Trek-compatible seat mast cap Offered in white and black and a variety of lengths and offsets, the mast cap includes hardware compatible with round saddle rails only. 7x10mm carbon rail-compatible hardware sold separately. Key features: - Ultra-light carbon construction - One bolt head design offers easy fore-aft and infinite angle adjustment - Compatible with all Trek road bikes with round seat masts - 175mm and 135mm lengths - 5mm and 20mm offsets - Aluminum clamp

• Aluminum • Coil spring provides plush suspension • Adjustable pre-load design • Micro-adjust seat clamp • 450 grams

- Forged aluminum - 7/8-inch seat-clamp diameter - 165 grams

• Forged aluminum • Integrated micro-adjust seat clamp

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.

The Coast dropper is the world's first Suspension Dropper Post, combining ride-smoothing suspension and the benefits of a dropper into one seatpost. This dropper is designed to help riders on all types of bikes, from packed-up trekkers, to the cross-country wanderers, even the weekday commuters. We developed the Coast because the earth isn't flat (no matter what those people on Twitter say)—it's kind of bumpy. And, while we all like coasting along on freshly paved roads, mountain paths are enticing, and potholes exist no matter how much we swear at them. The Coast Post was designed to soak up some of these vibrations. We accomplished this via 40mm of tunable air suspension housed in the internals to make your ride a bit smoother. While this post provides some relief from everyday chatter, it also comes with up to 120mm of drop. Most people associate dropper posts with mountain biking, but it turns out they're pretty jazzy on everything, from gravel bikes to trekking rigs and commuters. Let's face it, when your saddle is at the proper height for riding, dismounts can be…inelegant. A dropper post allows you to push a button and be in a flat-footed position when you want, easily returning you to the best saddle height for riding once you get going again. This can be great for starting and stopping in city traffic or getting on and off a bike packed up with stuff—or really, if your hips are just extra tight and creaky like ours. Plus when you're going downhill, a dropper easily gets the distraction of your seat out of the way, letting you lower your center of gravity. Not only does this put you in a safer riding position, it also makes descents more fun (we wish this safer-but-also-more-fun combo was true for more things in life). - Air Suspension: 40mm - Weights: 31.6/30.9 External routing - 615g, 31.6/30.9 Internal routing - 610g, 27.2 External routing - 540g, 27.2 Internal routing - 535g - Cable Routing: Internal - Cartridge: 2-chamber hydraulic and adjustable air - Lever sold separately - 3-year warranty - Perfect for commuters, gravel bikes, or hardtail bikes - NOTE: This is NOT a replacement for rear suspension, it is a suspension seat post that helps absorb the larger bumps while seated. It does not provide small bump compliance found in rear suspension mountain bikes.

We made this post to honor your most adventurous days on the trail. From the quadzilla climbs to the serpentine descents, the Loam Dropper capitalizes on PNW's best-in-class reliability in our shortest, lightest, and most customizable package yet. The new Loam also features swappable silicone bands that hug the midcap, giving you the opportunity to match your bike (or mood). UPGRADED TRAVEL PLANS By shortening the overall post and adding 25mm of Tool-Less Travel Adjust we’ve guaranteed you more drop across a wider variety of frame designs, sizes, and body types. This means more distraction-free descents with less awkward high fives from your saddle when the trail gets rowdy. UNDER PRESSURE Slow and controlled or swift and poppy? Dial-in your dropper’s return rate with personalized pressure, courtesy of the Loam Post’s adjustable air cartridge. MAKE IT YOURS The Loam Post features a machined channel on the mid-cap that's home to a swappable silicone band. Each post comes with our standard Blackout Black band but we offer our full range of colors to match your bike, PNW cockpit or personal chakra aura.

Origin-8's Pro Fit Alloy Seat Post is made of light and durable forged aluminum that's been anodized and laser etched for a custom look. It also features an adjustable 2-bolt clamp that holds fast and lets you easily dial in your seat position. And, this fine post comes in a variety of diameters to fit almost any bike.

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

- Sturdy Cr-Mo double bolt adjustment seat clamp allows for a precise and secure hold on the saddle in any position

Genuine replacement parts. Replacement seatposts for a variety of frame styles. - Durable aluminum construction - For specific compatibility concerns, please contact our Customer Service team - Rail compatibility: Universal

Dimension Two-Bolt Seatposts provide a sturdy and durable saddle perch for cross country and all-mountain riding in three diameters, rigorously tested to ISO 4210 Mountain standards. - Constructed with AL-6061-T6 aluminum - Shot-peened finish - 0mm offset

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

Bontrager Line Dropper Bushing Kit. Fits 31.6 diameter seatpost. Product details: -Original Equipment parts to service your Bontrager Line Dropper seatpost -Regular maintenance will help maintain performance and extend the lifespan

Product details: -Replacement cartridge units for Bontrager Line Dropper seatposts -Be sure to use the correct size cartridge for the post's respective amount of travel -Regular maintenance of the Drop Line will help maintain performance and extend the lifespan

- Designed using SRAM Exogram technology - Available the Zipp SL Speed DI2 Internal Battery Mount to hold a Shimano DI2 seatpost battery within the SL Speed seatpost. (Sold separately) - Matte Black finish - Seat Post Diameter: 31.6mm - Seat Post Length: 400mm

- Designed using SRAM Exogram technology - Available the Zipp SL Speed DI2 Internal Battery Mount to hold a Shimano DI2 seatpost battery within the SL Speed seatpost. (Sold separately) - Matte Black finish

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 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. The mechanism is air-sprung and hydraulically locked. The remote can be run on the left or right, above or below the handlebar, but is optimized as a left shifter replacement for 1x drivetrains. - Cable activated, hydraulic action, infinitely adjustable travel - Double key-way design prevents lateral twisting - Double bolt clamp with a wide range of seat angle adjustment. Fits both standard and 7 x 9 mm Carbon Rails - Sealed cartridge internals for quick replacement - Low profile head-seal and saddle clamp increase useable travel

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. The mechanism is air-sprung and hydraulically locked. The remote can be run on the left or right, above or below the handlebar, but is optimized as a left shifter replacement for 1x drivetrains. - Cable activated, hydraulic action, infinitely adjustable travel - Double key-way design prevents lateral twisting - Double bolt clamp with a wide range of seat angle adjustment. Fits both standard and 7 x 9 mm Carbon Rails - Sealed cartridge internals for quick replacement - Low profile head-seal and saddle clamp increase useable travel

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 Whisky No.7 Seatposts are made from the highest quality materials to be durable, lightweight, and comfortable. Whether you’re remounting during the cross race, or abusing them on the trail, you can trust Whisky’s seatposts. Available in different diameters and offsets. - Convenient finger adjustment of saddle angle - Unidirectional carbon shaft, forged aluminum head - No rider weight limit - 5 year Whisky warranty - ASTM Condition 3 - For rough off-road riding and jumps less than 24"

Seatposts can be an overlooked part of the bike, but at Whisky Parts Co., everything gets the same attention to detail so your ride never suffers. Their seatposts are made from the highest quality carbon, ensuring they are durable, lightweight, and comfortable. Whether you’re remounting during a cross race or abusing them on the trail, you'll be glad you have the No.7. - Carbon shaft absorbs trail chatter - UD carbon shaft, forged aluminum head

WeThePeople's Socket Pivotal seat post is made from 6061 aluminum for a perfect blend of strength and weight savings. It works with all Pivotal seats and comes in the perfect color and size to match your bike. Plus, there's a 17mm socket head built into the bottom of the post for park-side adjustments to your wheels.

#901 7/8 top 10" x 1" - Seat Post Diameter: 13/16'' - Seat Post Length: 15.5'' - Offset: 0mm - Clamp Type: Post mount - Seat Post Material: Steel

The Velo Orange Grand Cru seatpost is made from one piece of aluminum, internally ovalized to trim weight. The Grand Cru seatpost’s head is integral with the post – not pressed on – for great strength and weight savings. 0mm Setback: Zero-setback/offset posts are commonly used on mountain bikes and by some bikepackers. The Grand Cru zero setback post uses a one-bolt, ergonomic side-adjustment mechanism for both saddle rail clamping and fore-aft adjustment. 30.2mm Setback: For riders who prefer the comfort of leather saddles but have found proper saddle placement difficult due the short rails on leather saddles Velo Orange offers the Grand Cru Long Setback with an ample 30.2mm of setback. This model uses a two-bolt design.

TruVativ's Stylo T30 Seatpost is constructed with a 1-piece 3D-forged 7050 aluminum tube to be light and strong. The sturdy dual-bolt head provides loads of adjustability so you can fine tune your saddle position.

Thomson Covert Elite Dropper Seatpost-31.6 150mm Black Internal. We've set the bar with the Thomson covert black dropper post. It's designed around internal routing for clean installation and an updated shift style remote lever for effortless operation. The Thomson Covert Dropper includes a new shifter oriented remote lever for easy operation. The cartridge-based system is designed to have the longest service life in the industry. If repair is needed, it's fast, affordable, and simple. Every part that makes up the Covert dropper is carefully chosen, and of the highest grade quality available. - Custom made Norglide bearing bushings and Trelleborg O-Rings and seals - Thomson saddle clamps and fasteners - Motul Oil for durability and precision quality. - The return speed is damped in the last 15mm of upward travel to be gentle on your seating area. - 60mm (Ø27.2 only), 100mm, 125mm, 150mm of infinite travel. - Passes ISO 4210 fatigue and strength tests for seat posts.

Thomson's Elite Setback Seatpost is perhaps one of the most recognizable bicycle components in the world and it has earned its reputation as a super-strong, light and reliable beauty. With roots in the aerospace industry, Thomson builds the post with a tough and light 7000-series aluminum body, an elliptical extrusion that adds strength and stiffness, and a head and seat clamp forged and machined from a block of aluminum to eliminate any possible weak areas. Plus, its simple-to-use 2-bolt seat clamp allows speedy, infinite and secure seat angle adjustment from minus 5 degrees to plus 29 degrees. Upgrade your favorite ride to a Thomson seatpost and start riding in style.