SEAT BIKE PARTS 49-3 - Image 1 of 4

    PROMAX 31.6mmX400mm ALUMINUM POST W/BLACK SEAT BIKE PARTS 49-3

    New (Other) · PROMAX
    S$ 42.16
    S$ 30.42 shipping
    W⁣⁣J⁣⁣⁣⁣⁣⁣⁣⁣ ⁣Y⁣3⁣⁣ ⁣D⁣⁣⁣M⁣⁣ ⁣⁣⁣⁣⁣⁣R⁣7⁣
  • PROMAX ISO 31.6mmX400mm ALUMINUM SEAT POST W/BLACK SEAT BIKE PARTS 412-4 - Image 1 of 4

    PROMAX ISO 31.6mmX400mm ALUMINUM SEAT POST W/BLACK SEAT BIKE PARTS 412-4

    New (Other) · PROMAX
    S$ 56.22
    S$ 30.85 shipping
    0⁣U⁣⁣⁣ ⁣E⁣E⁣ ⁣N⁣C⁣⁣⁣ ⁣G⁣8⁣ ⁣⁣⁣⁣5⁣G⁣ ⁣⁣⁣O⁣⁣ ⁣⁣
  • PROMAX 28.6MM ALUMINUM BICYCLE SEAT POST PARTS 647 - Image 1 of 4

    PROMAX 28.6MM ALUMINUM BICYCLE SEAT POST PARTS 647

    New (Other) · PROMAX
    S$ 28.10
    S$ 30.02 shipping
    3⁣T⁣ ⁣⁣U⁣⁣S⁣⁣⁣ ⁣P⁣L⁣ ⁣N⁣Z⁣ ⁣G⁣8⁣⁣ ⁣⁣U⁣⁣⁣ ⁣⁣⁣ ⁣
  • PROMAX 31.6mmX350mm ALUMINUM SEAT POST W/BLACK SEAT BIKE PARTS 4-19 - Image 1 of 4

    PROMAX 31.6mmX350mm ALUMINUM SEAT POST W/BLACK SEAT BIKE PARTS 4-19

    New (Other) · PROMAX
    S$ 49.19
    S$ 30.63 shipping
    5⁣⁣⁣⁣F⁣ ⁣6⁣⁣⁣J⁣⁣⁣⁣ ⁣A⁣F⁣ ⁣A⁣I⁣⁣ ⁣N⁣G⁣ ⁣J⁣⁣⁣⁣
  • Promax SP-1 Seatpost - 27.2 x 350mm, Black Road MTB Gravel Bike Seat Post - Image 1 of 4

    Promax SP-1 Seatpost - 27.2 x 350mm, Black Road MTB Gravel Bike Seat Post

    Pre-Owned · PROMAX
    S$ 44.96
    S$ 30.51 shipping
    ⁣W⁣T⁣⁣⁣⁣ ⁣⁣⁣5⁣Z⁣⁣⁣⁣⁣⁣⁣ ⁣G⁣⁣⁣⁣⁣⁣J⁣⁣⁣⁣
  • PROMAX ISO BLACK ALUMINUM SEAT POST 31.6X350 BIKE PARTS 758 C46 - Image 1 of 3

    PROMAX ISO BLACK ALUMINUM SEAT POST 31.6X350 BIKE PARTS 758 C46

    New (Other) · PROMAX
    S$ 56.22
    S$ 30.85 shipping
    ⁣5⁣2⁣⁣⁣⁣ ⁣⁣⁣5⁣⁣⁣X⁣⁣⁣ ⁣W⁣⁣⁣⁣I⁣⁣ ⁣R⁣M⁣ ⁣⁣⁣
  • PROMAX 31.6mmX350mm ALUMINUM SEAT POST W/BLACK SEAT BIKE PARTS 412-3 - Image 1 of 4

    PROMAX 31.6mmX350mm ALUMINUM SEAT POST W/BLACK SEAT BIKE PARTS 412-3

    New (Other) · PROMAX
    S$ 56.22
    S$ 30.85 shipping
    ⁣⁣W⁣⁣⁣K⁣⁣⁣⁣⁣ ⁣S⁣⁣O⁣ ⁣Y⁣K⁣ ⁣I⁣F⁣⁣⁣ ⁣0⁣C⁣ ⁣⁣⁣
  • Promax Seatpost 30.9mm x 400mm Black - Image 1 of 4

    Promax Seatpost 30.9mm x 400mm Black

    Pre-Owned · PROMAX
    S$ 39.35
    S$ 30.35 shipping
    7⁣S⁣ ⁣⁣⁣⁣H⁣K⁣ ⁣U⁣⁣⁣D⁣⁣ ⁣V⁣0⁣⁣ ⁣3⁣K⁣ ⁣⁣⁣ ⁣⁣⁣⁣
  • Promax 30.9 X 370mm Aluminum Seatpost Black Used - Image 1 of 4

    Promax 30.9 X 370mm Aluminum Seatpost Black Used

    Pre-Owned · PROMAX
    S$ 21.09
    or Best Offer
    S$ 96.11 shipping
    A⁣8⁣⁣ ⁣Q⁣D⁣⁣⁣ ⁣⁣⁣U⁣⁣8⁣ ⁣8⁣⁣1⁣⁣ ⁣D⁣⁣F⁣⁣ ⁣E⁣⁣⁣
  • PROMAX EXT BLACK ALUMINUM SEAT POST 31.6X350 BIKE PARTS 758 C47 - Image 1 of 4

    PROMAX EXT BLACK ALUMINUM SEAT POST 31.6X350 BIKE PARTS 758 C47

    New (Other) · PROMAX
    S$ 56.22
    S$ 30.85 shipping
    ⁣⁣⁣⁣⁣Y⁣⁣⁣⁣⁣A⁣ ⁣V⁣Z⁣ ⁣⁣⁣Q⁣⁣Z⁣⁣⁣⁣ ⁣⁣⁣L⁣M⁣
  • PROMAX Seatpost, Silver 27.2 MTB Mountain Bike - Image 1 of 4

    PROMAX Seatpost, Silver 27.2 MTB Mountain Bike

    Pre-Owned · PROMAX
    S$ 35.85
    or Best Offer
    S$ 100.76 shipping
    ⁣⁣S⁣⁣⁣A⁣⁣ ⁣⁣X⁣C⁣ ⁣⁣7⁣T⁣ ⁣H⁣I⁣⁣⁣ ⁣⁣G⁣⁣⁣⁣⁣6⁣
  • PROMAX ISO BLACK 27.2mmX350mm SEATPOST W/BLACK SEAT BIKE PARTS 20-3 - Image 1 of 4

    PROMAX ISO BLACK 27.2mmX350mm SEATPOST W/BLACK SEAT BIKE PARTS 20-3

    Pre-Owned · PROMAX
    S$ 49.19
    S$ 30.63 shipping
    2 watching
    6⁣⁣P⁣⁣⁣ ⁣⁣H⁣J⁣ ⁣⁣1⁣M⁣⁣ ⁣0⁣⁣⁣⁣⁣4⁣⁣⁣⁣ ⁣⁣⁣⁣
  • PROMAX BLACK ALUMINUM SEAT POST 31.6 X 400 BIKE PARTS 584-2 - Image 1 of 4

    PROMAX BLACK ALUMINUM SEAT POST 31.6 X 400 BIKE PARTS 584-2

    New (Other) · PROMAX
    S$ 35.13
    S$ 55.24 shipping
    ⁣⁣Y⁣⁣⁣⁣⁣⁣L⁣ ⁣H⁣⁣I⁣ ⁣S⁣7⁣⁣⁣ ⁣D⁣C⁣ ⁣⁣⁣L⁣H⁣ ⁣⁣
  • PROMAX ISO BLACK ALUMINUM SEAT POST 31.6X350 W/SEAT BIKE PARTS 9-15 - Image 1 of 4

    PROMAX ISO BLACK ALUMINUM SEAT POST 31.6X350 W/SEAT BIKE PARTS 9-15

    Pre-Owned · PROMAX
    S$ 42.16
    S$ 55.43 shipping
    3 watching
    ⁣X⁣⁣I⁣ ⁣⁣⁣⁣N⁣W⁣⁣⁣ ⁣⁣⁣⁣4⁣A⁣⁣⁣ ⁣G⁣⁣7⁣ ⁣S⁣5⁣⁣
  • PROMAX ISO BLACK ALUMINUM SEAT POST 30.9 X 357mm 10Nm, Minimally Used - Image 1 of 3

    PROMAX ISO BLACK ALUMINUM SEAT POST 30.9 X 357mm 10Nm, Minimally Used

    Pre-Owned · PROMAX
    S$ 35.08
    or Best Offer
    S$ 67.82 shipping
    L⁣6⁣⁣⁣⁣ ⁣W⁣⁣8⁣ ⁣C⁣⁣⁣D⁣ ⁣⁣7⁣⁣7⁣ ⁣⁣1⁣⁣X⁣ ⁣O⁣⁣⁣
  • All Listings
  • Auction
  • Buy It Now
  • Best Match
  • Time: ending soonest
  • Time: newly listed
  • Price + Shipping: lowest first
  • Price + Shipping: highest first
  • Distance: nearest first
  • List View
  • Gallery View

31 results

Sort: Best Match

  • Best Match
  • Time: ending soonest
  • Time: newly listed
  • Price + Shipping: lowest first
  • Price + Shipping: highest first
  • Distance: nearest first
    • Brand: PROMAX- Selected
    • Seatpost Type: Plain Seatpost- Selected
    Clear All