crankbrothers Highline XC/Gravel 125 mm Dropper Post

Item number: 77103
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.9 / 5.00

crankbrothers Highline XC/Gravel 125 mm dropper post - highly reliable

The crankbrothers Highline XC/Gravel dropper post with 125 mm of travel and 27.2 mm diameter is a dropper with infinite adjustment. It also scores points for its smooth function, quick return to the starting position and easy assembly. Its' base is a self-contained hydraulic IFP cartridge with two chambers and internal floating piston. The Jagwire cable, Igus bearings and Trelleborg seals stand for top quality. Also, with its remarkably low stack and clean internal cable routing, the Highline XC/Gravel will help Cross Country racers and gravel adventurers have more fun on the bike.


Application: Cross Country, Gravel
Travel: 125 mm
Diameter: 27.2 mm
Length: 452 mm
Setback: 0 mm

Technical Information:

Actuation: mechanical handlebar remote
Cable Routing: internal
Clamp: 2-bolt
Compatible Saddle Rails: 7 x 7 mm (standard)
Material: aluminium (7075-T6)

Approved For:

Insertion Depth (max.): 264 mm
Insertion Depth (min.): 100 mm


- lower insertion depth suitable for many frames
- premium seals by Trelleborg
- exclusive plain bearings by Igus
- Jagwire cable and cable housing
- encapsulated hydraulic cartridge (2 chambers: gas and oil separately) with internal floating piston
- internal cable routing
- cable actuated for easy installation
- linear actuator for quick return
- aluminium quill
- standard 2-bolt clamp
- 47 mm minimum construction height
- 290 mm maximum extension length
- 172 mm minimum extension length
- remote with especially flexible mount system available separately

Maintenance Intervals:
The maintenance intervals are dependent on riding style and the geography.
After every ride: Wipe dust and dirt from the seatpost, focusing on the seal area and the tip of the spring. Check the seatpost for any damage.
Every 150-175 hours of driving time: Lubricate the internal components by unscrewing the collar, use spring-specific grease (never oil!) up to the sleeve under the collar and reassemble. Check screw connections for the specified torques.
450+ hours riding time: Check seatpost and replace internal components if necessary.


27.2 mm / 452 mm / SB 0 mm:
Diameter: 27.2 mm
Length: 452 mm
Setback: 0 mm
Manufacturer Number: 16470


- 1 x crankbrothers Highline XC/Gravel 125 mm dropper post
- 1 x Jagwire cable
- 1 x Jagwire cable housing

Order Together:

The remote kit is required for use.


  • black/27.2 mm / 452 mm / SB 0 mm: 467 g zzgl. Zug und Außenhülle


  • black/27.2 mm / 452 mm / SB 0 mm, in stock

Customer Reviews (1)


Customer Reviews (1)


Give us your opinion on this product.

by alberto t.  on 08.04.2021
verified purchase
0 of 1 customers found this review helpful.

The seat post itself feels sturdy and extends/retracts promptly.
The trigger (not included) feels just fine. The overall installation was complex (because the bike has not cleaned up and the inner routing needed a little bit of patience) but well described by the instructions and videos.

Is this review helpful?

Give us your opinion on this product.