27.2 Dropper Post
Dropper posts have been widely praised as the most important technological advancement to hit the mountain bike world since suspension technology. Trust us, the 27.2mm dropper is one of the best upgrades you can make to any bike that doesn’t have a dropper.
The lift bar allows the rider to sit in a comfortable position for easy and efficient pedaling up hills. As a result, the cockpit can be raised and lowered for greater comfort and smoothness at the push of a button.
Almost all mid- to high-end mountain bikes come with a lifted seat post, while cheaper bikes may come with a fixed rigid seat post.
Bicycle with 27.2mm dropper
| Series | Price | Dropper Brand |
| 2023 Trek Checkpoint ALR 5 Driftless Series | From $2899 | Easton EA70 AX |
| Giant Trance X Series | From $2800 | Giant Contact Switch |
| Trek Marlin 7 Series | From $2899 | Bontrager alloy |
In terms of size, there is the slimmer 27.2 mm dropper or the medium-sized 30.9 mm dropper, or the more robust 31.6 mm dropper.
In this article, we will mainly review the 27.2mm dropper.
Contains：
- ROCKSHOX REVERB AXS XPLR Seatpost
- TranzX North Horse
- Bibike Remote Inside
- Crank Brothers Highline
- KS LEV Integral
- Easton EA70 AX
- TRANZX KITSUMA 27.2 External Seatpost
- PNW Coastal Pause Extension
Learn more: How To Pick Dropper For Mountain Bike?
ROCKSHOX REVERB AXS XPLR SEATPOST
– Rating Chart
– Specification
| AXS remote control or shifter control | |
| Weight | 562g |
| Itinerary | 50/75mm |
| Diameter | 27.2mm |
| Suggested Retail Price | 633 USD (price source: sram.com) |
–ROCKSHOX REVERB AXS XPLR SEATPOST 27.2 Dropper Post Reviews
The Reverb AXS XPLR has an adjustable stroke of 50 or 75 mm and is controlled by the AXS remote control or gearshift.
The use of AXS technology allows you to personalize the dropper control and fine-tune your settings through the AXS mobile app.
Unlike the standard Reverb AXS, the Reverb AXS XPLR is built on the ActiveRide platform, which is a clever setup. Once the AXS remote is activated, it has built-in compliance.
This means you get all the benefits of a dropper in the technical section. Also, you get all the benefits of a suspension seat post when you find yourself riding over rough terrain.
If you already own a bike with 1x AXS and want to explore the wild side and get loud, the Reverb AXS XPLR is the perfect upgrade for your bike.
Learn more: RockShox REVERB AXS XPLR SEATPOST
TranzX Kitsuma
– Rating Chart
– Specification
| Infinitely adjustable gas spring hydraulic locking cylinder with 20% less compression force | |
| Weight | 535g (130mm) |
| Itinerary | 90/110/125/150/170mm |
| Diameter | 27.2/30.9/31.6 mm |
| Suggested Retail Price | 159 USD (price source: tranzx.com) |
–TranzX Kitsuma 27.2 Dropper Post Reviews
KKitsuma is our most popular dropper and a reliable choice for all-day trail rides.
Available with internal or external cable routing and three diameters, designed to fit most modern trail bikes, as well as most less modern bikes. We’ve put all our knowledge of dropper design to work on Kitsuma designs to make them as hassle-free and low-maintenance as possible. So you can spend your riding time riding.
Kitsuma Internal features sealed hydraulic cartridges and coil springs with 7075 aluminum construction and hard anodized struts. All are designed to last in the toughest conditions without excessive side-to-side oscillation as mileage increases.
Learn more: TranzX Kitsuma
Bibike Remote Internal
– Rating Chart
– Specification
| Infinitely adjustable gas spring hydraulic locking cylinder with 20% less compression force | |
| Weight | 693g (27.2mm) |
| Itinerary | 125mm |
| Diameter | 27.2/30.9/31.6 mm |
| Suggested Retail Price | 182 USD (price source Amazon) |
–Bibike Remote Internal 27.2 Dropper Post Reviews
The Bibike Remote Internal seat post is made of alloy 7075, which is both strong and lightweight. 1.5 meters of cable length is enough to mount the joystick on the handlebars. The cable housing has a diameter of approximately 4.5mm.
The height of the seat post can be adjusted by pressing the lever during the ride, without stopping. There is a hex nut near the lever and the speed of raising and lowering this dropper can be adjusted by adjusting the tightness of the nut. External cable lift seat post. Suitable for bicycle frames with external cables.
Learn more: Bibike Remote Internal
Crank Brothers Highline
– Rating Chart
– Specification
| T6 series aluminum improves the durability and support of the bike on mixed terrain | |
| Weight | 535g (130mm) |
| Itinerary | 125/150/170/200mm |
| Diameter | 27.2/30.9/31.6 mm |
| Suggested Retail Price | 150 USD (price source: crankbrothers.com) |
–Crank Brothers Highline 27.2 Dropper Post Reviews
Crank Brothers is expanding its Highline line. It adds the Highline XC/Gravel Dropper seat post for better control of steep terrain and fast descents. The Highline XC/Gravel comes with hydraulic IFP cartridges for smooth drive and durability. And the two-bolt aluminum head fits most standard bikes up to 27.2 mm in diameter. Jagwire’s premium cables and housings are included to ensure your dropper is ready to hit the road after an easy installation.
T6 A refined dropper seat post for XC or gravel bikes, the T6 series aluminum improves the bike’s durability and support on mixed terrain. The shorter insertion length fits a wider range of bikes, and the independent IFP hydraulic cartridge provides a smooth drive.
Learn more: Crank Brothers Highline
KS LEV INTEGRA
– Rating Chart
– Specification
| Air spring–type hydraulically locked and sealed cartridges | |
| Weight | 515g (27.2mm, 120mm) |
| Itinerary | 65/100/120/125/150/175/200mm |
| Diameter | 27.2/30.9/31.6/34.9mm |
| Suggested Retail Price | 269 USD (price source: kssuspension.com) |
–KS LEV INTEGRA 27.2 Dropper Post Reviews
The KS LEV Integra Dropper Seat post allows you to focus on the track without worrying about finding a parking spot and adjusting seat height. Using the gas-spring type hydraulic locking seal cartridge, simply press the lever lightly. Then the post will drop to gravity depth or rise to the occasion on a fast monorail.
LELEV Integra offers a clean, streamlined profile and concealed internal cable routing. This keeps all these vital components sealed from dust and debris. The forged, two-bolt micro-adjustment head ensures that your saddle stays firmly in place. You can choose up to 175 mm of travel to find a seat post that will meet all your off-road needs.
Learn more: KS LEV INTEGRA
EASTON EA70 AX
– Rating Chart
– Specification
| EA70 AX lift rod can use a special rod for the lift rod | |
| Weight | 560g |
| Itinerary | 50mm |
| Diameter | 27.2mm |
| Suggested Retail Price | 161 USD (price source: eastoncycling.ca) |
-Easton EA70 AX 27.2 Dropper Reviews
The Easton EA70 AX dropper is optimized to fit most gravel frames and features 50 mm of travel. This is just right, putting you in a more confident and stable position on rough descents and turns. The EA70 AX dropper bar can be easily actuated using a dropper-specific bar, Shimano GRX bar, SRAM brake/lift bar combo, or even a standard mountain bike bar. This means you can activate the dropper remote without having to move your hands.
There is no need to worry about the reliability of the EA70 AX dropper, the high-quality cartridge design ensures that build quality and reliability will never be questioned.
Learn more: EASTON EA70 AX
TRANZX KITSUMA 27.2 EXTERNAL SEATPOST
– Rating Chart
– Specification
| Sealed hydraulic cartridges and coil springs | |
| Weight | 580g |
| Itinerary | 90/110mm |
| Diameter | 27.2mm |
| Suggested Retail Price | 159 USD (price source: tranzx.com) |
–TranzX Kitsuma 27.2 Dropper Post Reviews
The TranzX Kitsuma 27.2 External Seat post is TransX is the most popular and reliable seat post. It is suitable for all-day trail riding throughout the season. In addition, it offers external and internal cable routing and three diameters. This makes it suitable for most modern trail bikes, as well as less modern bikes.
The TranzX Kitsuma 27.2 External Seat post is as worry-free and low-maintenance as possible, so you can spend more time on your bike without worrying about maintenance. The Kitsuma Internal features sealed hydraulic cartridges and coil springs with 7075 aluminum construction and hard-anodized posts. All are designed to last in the toughest conditions without excessive side-to-side oscillation as the miles add up.
Learn more: TRANZX KITSUMA 27.2 EXTERNAL SEATPOST
PNW COAST SUSPENSION EXT
– Rating Chart
– Specification
| Lower the center of gravity for descent | |
| Weight | 580g |
| Itinerary | 100/120mm |
| Diameter | 27.2/30.9/31.6 mm |
| Suggested Retail Price | US$189 (price source pnw. com) |
– PNW COAST SUSPENSION EXT 27.2 Dropper Reviews
PNW brings us a dropper post that fits any bike with a Coast Suspension Dropper. It’s the perfect match for your Gravel bike, touring bike, or even a commuter with 100 or 120mm of travel and a 40mm shock.
The suspension absorbed the small bumps we encountered on gravel roads and sidewalks, allowing us to stay seated to pedal the gravel more efficiently. 100 – 120 mm of travel allowed us to lower our center of gravity behind the saddle for descending and to wait more comfortably for the light to turn green while riding around town.
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