MRP Ramp Control cartridge review£130.00

New cartridge lets you adjust the air spring volume of your forks on the go

BikeRadar score4/5

MRP has been using Ramp Control tech in its forks for a while to allow users to adjust the air spring volume, and therefore the progressivity of the stroke, on the fly. Now it’s available in a cartridge that fits inside any fixed travel, 35mm stanchion RockShox fork (Lyrik, Yari, Boxxer or Pike) and the Fox 32.

Rather than a solid piston, the system uses a variable-valve orifice to control air bleed speed into a secondary air chamber, depending on how far you twist the top-cap dial.

The cartridge takes up a similar space to one-and-a-half RockShox volume spacers, so if you’re running a single ‘Bottomless Token’ or none at all, give it a miss. If you’ve room, though, it provides subtle to very significant changes of shaft-speed-sensitive spring rate change, in the later-mid and final stroke, from the fork top.

I found it didn’t have any effect on slow/low-speed compression sensitivity, like using multiple solid tokens potentially can. This makes tuning far faster, more convenient and subtle than using a bag of volume spacers.

But at 10 times the price of enough tokens to tune most forks twice over, be sure to fully tighten the Ramp Control cartridge to avoid slow pressure leaks.

This article was originally published in Mountain Biking UK magazine, available on Apple Newsstand and Zinio.

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: 45
  • 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 than 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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