CrankBrothers Joplin 4R seatpost£235.00

4in adjustable post

BikeRadar score3/5

The Joplin is derived from the Maverick Speedball dropper post, and over years of evolution it's getting better. It still needs lots of TLC though, and a possible unofficial upgrade, to get the best from it. The hydraulically adjusted travel lets you choose the ride height and it’s a very smooth stroke when new.

The new double bushing design works a lot better for a lot longer than before, so slop and play is much less of an issue. The seals are okay but we know several riders who have fitted the seal from a Fox Float rear shock, which extends strip-down and service intervals significantly.The joystick handlebar remote is the best cable-operated piece on test by far as you can push or pull it in any direction to release the post.

We've had clearance issues between the lever and the base of some saddles though, and the cable needs to be kept clean. Smooth actuation depends on the post not being too sticky to move too. It's light and well priced and comes with a two-year warranty.

This article was originally published in What Mountain Bike magazine.

Guy Kesteven

Freelance Writer, UK
Guy started filling his brain with cycle stats and steaming up bike shop windows back in 1980. He worked the other side of those windows from '89 while getting a degree in “describing broken things covered in mud" (archaeology). Dug historical holes in the ground through the early '90s, then became a pro bike tester in '97. Guy has ridden thousands of bikes and even more components the world over since then and can remember them all in vivid, haunting detail. Can't remember where the car keys are, though.
  • Age: 44
  • Height: 180cm / 5' 11"
  • Weight: 68kg / 150lb
  • Waist: 76cm / 30in
  • Chest: 91cm / 36in
  • Discipline: Strict sadomasochist
  • Preferred Terrain: Technical off-piste singletrack and twisted back roads. Up, down, along — so long as it's faster tfhan the last time he did it he's happy.
  • Current Bikes: An ever changing herd of test machines from Tri bikes to fat bikes and everything in between.
  • Dream Bike: His Nicolai Helius AM custom tandem
  • Beer of Choice: Theakston's Old Peculier (not Peculiar)
  • Location: Yorkshire, UK

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