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Bike Seat Water Bottle Holder with Two Bottle Cages - Behind Saddle Bottle Holder - Includes Two Tight Grip Bottle Cages. Rack is Made from Light Weight Aluminum - Stealth Black Finish

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$46.99

$ 24 .99 $24.99

In Stock

About this item

  • 🚲 WHAT IS INCLUDED? One Alloy bottle cage rack, hardware to attach the behind seat bottle cage holder and TWO bottle cages with bottle cage bolts. NOTE! Pictures showing additional accessories are for demonstration purposes only! PLEASE NOTE: This product DOES NOT come with Water bottles, C02 cartridges, LED light, seat post or bicycle saddle. NOTE: Bottle cages will be black in color but may vary in make or model due to product availability and product evolution.
  • 🚲 EASY INSTALLATION: Quick & Easy to install to the saddle rails of your bike. Installs behind the seat post clamp on the horizontal saddle rails. The behind seat bottle cage mount works with all round standard saddle rails (NOT I beam, non-round or carbon). Detailed instructions are included for easy installation, leaving more time for riding!
  • 🚲 WHO IS THIS FOR? Experience riders familiar with bicycle gear. NOT for cheap bikes intended for recreation. The behind saddle dual bottle holder is perfect for long triathlon training rides and long road rides where extra water is a necessity! The behind saddle rack is for use on road racing bikes & triathlon bikes. Off the back hydration racks are not ideal for mountain bikes where rough trail conditions are encountered. An ideal stocking stuffer or gift for that triathlete in the family.
  • 🚲 PREMIUM PERFORMANCE: A must have for long triathlon training rides.The most important tri accessory that you need for your bike. Enhance your riding ability with longer training rides. Olympic, full or Β½ Ironman – you need this behind seat bottle holder. With this rear mounted adaptor for bottles and cages, you will gain vital aerodynamic benefits during long distance triathlons. This double water bottle cage mount offers quick and easy access to water bottles. Extreme aerodynamic benefits.
  • 🚲 SUPERIOR DESIGN: Lightweight, strong alloy paired with adjustable installation angle and extreme aerodynamics makes it the must have triathlon bike component. Additional threaded holes allows for the addition of LED lights, which can be added later, and CO2 cartridges. Add an extra tube using a zip tie.



Product Description

Valdora's Behind Saddle Bottle Cage Rack is A Must Have For Triathletes and Long Distance Road Riders

under seat triathlon water bottle cage holder for triathlon

Triathlon bike seat water bottle holder Also know as: Saddle water bottle holder | Bike seat bottle holder | Behind saddle water bottle holder |

The triathlon bike hydration system that works. Multiple configurations for carrying water bottles, CO2 cartridges, and LED lights. Perfect for triathlon training and long training rides. A behind seat hydration system for racing bicycles. Attach 1, 2, or 3 bottle cages! Configure it to fit your needs! There are many possible configurations. Valdora's dual behind seat bottle rack attaches to the saddle rails and keeps your bottles out of the wind and in the slipstream. A must for long training rides. An extra bottle to replenish your between the aerobar bottle during races. Maybe a shot of the high carb nutrition that you will need. Or a modified bottle to carry an extra tube, tools, patch kit....whatever you can think of, carry it here. A competitor should not train or race without a Valdora hydro rack. Lightweight cnc'd alloy, tough, easy to adjust. Everything you need to train and race with confidence! Installation instructions included with rack and in pictures here. Not for use with carbon or 7 mm x 9 mm saddle rails or I beam.

bike seat water bottle holder behind saddle water bottle holder rear bottle cage mount triathlon

Saddle Water Bottle Holder | Triathlon Gear

Triathlon Bike Behind Saddle Water Bottle Cage Mount. Multiple configurations for carrying water bottles, CO2 cartridges, CO2 inflator, and LED lights. Perfect for triathlon training and long rides. The bike seat water bottle holder. Bike water bottle holder behind seat.

Rear Bottle Cage Mount Triathlon Style! Road bike water bottle cage back of seat mount. Details of saddle water bottle holder listed here -

behind saddle dual water bottle holder

Bike Seat Water Bottle Holders & Rear Hydration Systems

Bike seat water bottle holders, also known as rear hydration systems, provide cyclists with a convenient way to carry additional water bottles behind the saddle. These systems are particularly popular among triathletes, long-distance cyclists, and time trial riders who require easy access to hydration while maintaining an aerodynamic position.

Types of Rear Bottle Cage Mounts

  1. Behind-Saddle Water Bottle Holders – These mounts attach to the saddle rails or seat post, keeping bottles within reach without affecting aerodynamics. Options include single, dual, or even triple cage mounts.
  2. Seat Post Water Bottle Holders – These attach directly to the seat post, offering a stable and secure bottle mount. They are ideal for road bikes, triathlon bikes, and time trial bikes.
  3. Saddle-Mounted Bottle Cages – These holders attach to the underside of the saddle, keeping bottles tucked behind the rider. Variants include single and double bottle cages with additional space for accessories such as CO2 holders.
  4. Triathlon Hydration Systems – Many tri bikes feature specialized hydration systems designed to integrate seamlessly with aero seat water bottle holders and other accessories.

Key Features and Benefits

  • Increased Hydration Capacity – Rear-mounted bottle cages allow cyclists to carry more water bottles, reducing the need for frequent refills. Aerodynamic Advantage – Positioning bottles behind the seat minimizes wind resistance, crucial for triathletes and time trial riders. Secure Attachment – High-quality saddle bottle cage mounts ensure bottles stay in place over rough terrain. Versatile Mounting Options – Riders can choose between saddle rail mounts, seat post-mounted bottle cages, and under-saddle hydration setups. Accessory Integration – Some mounts include additional storage options for CO2 cartridges, spare tubes, or tool bags.

Popular Mounting Configurations

  • Behind-Saddle Dual Bottle Cages – Allows riders to carry two bottles securely, often used in triathlon and long-distance cycling. Under-Saddle Water Bottle Holders – Mounts beneath the saddle for a low-profile hydration solution. Seat Post Bottle Cages – An alternative for bikes without sufficient saddle rail space. Rear Hydration Systems with Storage – Some systems combine bottle holders with compartments for tools or nutrition.

Choosing the Right Rear Bottle Cage Mount

  • For Triathlon & Time Trials: Dual rear bottle cage mounts are ideal for long races, paired with aero water bottles.
  • For Road Cycling: Saddle-mounted bottle holders provide hydration without affecting frame space.
  • For Touring & Endurance Rides: Multiple bottle cages help carry extra fluids for long distances.

Bike Seat Water Bottle Holder with 2 Bottle Cages and 2 Bottles - The Rear Hydration System for Triathlon Bikes - A simple bike water bottle holder

Behind Seat Dual Water Bottle Cage Holder With Bottle Cages and Insulated Water Bottles

Valdora Behind Saddle Bottle Cage Holder for Triathlon and Road Bikes - Many configurations possible!

Pictured above (for reference) with:

  • Behind Saddle Bottle Cage Rack
  • CO2 Cartridges
  • Bottle Cages
  • Insulated Water Bottle

About The Tri Bike Bottle Cage Holder

  • The behind saddle bottle mount rack consists of a light weight machined aluminum bottle cage rack. It will allow you to attach 1, 2 or 3 bottle cages, CO2 cartridges, an LED light or a bolt on aero bag. Configure to your liking!
  • Often referred to as dual water bottle holders or seat bottle holders, these are so much more.
  • Works with all standard saddle rails! Behind Seat bottle cage mount works with all round standard saddle rails (not I beam). A necessary triathlon accessory. Refer to image with measurements for specifics.

Bike Seat Water Bottle Holder Saddle Rail Picture to demonstrate the type of saddle that this saddle bottle holder rack will work with.

saddle rail specs for triathlon bottle cage holder

Compare to your saddle prior to ordering. If your saddle has SPRINGS, this rack will not work.

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DrExploreMore
Reviewed in the United States on June 2, 2025
The make of this seems like it would be good, but they didn’t give the need brackets to mount to my bike and also no cage screws. Waste of money, go with another brand.
Troy R.
Reviewed in the United States on August 21, 2024
Difficult to install. Bottle holders are plastic pieces of junk and look nothing like the advertised product.
Morgan House
Reviewed in the United States on August 1, 2024
Works well. Probably not the lightest but it gets the job done
Cheryl W
Reviewed in the United States on July 6, 2023
This product worked just as I suspected. I haven’t had any trouble with water bottles falling out when I hit bumps. Would recommend.
Andrew Healey
Reviewed in the United States on July 12, 2023
It was easy to mount to my road bike and having the two positions is nice for angling the bottles away or straight up. It holds strong and feels very sturdy. I'm not sure the mounts on the side could ever be used as there's just not enough length. I can only use the mounts on the 45's which doesn't leave enough room to mount my light in the middle. I'll probably only use this on race day when I don't need my radar and light so it's not a big deal.And watch for bumps. I've launched my water bottles on every ride at least one.
Sal
Reviewed in the United States on May 31, 2023
Works great.