Seatposts

The OneUp Dropper post is available in 120mm, 150mm, 180mm and 210mm lengths and all can be shimmed down in travel by 10 or 20mm. We've been obsessed with shaving every last millimeter from the latest OneUp post to give you the the shortest stack height and shortest total length of any dropper post. No other post can get your saddle lower. Starting from $199 USD with free shipping worldwide, cable actuated with reliable sealed cartridge internals for easy home servicing and includes travel adjust shims allow you to custom tune your post to dial in your perfect length. The dropper market is dominated by expensive big brand posts and generic catalog shopped posts with different logos. We want to offer something better, a post with class leading specs, innovative useful features AND real value. Want more from your dropper? Get OneUp. FEATURES - Travel adjust shims allow you to custom tune your post to dial in your perfect length. - Cable actuated for easy installation and a simple no bleed remote - Ergonomic remote paddle position - Reliable sealed cartridge internals - User replaceable cartridge only $60 USD - Easy to service at home - 2 year warranty UPDATES - Shortest total length of any dropper - Shortest stack height of any dropper - New upper DU Bushing in the upper collar - Increased bushing overlap and durability - 100-210mm post lengths in 10mm increments. - 20g lighter SPECS - Drop 120mm, 150mm, 180mm, 210mm adjustable*. - Diameter 30.9, 31.6, 34.9 - Routing Internal only Remote Compatibility: - SRAM Matchmaker X - SRAM MMX clamps - Shimano I-spec-EV - 12 speed XTR M9100, XT M8100 and SLX M7100 - Shimano I-spec II - 11 speed XTR M9000, XT M8000, SLX M8000 only - 22.2mm Bar Clamp - All other groups 10 speed SHIMANO - Cable clamping remote only (post requires cable stop to be assembled at base of post) - Travel Reducing Shim Reduces travel by up to 20mm. Weight Post Only - (30.9) 120mm 435g / 150mm 480g / 180mm 525g / 210mm 570g - (31.6) 120mm 450g / 150mm 500g / 180mm 545g / 210mm 590g - (34.9) 120mm 545g / 150mm 605g / 180mm 660g / 210mm 710g Remote Only - Remote with 22.2mm Bar Clamp - 46g - Remote with SRAM Matchmaker X / I-spec-EV - 43g - Remote with Shimano I-spec-EV - 43g - Remote with Shimano I-spec II - 41g - Housing and Cable (1300mm installed length) - 50g

The lightest, longest, smoothest, and most reliable dropper post that will fit your bike. The V3 is the lightest infinitely-adjustable dropper post on the market, it has the shortest total length and stack height of any dropper post, an extended 350-hour service interval, and new ultra-low friction IGUS® bushings and SKF® seals. Plus, save an additional 10g with our Titanium Bolt Upgrade Kit.

For over a decade, FOX has led the way in dropper post innovation. The latest iteration, the Transfer Neo, takes it even further with a longer drop, lower stack height, greater tire clearance, and faster actuation, all powered by the new Neo wireless protocol. The Neo wireless system is designed to be over 100x faster than Bluetooth, delivering near-instantaneous response with virtually zero latency. Coupled with the 2025 Transfer’s incredibly robust internal sealing design, adjustability, and proven durability, Transfer Neo truly rises above. - Fastest actuating wireless dropper on the market, and ultra-low latency makes micro-adjusting your seat height to suit varying terrain super precise - 47mm stack height (only 11mm more than a standard Transfer) and optimized battery placement for better tire clearance - FOX-specific battery provides 30 to 40 hours of battery life, depending on frequency of dropper post actuation, with 1.25 hr to 1.5 hr charge time using the included dock and USB-A to USB-C cable - Fully supported by the FOX Bike app. Riders can quicky access an overview of Transfer Neo components, download firmware updates, and activate useful features like Bike Park Mode, Transport Mode, and monitor service interval tracking - Wireless lever is designed to be as familiar a feeling as possible. A rubber-coated thumb pad mimics the texture and distance from the handlebar of a regular Transfer lever, but with a shorter, 6x lever throw reduction for smoother operation - Lever features pairing buttons and LED indicator, utilizing a CR2032 battery with a 12-month life and tool-free replacement - Standard 22.2mm, Matchmaker and I-Spec EV clamping options included with post - Schrader valve on the top of the post, making for easy pressure adjustments to suit terrain or rider preference, or to compensate for pressure loss over time - Transfer Neo has the same sleek new head design as the mechanical Transfer, providing ultra-low stack and bullet-proof 2-bolt security and infinite angle adjustment

The Transfer continues the excellent reputation of smooth function and great reliability with an infinitely adjustable height design, and internal or external cable routing options. Low lever force and great modulation make it easy to regulate return speed and small height adjustments. - Cable actuated with tool-free quick disconnect for easier installation and removal - Low lever force provides consistent actuation pressure even with saddle weighted or unweighted - Easy to modulate return speed with lever - Remote lever sold separately Specifications: - Diameter: 30.9 - Travel (mm): 125 mm - Length: 411 mm - Max Height: 310 mm - Min Height: 200 mm - Offset (mm): 0 mm - Actuation: Cable Remote - Cable Routing: External - Color: Black - Defined Color: Black - Clamp Style: Std Rails

- 6061 cold forged aircraft grade aluminum alloy clamp - Cold drawn 6061-T6 extruded outer tube and inner shaft - The spring preload is easy to adjust with a single hex wrench, to fit the rider's weight - The slider rests on Teflon bushings, for a smooth, effortless operation - Travel: 40mm

- Alloy seatpost with alloy bracket - Length: 400mm - 20mm offset

- 45mm travel - 30.9mm seatpost diameter - 350mm length - 60 to 180kg rider weight - Adjustable suspension pre-load via hex key adjuster - High-quality broached internal keyways provide many years of trouble-free use - 15mm offset - 2-bolt clamp

A clever seatpost with a neat comfort-orientated trick up its sleeve — 40mm of plush sprung-travel designed to help smooth out any undulations or broken road surfaces. - Neutral 15mm offset that's perfectly suited to a wide range of bikes - Adjustable preload to fine-tune for rider weight - Forged aluminum clamp head with a 6061-T6 aluminum shaft - Simple single bolt clamp head for easy fitting and adjustments - Conforms/exceeds ISO-C (City & Trekking) test standards

The carbon Service Course SL seatpost is specifically tuned to be more shock absorbing than the "comfort" seatposts on the market, while still passing our strict internal MTB strength test. Flex engineered into the lightweight carbon tube keeps the rider comfortable over any terrain. Better fit means better performance, and if your saddle is out of position, you'll waste energy with every pedal stroke. The secure, two-bolt clamp makes for easy micro-adjustments of saddle position, and the head has been redesigned for maximum bolt-head accessibility. The Service Course SL seatpost makes it possible for nearly any rider to achieve the perfect fit, and the clamp works with all saddle rail types. - Distinctive Zipp cosmetics - Unidirectional Carbon fiber tuned for ride comfort - Lightweight clamping system - Lifetime warranty

On today's road bikes, silver stands out amid the sea of stealthy black color schemes. This time-honored seatpost color is available on the Zipp Service Course Seatpost. Since the introduction of our line of Service Course and Service Course SL components, we've had amazing success with our pro-level athletes in all disciplines. While the successes have reinforced our design decisions, we have also drawn from their feedback. We not only learned how and why athletes make their equipment choices, but how our manufacturing methods and materials affect product performance. With new knowledge as well as new engineering, we are proud to offer redesigned Service Course seatposts. - Material: 6061 aluminum - 2-bolt adjustability - Minimum insertion length: 90mm

The Wolf Tooth Resolve Dropper Post is the first dropper post to use a self-bleeding cartridge. It has the shortest stack height of any dropper post on the market, has a short insertion depth, is one of the lightest dropper posts, and is completely serviceable at home. - Self-Bleeding Resolve Cartridge: At the heart of Resolve Dropper Post is a self-bleeding cartridge that removes air from the fluid chamber with every actuation. All dropper posts can get air in the chamber, which leads to sag and squish. Resolve Dropper Post is the only dropper post that purges air from the chamber, which means you'll never need to buy a new cartridge as you do with all other dropper posts. - Shortest Stack Height: The shortest stack height of any dropper post means that Resolve can get your saddle lower than any other dropper post. The lower your saddle, the more room you have to maneuver your bike on drops and techy descents. - Weight and weight per travel is equal to the best: Resolve Dropper Post is one of the most lightweight dropper posts on the market when it comes to grams per millimeter of travel. It's as much as 26% lighter than other dropper posts of the same travel size. - Short Insertion Length: When a dropper post has a short insertion length, longer travel options are unlocked for more bikes. A short insertion length is vital for smaller bikes, frames with curved seat tubes, and frames with seat tubes that have bottle bosses. - Travel Reduction with Spacers: The travel length of your Resolve dropper post can be customized in order to suit your bike and saddle height. Spacer kits are sold separately or those who would like to have the adjustment made later by their local shop mechanic. If you are comfortable with working on suspension components, you may be able to complete the installation yourself.

The new Reverb AXS XPLR dropper post delivers more control, confidence, and fun on gravel roads everywhere. Getting the saddle out of the way means more room to move, saving you from awkward maneuvering and sketchy descents. We created an all-new design complete with lightweight air-only internals featuring built-in compliance we call ActiveRide. It's like travel for your saddle. Enabled by SRAM AXS technology, Reverb AXS XPLR is part of the ultimate personalized cockpit. - New 27.2mm Reverb AXS XPLR delivers more control, confidence, and fun for gravel - ActiveRide—Air only internals provide a fully rigid top-out position. With the touch of your AXS controller, you've got built-in compliance to ensure comfort and control over the roughest sections of gravel - Two travel options to choose—50mm or 75mm - Saddle clamp options compatible with 7x10 oval carbon rails. - Seat post length includes 400mm and 350mm (50mm drop only) - AXS Technology allows rider customization via the AXS Mobile App - AXS handlebar controls (drop or flat bar) - Shared battery with all other SRAM AXS enabled components - System is completely waterproof and dustproof to IP69K—take it anywhere - SRAM AXS battery and charger included SPECIFICATIONS: - TRAVEL: 50mm, 75mm - POST DIAMETER: 27.2mm - POST LENGTH: 350mm, 400mm - REMOTE: AXS Controller Sold Separately - SADDLE RAIL COMPATIBILITY: Round/Oval (7x9 & 7x10), Round/Oval (7x9) - WEIGHT (G): 562 - WEIGHT BASED ON: 75mm Travel 400mm Length W/O battery - Battery 25g

Our intention with Reverb AXS was inventive and pure: No hoses. No routing. No energy wasted. Not a single thing in the way of the experience. We created a reliable wireless-electronic dropper post and controller that actuates with drastically less effort and zero distraction. Expanding what's possible on a bike, Reverb AXS is enabled by SRAM AXS technology, a new level of interaction, personalization, and connectivity across all AXS-enabled components. - Effortless Electronic-Wireless actuation and infinite height adjustment with a single touch. - Clean, simple and fast to install. No hoses to route, no fishing required. - Updated internals for faster return speed in all conditions. - New Vent Valve Technology, a simple and reliable built in service solution without disassembly of the seatpost. - SRAM AXS technology, a new level of interaction, personalization, and connectivity across all AXS-enabled components. - Includes RockShox AXS handlebar controller, rechargeable SRAM battery, and charger.

Reverb AXS completes the AXS ecosystem by giving the rider customizable controls, easy install, and a shared battery, charger, and controller. Built for GX, X0, and XX riders, Reverb AXS ensures smooth control and reliability for every rider running a 100mm up to a 250mm dropper post, all with improved battery clearance. Features: - Travel options include 100mm, 125mm, 150mm, 175mm, 200mm, 225mm, 250mm - NEW air-over-air design that is more robust and durable - ActiveRide provides a compliant platform for technical E-MTB climbs when not in fully extended rigid position - Compatible with all saddle rail types (7x7, 7x9x, and 7x10) CONTROLLER SOLD SEPARATELY - Compatible with all AXS controllers

The intention with Reverb AXS was inventive and pure. No hoses. No routing. No energy wasted. Not a single thing in the way of the experience. RockShox created a reliable wireless electronic dropper post that actuates with drastically less effort and zero distraction. Expanding what's possible on a bike, Reverb AXS is enabled by SRAM AXS technology, a new level of interaction, personalization, and connectivity across all AXS-enabled components. - AXS technology allows for customization to an individual rider’s liking via the AXS Mobile App - Lower friction IFP allows for faster actuation of the post and less force needed - Vent Valve Technology allows for super simple service if the need arises without any disassembly of the post - Includes battery and charger, shared with all other SRAM AXS-enabled components - Required AXS Controller Sold Separately - System is completely water and dust proof to IPX7

New Guts, New Glory Don't let its familiar good looks fool you—Reverb is a whole new weapon. Its internals have been completely re-engineered to improve on its already legendary performance and to offer enhanced reliability: all the smallest details, down to the single seal, have been re-evaluated and updated to pass the hardest and longest durability tests. Additional bushing overlap also improves performance over time, while new 150- and 170-millimeter travel options are available to tame even the gnarliest of descents. This is the brand-new Reverb, engineered for the next-generation mountain biker. - Internal cable routing keeps your bike sleek and uncluttered - Completely redesigned internals with new SKF internal floating piston - Improved performance and durability in all conditions - 150mm and 170mm travel options available in all diameters - Increased bushing overlap - New dedicated post length per travel length - WEIGHT: 560g (weight based on 340mm post, 30.9mm diameter, 100mm travel, MMX remote with shifter hardware and 1300mm hose) - LENGTH: 340mm, 390mm, 440mm, 480mm - COLORS: Black - MATERIAL: Shaft: 3D forged 7050 alloy , Head: 7050 forged alloy - OTHER: Zero Offset , Remote: Adjustable return speed at the handlebar, Discrete or Match Maker X, Left or right

The Reverb Stealth features Vent Valve Technology for super simple service if the need arises. Redesigned internals provide effortless actuation and increased reliability. With reduced overall post lengths and new travel options, riders of all shapes and sizes benefit from more travel than ever before. The new Reverb Stealth redefines what it means to simply go up and down. - Shorter overall post length - Stealth Internal cable routing

Gold standard carbon seatpost for converting road bike frame geometry into a more aggressive aero position. Profile's Fast Forward Carbon Seatpost effectively changes a 73-degree seat tube angle to 78 degrees and moves your saddle forward up to 38mm. Made with multi-layer, multi-directional carbon weave, the Fast Forward is super light, too. Plus, its double-bolt micro-adjustable clamp is easy to use and super secure.

- LEV CI takes rhythm from the trail and injects it straight into your soul. - 65-175 millimeters of perfect drop are just enough to turn your ride up to eleven. - A full unidirectional carbon mast routes our Recourse II Ultralight Cable System directly through your frame to our KGSL lightweight remote – a combination saving over 50g compared to our KG ALLOY remote and standard shift cable. - The result is clean lines for you and your bike. LEV CI’s newly designed cable interface system is easier to setup and service while at the other end, a high compression-molded head connects LEV CI to your saddle. - Our patented one-way roller clutch bearing and highly evolved seal collar keep LEV CI running smooth and free of side-play for thousands of miles and vertical feet.

- Up to 200mm of vertical travel adjustability with limitless positioning - Tool-free adjustable travel design which let you adjust the travel by 5mm increment depending of rider's preference - Internal cable routing only - Clamp design compatible with standard 7mm (alloy) or 9mm (carbon) saddle rails - Includes 1x remote lever Travel option: - 95-120mm - 120-150mm - 140-170mm - 170-200mm

Included spacers provide travel adjustability in 3, 4, 5 or 10mm increments, Integrated storage channel to store backup adjustment spacers clean and neatly in place, Reduced chassis and insertion length on 100mm and 150mm travel posts for smaller frame sizes, Rotatable cable actuator for smooth cable routing and performance, Reduced collar height for even more drop, Redesigned ergonomic thumb control lever compatible with 1x control system, Lighter weight than previous model, Easily serviced with replaceable cartridge technology

The full-carbon Variant seatpost offers outstanding performance though optimal aerodynamics and ultra-light weight.

Built without compromise, the Highline 11 combines premium materials with our tried-and-trusted hydraulic IFP cartridge system, resulting in our lightest dropper post yet. Featuring a carbon quill, carbon head, and titanium hardware, the Highline 11 sheds up to 100 grams over our Highline 7, all without compromising on any features or construction. The post maintains all of your favorite elements such as infinite adjustment and a reliable hydraulic IFP. Built with every rider in mind, from cross country racer to weekend enduro rider the Highline 11 is available in travel lengths ranging from 60mm to 170mm allowing the rider to choose the perfect post for them.

The Highline 3 delivers infinite adjustment, smooth feel, and easy installation. Details - Premium Trelleborg sealing - Exclusive Igus LL-glide bearings and keys - Jagwire cable and housing - Self-contained hydraulic cartridge delivers industry-leading quality and reliability - Internal routing - Quick connect mechanism for ease of cable installation - Linear actuator for quick return speed - 2-bolt standard head - Remote sold separately

The all-new Highline delivers infinite adjustment, smooth feel, and easy installation for any bike. Details - Shorter insertion length to fit more bikes - Premium Trelleborg sealing - Exclusive Igus LL-glide bearings and keys - Jagwire cable and housing - Self-contained IFP hydraulic cartridge - Internal routing - Quick connect mechanism for ease of cable installation - Linear actuator for quick return speed - 2-bolt quick-connect head - Remote sold separately

The all-new Highline XC/Gravel delivers infinite adjustment, smooth feel, and easy installation. - 27.2mm seatpost diameter to fit most XC and gravel bikes - Jagwire cable and housing - Self-contained IFP hydraulic cartridge - Internal routing - Quick-connect mechanism for ease of cable installation - Linear actuator for quick return speed - 2-bolt standard head - Drop Bar Remote sold separately

Symmetry is a key component of sound design. King riders have, for years, paired our headsets with our bottom brackets and hubs, to provide a few, classy pops of color to their bikes. But that left them with no off-setting visual cue at the top of the bike to make the look more symmetrical. If this strikes you as a goofy way to think about your bike, fair enough, but it’s one of those things that bothered our eyes a little, and enough riders asked us to make a seat collar that we went ahead and designed one. Why You Want It: Because colors make you happy. Because what we wrote above about symmetry and balance makes sense to you. Because it’s another high-quality component you can use to show your bike how much you love it. Because it just looks great. - Aluminum collar with stainless steel bolt, washer, and barrel nut - Available in colors to match King components - Made in the USA - Lifetime Warranty - Maximum Torque is 6nm.

The latest generation Thudbuster LT is superior to its predecessor in every way.  Building on Thudbuster's proven parallel linkage technology we have completely re-designed the seatpost for increased durability, additional suspension travel, as well as ease of use through tool-free elastomer change and a single-bolt seat clamp design. By improving on this already legendary design, we're confident to say that the newest generation Thudbuster is the most advanced suspension seatpost ever made. - Travel: 90mm - Weight: 750g (31.6mm) - Max Rider Weight: 250lbs

The latest generation Thudbuster ST is superior to its predecessor in every way. Building on Thudbuster's proven parallel linkage technology we have completely re-designed the seatpost for increased durability, a higher rider weight limit, and additional suspension travel, as well as ease of use through tool-free elastomer change and a single-bolt seat clamp design. By improving on this already legendary design, we're confident to say that the newest generation Thudbuster is the most advanced suspension seatpost ever made. - Travel: 50mm - Weight: 580g - Max Rider Weight: 330lbs

Ride longer, ride farther with the eeSilk Carbon premium suspension seatpost. The eeSilk carbon is comparable in weight to traditional rigid performance seatposts while offering 20mm of vertical compliance improving control on rough surfaces and reducing fatigue on long rides. These posts make great enhancements to endurance road bikes by reducing the chatter transmitted from the surface to the rider and can be tuned to rider weight through a simple elastomer change. #5 elastomer comes pre-installed, other weight elastomers sold separately - Travel: 20mm - Length: 350mm - Weight: 295g (eeSilk Carbon 27.2) - Max Rider Weight: 250 lbs. - Offset: 8mm