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30.9 mm Seatposts
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FIFTY-FIFTY Mountain Bike Seat Post, 27.2/30.9/31.6mm Aluminum Alloy Bicycle Seat Post, 350mm Length for MTB, Road Bike, E-MTB (31.6mm) Black
Features Strong and Durable: The bike seat post is made of 6061 aluminum alloy and CNC full machined. One Piece Forge and Lightweight: The bike...
£52.78
Shipping: Free
OnBuy

NONDK Wireless Electric Seatpost for Bikes IP67 Waterproof Rechargeable Automatic Lifting Travel 150mm Seatpost Dropper 30.9 g1z9h2C-zgvX4ylG0t-WA
Advanced Wireless Technology: Equipped with cutting-edge wireless operation, this seatpost allows for effortless height adjustments with the touch of a button. The rechargeable feature ensures that you are to go, making it perfect for long rides. High-Performance Material: Crafted from premium alloy, this seatpost offers exceptional durability and strength, ensuring it withstands the rigors of intense cycling. Its robust construction makes it an ideal choice for both amateur and professional riders. Waterproof and : With an IP67 waterproof rating, this seatpost is built to withstand all weather conditions, ensuring reliable performance whether you're riding through rain or crossing streams. It's designed to keep functioning smoothly, no matter the environment. Lifting Feature: The automatic lifting mechanism provides convenience and efficiency by adjusting to your desired height without manual intervention. This feature enhances comfort and performance during your rides, making it easier to tackle varying terrains.
£135.99
Shipping: Free
Amazon Marketplace - focn

BBB Cycling CollarClamp Bike Seatpost Clamb Single Bolt Screw-on Seat Post Clamb for Carbon and Aluminium Seatposts Roadbike, MTB and E-Bike | 34.9 mm (30.9, 31.6) Black - BSP-88 B0CY2XJ4R2
FOR EVERY RIDE: The CollarClamp Seatpost Clamp is the essential screw-on seatpost clamp designed for the ultimate protection of your seatpost IDEAL DESIGN: This seatpost clamb has a rubber cover that is your shield against water and dust, ensuring your seatpost stays clean and functional MULTIPLE SIZES: The CollarClamp is available in the most common sizes: 31.8 (27.2) and 34.9 (30.9, 31.6). It is important that the inside diameter is measured very precisely with a caliper to make sure you have the right seat post size DURABLE AND STRONG: This screw-on bike seat clamp is made from durable 6061 T6 aluminium but only weighs 25 grams. It's versatile, fitting both carbon and aluminium seat posts PART OF YOUR RIDE: BBB Cycling offers a wide variety of bike repair tools. Tools for on the road for cyclists who suffer from bike damage along the way, and workshop tools for all maintenance before and after your ride
£10.21
Shipping: £4.49
Amazon

AYBDSJNWSF Bicycle Damping Suspension Seatpost 27.2-33.9mm 350mm Silver Black Adapter(30 8 black) WZVYYASWJ-308BLACK
Suspension seatpost adopts damping structure for riding vibration buffering 2. Available in multiple diameters from 27.2mm to 33.9mm for matching 3. Features 350mm overall length to fit standard bicycle frame sizes 4. Comes with adapter accessory for diversified installation scenarios 5. Offered in silver and black tones for diverse bike collocation
£132.07
Shipping: Free
Amazon Marketplace - Shenzhen Huanyou Trading Co., Ltd.

AYBDSJNWSF Bicycle Damping Suspension Seatpost 27.2-33.9mm 350mm Silver Black Adapter(30 4 black) WZVYYASWJ-304BLACK
Suspension seatpost adopts damping structure for riding vibration buffering 2. Available in multiple diameters from 27.2mm to 33.9mm for matching 3. Features 350mm overall length to fit standard bicycle frame sizes 4. Comes with adapter accessory for diversified installation scenarios 5. Offered in silver and black tones for diverse bike collocation
£132.07
Shipping: Free
Amazon Marketplace - Shenzhen Huanyou Trading Co., Ltd.

EXA Form Hydraulic Dropper Seat Post Cordless 100mm Stroke for MTB E-Bike Road Bike 30.9x383mm B0B9KCY1RV
3 diameters are available: 27.2mm, 30.9mm and 31.6mm. are all available for sale. It is very important to choose the correct diameter of the seat post according to the inner diameter of your bicycle frame. - Easy installation: no cables or housings, just carefully insert the purchased seat tube into the frame and then fix it. Important: The slot must be made up to the minimum insertion depth. Easy to use: simply pull the lever and sit down to adjust the seat height. Fully adjustable: the seat height can be adjusted throughout the ride. STRONG AND LIGHTWEIGHT: Hydraulic dropper seat post integrated into a 7075 aluminum tube.
£84.23
Shipping: £9.40
Amazon Marketplace - Amazon US

Carbon Fiber Bike Seatpost 27.2/30.9/31.6mm, UD Matte for MTB/Road(27.2x350mm) MOBFOCOBM-27.2X350MM
Premium UD carbon fiber construction offers optimal strength-to-weight ratio Multiple diameter options (27.2/30.9/31.6mm) fit most bike frames Matte finish resists scratches and maintains sleek appearance Vibration-damping properties enhance riding comfort Precision engineering ensures perfect seat alignment
£53.30
Shipping: Free
Amazon Marketplace - yiyuannankeji

Carbon Fiber Bicycle Seatpost for MTB/Road Bikes, 27.2/30.9/31.6mm Sizes(31.6X350MM) MOBFDLFBF-31.6X350MM
Lightweight carbon fiber construction reduces overall bike weight while maintaining strength and durability. Multiple diameter options (27.2/30.9/31.6mm) ensure compatibility with most MTB and road bike frames. Vibration-damping properties provide a smoother, more comfortable ride on rough terrain. Sleek design enhances bike aesthetics while improving aerodynamic performance. Easy installation with standard seat clamp systems for quick adjustment and setup.
£70.16
Shipping: Free
Amazon Marketplace - yiyuannankeji

EXA Form Hydraulic Dropper Seat Post Cordless 150mm Stroke for MTB E-Bike Road Bike 30.9x503mm B0B9KC6S7R
3 diameters are available: 27.2mm, 30.9mm and 31.6mm. are all available for sale. It is very important to choose the correct diameter of the seat post according to the inner diameter of your bicycle frame. - Easy installation: no cables or housings, just carefully insert the purchased seat tube into the frame and then fix it. Important: The slot must be made up to the minimum insertion depth. Easy to use: simply pull the lever and sit down to adjust the seat height. Fully adjustable: the seat height can be adjusted throughout the ride. STRONG AND LIGHTWEIGHT: Hydraulic dropper seat post integrated into a 7075 aluminum tube.
£98.08
Shipping: £9.97
Amazon Marketplace - Amazon US

Wejoy SR SUNTOUR NCX Bicycle Shock Absorber Seatpost 27.2 28.6 30.0 30.4 30.8 31.6 33.9mm 350mm Mountain Bike Seat Tube Accessories
SUNTOUR SEATPOST Suitable for mountain mountain leisure car gun type design, new ideas, new suspension elegant Brand: three billiton SR suntour...
£158.31
Shipping: Free
OnBuy

Djc Components DJC Bike Suspension Seatpost Shock Absorber Damper Post 27.2 30.9 31.6 mm Lightweight Aluminum Body(Black Head 31.6mm) sp-suspension
DJC Bike Suspension Seatpost Shock Absorber Damper Post 27.2 30.9 31.6 mm Lightweight Aluminum Body(Black Head 31.6mm),Color:-black head,Size:-31.6mm.
£51.08
Shipping: Free
OnBuy

Juyutdey Bike 150mm Wireless Dropper Seatpost IP67 Waterproof Rechargeable Automatic Lifting Electric Seatpost 30.9 41We4T2nt-53ka8k6826nCu7Z3S3Q
Advanced Wireless Technology: Equipped with cutting-edge wireless operation, this seatpost allows for effortless height adjustments with the touch of a button. The rechargeable feature ensures that you are to go, making it perfect for long rides. High-Performance Material: Crafted from premium alloy, this seatpost offers exceptional durability and strength, ensuring it withstands the rigors of intense cycling. Its robust construction makes it an ideal choice for both amateur and professional riders. Waterproof and : With an IP67 waterproof rating, this seatpost is built to withstand all weather conditions, ensuring reliable performance whether you're riding through rain or crossing streams. It's designed to keep functioning smoothly, no matter the environment. Smart Lifting Feature: The automatic lifting mechanism provides convenience and efficiency by adjusting to your desired height without manual intervention. This smart feature enhances comfort and performance during your rides, making it easier to tackle varying terrains.
£138.38
Shipping: Free
Amazon Marketplace - Tang89Lei

Aundhegrtt Wireless Bike Dropper Seatpost IP67 Waterproof Rechargeable Automatic Lifting Travel 150mm Electric Seatpost 30.9 91-8XIWmdQR8G7LSg73qE7Ce3uU-qG3O5w2
Waterproof and : With an IP67 waterproof rating, this seatpost is built to withstand all weather conditions, ensuring reliable performance whether you're riding through rain or crossing streams. It's designed to keep functioning smoothly, no matter the environment. Advanced Wireless Technology: Equipped with cutting-edge wireless operation, this seatpost allows for effortless height adjustments with the touch of a button. The rechargeable feature ensures that you are to go, making it perfect for long rides. High-Performance Material: Crafted from premium alloy, this seatpost offers exceptional durability and strength, ensuring it withstands the rigors of intense cycling. Its robust construction makes it an ideal choice for both amateur and professional riders. Lifting Feature: The automatic lifting mechanism provides convenience and efficiency by adjusting to your desired height without manual intervention. This feature enhances comfort and performance during your rides, making it easier to tackle varying terrains.
£135.99
Shipping: Free
Amazon Marketplace - Longbagu

Onchdbfhuu Bike Wireless Dropper Electric Seatpost 150mm Automatic Lifting Travel IP67 Waterproof Rechargeable 30.9 T11P00175I6J59Fo47Uy221C8J9
Waterproof and : With an IP67 waterproof rating, this seatpost is built to withstand all weather conditions, ensuring reliable performance whether you're riding through rain or crossing streams. It's designed to keep functioning smoothly, no matter the environment. Advanced Wireless Technology: Equipped with cutting-edge wireless operation, this seatpost allows for effortless height adjustments with the touch of a button. The rechargeable feature ensures that you are to go, making it perfect for long rides. High-Performance Material: Crafted from premium alloy, this seatpost offers exceptional durability and strength, ensuring it withstands the rigors of intense cycling. Its robust construction makes it an ideal choice for both amateur and professional riders. Lifting Feature: The automatic lifting mechanism provides convenience and efficiency by adjusting to your desired height without manual intervention. This feature enhances comfort and performance during your rides, making it easier to tackle varying terrains.
£135.99
Shipping: £0.50
Amazon Marketplace - Patrick MacDonald

Aundhegrtt Automatic Lifting Bike Seatpost Wireless Dropper IP67 Waterproof Rechargeable Travel 125mm Electric 34.9 30L977e18-7H3LO-0pN75fCGczB78fkA
Advanced Wireless Technology: Equipped with cutting-edge wireless operation, this seatpost allows for effortless height adjustments with the touch of a button. The rechargeable feature ensures that you are to go, making it perfect for long rides. Waterproof and : With an IP67 waterproof rating, this seatpost is built to withstand all weather conditions, ensuring reliable performance whether you're riding through rain or crossing streams. It's designed to keep functioning smoothly, no matter the environment. High-Performance Material: Crafted from premium alloy, this seatpost offers exceptional durability and strength, ensuring it withstands the rigors of intense cycling. Its robust construction makes it an ideal choice for both amateur and professional riders. Lifting Feature: The automatic lifting mechanism provides convenience and efficiency by adjusting to your desired height without manual intervention. This feature enhances comfort and performance during your rides, making it easier to tackle varying terrains.
£135.99
Shipping: Free
Amazon Marketplace - Longbagu

CooMeng EXA Form 900i 30.9mm/31.6mm Remote Control Dropper Post with 1x Lever kit and Cable in Housing 100mm/120mm Travel Dropper Seatpost-31.6mm X 395mm EXA Form 900i 31.6mmX395mm
EXA Form 900i 30.9mm/31.6mm Remote Control Dropper post with 1x lever kit and Cable in Housing 100mm/120mm Travel Dropper Seatpost-31.6mm X...
£161.11
Shipping: Free
OnBuy

CooMeng EXA Form 900i 30.9mm/31.6mm Remote Control Dropper Post with 1x Lever kit and Cable in Housing 100mm/120mm Travel Dropper Seatpost-31.6mm X 345mm EXA Form 900i 31.6mm*345mm
EXA Form 900i 30.9mm/31.6mm Remote Control Dropper Post with 1x Lever kit and Cable in Housing 100mm/120mm Travel Dropper Seatpost-31.6mm X 345mm.
£154.77
Shipping: Free
OnBuy

JFOYH 30.9mm/31.6mm Hydraulic Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length)-900i 31.6mm*445mm*150mm B09YH576CH
📢Choosing The Correct Diameter is Crucial: It is essential to select the right diameter (30.9mm or 31.6mm) based on the inner diameter of your bicycle frame's seat tube. Choosing the wrong diameter can result in an inability to install. REMEMBER, selecting the correct diameter is crucial to ensure a proper fit. 📢Internal Cable Routing and Easy Installation: This dropper post is designed for frames with internal cable routing, providing a clean and organized appearance. The installation process is simple, and you can refer to instructional videos for guidance. 📢Convenient Remote-controlled Height Adjustment: With the included remote lever, you can easily adjust the seat height while riding, eliminating the need to stop and manually adjust the seat position. 📢Durable and Lightweight Construction: The seat post is made of 7075 alloy tube, which offers durability while remaining lightweight. The weight varies depending on the length, with the shortest version weighing approximately 480g and the longest version weighing around 670g. 📢Different length and stroke options available: The seat post comes in three length options (345mm, 395mm, and 445mm) and corresponding stroke options (100mm, 120mm, and 150mm, respectively). Choose the combination that suits your preferences and riding style.
£127.82
Shipping: £9.97
Amazon Marketplace - Amazon US
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