"promax sp 1 seatpost 30.9 x 400mm silver"

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

See all Thomson

"Whisky Parts Co. makes high quality carbon components designed with unique features that help you do more with your bike and stand out from the rest. We believe that our work can help every rider find a new level of confidence and performance with our sturdy and lightweight forks, bars, rims and more. So whether you are building a new bike or upgrading one you already have, you'll find an uncommon attention to detail in every product we offer."

See all Whisky Parts Co.

"At Salsa, we believe a sense of adventure makes life better. The bicycle can be so much more than just a bike; it's a path to new places, new people, and amazing experiences."

See all Salsa

"Ritchey bicycle components have been raced to victory in some of the biggest cycling competitions in the world including the UCI World Championships, the Tour de France and the Olympics and it all began in a simple garage in Menlo Park, California with Tom Ritchey.'

See all Ritchey

Dimension makes quality components to repair or custom-fit the vast majority of bikes being ridden today, and provide the accessories that make them fun to ride.

See all Dimension

"Every year bikes change, styles and trends evolve, old bikes are in need of repairs and new bikes are waiting for that personal touch. We provide the means to keep your bike on the road and fun to ride!"

See all Sunlite

Driven by the vision of becoming a worldwide known manufacturer of bicycle components, DT Swiss expanded its product range over the years. Today DT Swiss has established itself as a leading manufacturer of spokes, nipples, hubs, rims, complete wheels as well as suspension systems.

See all DT Swiss

"The world's best choose Cane Creek. A key element of Cane Creek's mission is to support the sport of cycling, including racing, charitable activities and cycling advocacy. Cane Creek believes strongly in the power of bicycles and their potential to effect positive change in our society. To that end, Cane Creek supports athletes and teams whose purpose encompasses more than competitive racing, such as getting more people on bikes, improving or promoting a healthy lifestyle, and making our world better through the use of a bike."

See all Cane Creek

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

See all Kind Shock

Answer BMX makes BMX racing components.

See all Answer

"At Topeak, exciting new ideas for accessories are spinning at full speed and driving us ahead in a never ending cycle of innovation."

See all Topeak

"Campagnolo puts all of its professionalism and expertise into the manufacture of its components in Via della Chimica plant in Vicenza. All production takes place exclusively within Campagnolo's own plants, so that product development can be a fully integrated part of the process. Every step in the process, from design and engineering to testing and industrialisation, takes place within Campagnolo facilities. Campagnolo even develops its own tools, machinery and technology so that it can produce only the very best components and wheels for racing bicycles."

See all Campagnolo

Surly is a leading manufacturer of bicycle frames, and was one of the first Fat Bike manufacturers.

See all Surly

"An icon in the mountain bike industry."

See all RockShox

"Incremental enhancements. Perpetual improvements. Revolutionary Innovation. When advancements are continuously made to every attribute of every component, the result is overall performance that is simply second to none. And to real cycling enthusiasts, there is nothing more gratifying then achieving the ultimate ride. And the best part is we just keep making it better. This is what SRAM is all about."

See all SRAM

"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."

See all Full Speed Ahead

"The great adventure of Selle Italia began just outside of Milan in the village of Corsico in 1897. Selle Italia was originally founded to make saddles for everyday bicycles used for transportation. Back then, automobiles were an unaffordable for most and the bicycle was the transport of choice for many.

Fast forward to the late 1970's. The automobile had long replace the bicycle as a primary mode of transport and cycling was more for sport than anything. The Bigolin family took over Selle Italia and began an upward trajectory that propelled Selle Italia to the top with continuous product innovation encompassing new construction techniques and using new materials. This innovation and vision has made Selle Italia the acknowledged #1 source for high-end bicycle saddles worldwide."

See all Selle Italia

"Jagwire is the number-one cable and housing brand in the world. You'll find Jagwire cables and housings on Giant, Specialized, Felt, Trek, BMC, Cannondale, Norco, Scott, Globe, KHS, Bianchi, Ridley and hundreds more international brands. Jagwire invites you to take your bike beyond ordinary in a blaze of light, color and texture with our family of integrated control system products. From a rainbow of cable housings and brake pads to stylish shifter mounts, Jagwire helps you transform your ride into a rolling gallery of self-expression."

See all Jagwire

"Industry Nine hubs are handmade in Asheville, NC"

See all Industry Nine

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

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.

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

Seatpost Material

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

Seatpost Clamp Style

Weight

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

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

These products are one of our best sellers.

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

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.

sort by largest discount