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30.9- mm 430+ mm Bicycle Seatposts

The seatpost diameter must match to the seat tube diamater of your frame. If replacing a seatpost, you can usually find this measurement etched near the bottom of your current post.

Seatpost length is measured in millimeters. It is typically measured from the bottom of the post to the center of the rail mount.

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Showing 76 products:

OneUp Components Dropper Post, (180mm) 30.9x480mm
OneUp Components Dropper Post, (180mm) 30.9x480mm

New OneUp dropper line covers 100-210mm drops in 10mm increments Shortest overall length and stack height of any equal length dropper on … read more

$31 offretail $215.99 your price $184.99 + ships free

BuyBuyPART NUM 177602
KS Supernatural 30.9 Post 435/150mm Remote - OPEN BOX SPECIAL
KS Supernatural 30.9 Post 435/150mm Remote - OPEN BOX SPECIALKind Shock

Kindshock Height-Adjust Seatposts Micro-adjust, zero offset clamp Infinitely-adjustable ride height Carbon remote replaces an … read more

$69 offretail $366.00 your price $296.46

BuyBuyPART NUM 903421
Bike Yoke Divine SL Seatpost Without Remote, 125mm, 30.9 x 445mm, Black
Bike Yoke Divine SL Seatpost Without Remote, 125mm, 30.9 x 445mm, Black

Tailored to the needs of XC and marathon racers, the DIVINE SL is the youngest offspring of Bike Yoke dropper family. Based on the award-winning … read more

your price $320.00 + ships free

BuyBuyPART NUM 368258
KS LEV Dropper Seatpost - 30.9mm, 150mm, Black, Remote Not Included
KS LEV Dropper Seatpost - 30.9mm, 150mm, Black, Remote Not Included

The versatility of the LEV design allows clean cable routing on bikes not intended for dropper posts. When the remote is pushed, there is zero cable … read more

$29 offretail $299.00 your price $269.10 + ships free

BuyBuyPART NUM 605525
Bike Yoke Revive Seatpost without Remote, 185mm, 30.9 x 484mm, Black
Bike Yoke Revive Seatpost without Remote, 185mm, 30.9 x 484mm, Black

Self-serviceable dropper post with reset lever at the head Non-IFP design provides better reliability and extremely smooth action All … read more

your price $390.00 + ships free

BuyBuyPART NUM 582109
RockShox Reverb AXS Dropper Seatpost - 30.9mm, 150mm, Black
RockShox Reverb AXS Dropper Seatpost - 30.9mm, 150mm, Black RockShox

The RockShox Reverb AXS is optimized, motor driven, and paired with the next generation of electronic integration. It features Vent Valve Technology and … read more

$103 offretail $861.00 your price $757.68 + ships free

BuyBuyPART NUM 333810
Tranz-X Kitsuma LT Dropper Post, 150mm, 30.9 x 464mm, Black
Tranz-X Kitsuma LT Dropper Post, 150mm, 30.9 x 464mm, Black

External cable routing Low maintenance sealed hydraulic cartridge and coil spring 7075 alloy construction and hard anodized 26mm stanchion … read more

Currently Sold Out

your price $159.00 + ships free

InfoInfo
Tranz-X Kitsuma Air Dropper Seatpost, 150mm, 30.9 x 455mm, Black
Tranz-X Kitsuma Air Dropper Seatpost, 150mm, 30.9 x 455mm, Black

Internal routing Lightweight alloy air cartridge adds rebound adjustment 7075 aluminum construction Upgraded internal bushings … read more

$17 offretail $185.00 your price $168.00 + ships free

BuyBuyPART NUM 576550
Crank Brothers Highline 7 Dropper Seatpost - 30.9, 150mm, Black
Crank Brothers Highline 7 Dropper Seatpost - 30.9, 150mm, Black

The all-new Highline delivers infinite adjustment, smooth feel, and easy installation for any bike. Remote sold separately. Shorter insertion … read more

your price $299.99 + ships free

BuyBuyPART NUM 135407
Tranz-X Kitsuma LT Dropper Post, 170mm, 30.9 x 494mm, Black
Tranz-X Kitsuma LT Dropper Post, 170mm, 30.9 x 494mm, Black

Internal cable routing Low maintenance sealed hydraulic cartridge and coil spring 7075 alloy construction and hard anodized 26mm stanchion … read more

your price $159.00 + ships free

BuyBuyPART NUM 745080
Tranz-X Kitsuma LT Dropper Post, 170mm, 30.9 x 494mm, Black
Tranz-X Kitsuma LT Dropper Post, 170mm, 30.9 x 494mm, Black

External cable routing Low maintenance sealed hydraulic cartridge and coil spring 7075 alloy construction and hard anodized 26mm stanchion … read more

your price $159.00 + ships free

BuyBuyPART NUM 966434
Bike Yoke Revive Seatpost without Remote, 160mm, 30.9 x 467mm, Black
Bike Yoke Revive Seatpost without Remote, 160mm, 30.9 x 467mm, Black

Self-serviceable dropper post with reset lever at the head Non-IFP design provides better reliability and extremely smooth action All … read more

your price $320.00 + ships free

BuyBuyPART NUM 579762
X-Fusion Manic Dropper Seatpost - 30.9mm, 170mm, Black
X-Fusion Manic Dropper Seatpost - 30.9mm, 170mm, Black

The X-Fusion Manic post uses internal cable routing and was designed around a low-profile seat cradle and seal collar to fit a broad range of frames. … read more

your price $199.99 + ships free

BuyBuyPART NUM 232589
RaceFace Aeffect R Dropper Seatpost - 30.9 x 465mm, 170mm, Black
RaceFace Aeffect R Dropper Seatpost - 30.9 x 465mm, 170mm, Black

Introducing the Aeffect R Dropper Post. Yes it's budget friendly and a rock solid option for riders wanting a simple, trouble-free dropper post - but … read more

your price $214.99 + ships free

BuyBuyPART NUM 234584
Tranz-X Kitsuma Air Dropper Post, 170mm, 30.9 x 495mm, Black
Tranz-X Kitsuma Air Dropper Post, 170mm, 30.9 x 495mm, Black

Internal Routing Lightweight alloy air cartridge adds rebound adjustment 7075 aluminum construction Upgraded internal bushings … read more

$17 offretail $185.00 your price $168.00 + ships free

BuyBuyPART NUM 219248
Gusset Lofty XXL Seatpost, 30.9 X 450mm - Black
Gusset Lofty XXL Seatpost, 30.9 X 450mm - Black

Extra long forged 6061 aluminum post allowing maximum height adjustment 2-bolt micro-adjust clamp. 345g (27.2mm) Item Specifications … read more

your price $39.95 + ships free

BuyBuyPART NUM 150263
FOX Transfer Performance Dropper Seat Post - 30.9, 175 mm, Internal Routing, Anodized Upper
FOX Transfer Performance Dropper Seat Post - 30.9, 175 mm, Internal Routing, Anodized Upper

The Transfer continues the excellent reputation of smooth function and great reliability with an infinitely adjustable height design, and internal or … read more

your price $309.00 + ships free

BuyBuyPART NUM 894023
Crank Brothers Highline 3 Dropper Seatpost - 30.9, 150mm, Black
Crank Brothers Highline 3 Dropper Seatpost - 30.9, 150mm, Black

The all-new Highline delivers infinite adjustment, smooth feel, and easy installation for any bike. Remote sold separately. Self-contained hydraulic … read more

$19 offretail $199.00 your price $179.10 + ships free

BuyBuyPART NUM 119130
Bike Yoke Divine Seatpost Without Remote, 160mm, 30.9 x 467mm, Black
Bike Yoke Divine Seatpost Without Remote, 160mm, 30.9 x 467mm, Black

Auto-reset function: post resets automatically with every full drop Travel adjust via 5mm "clip-in" spacers to reduce the maximum drop length … read more

StarStarStarStarStar 5 of 5 ( 1 ) 5 of 5 stars ( 1 review )

your price $270.00 + ships free

BuyBuyPART NUM 326408
KS Rage-i Dropper Seatpost - 30.9mm, 190mm, Black
KS Rage-i Dropper Seatpost - 30.9mm, 190mm, Black

Rage-i is dropper performance at a never-before-seen value. Being our KS's entry-priced offering, Rage-i leaves nothing to compromise. Rage-i features … read more

$17 offretail $179.00 your price $161.10 + ships free

BuyBuyPART NUM 649029
Kind Shock

Kind Shock is an industry leader in suspension and dropper seat posts.

See all Kind Shock

RockShox

"An icon in the mountain bike industry."

See all RockShox

Thomson

Thomson is leading with innovative design for two primary markets - aerospace and cycling.

See all Thomson

We define color as the main color of the item. It may have accents or highlights in other colors.

Weight

In Store products are available to view in our showroom. In Store orders usually ship the same or next business day.

These models are available for online purchasing and can be shipped directly to you.

The seatpost diameter must match to the seat tube diamater of your frame. If replacing a seatpost, you can usually find this measurement etched near the bottom of your current post.

Seatpost length is measured in millimeters. It is typically measured from the bottom of the post to the center of the rail mount.

On a dropper post, this is the distance that the post will drop.

Dropper posts have the ability to change heights. This has become a choice for mountain bike riders that prefer multiple riding positions.

Seatpost Clamp Style

Clearance items can save you big.

Offset is often referred to as setback. This is the distance in mm that the clamp is offset from the center of the seatpost.

Our Lowest Price - This product is ineligible for additional discounts or rebates.

Seatpost Material

Rigid seatposts are the most common type of seatpost with no suspension or dropping capability.

Seatpost length is measured in millimeters. It is typically measured from the bottom of the post to the center of the rail mount.

Suspension seatposts are designed with comfort in mind.

Weight

Buy this product and your entire order ships for free.

Some orders are inelligible for delivery discounts. See offer details for disqualifying products and destinations.