Fast Suspension has been working on a plug and play damper to replace Motion Control damper units in RockShox Yari and Revelation forks. Why only these two models? Fabien Glatre, owner and engineer at Fast says that the Yari is becoming one of the most popular forks at the moment due to the huge numbers specced on eMTB's. He thinks the Yari has a great chassis but is let down by the damping performance of the Motion Control system, especially on heavier eMTB's which have much more sprung weight and blow through the mid-stroke too easily. Most riders try to overcome this by adding more volume spacers, but a better solution is said to be to add more compression support in the mid-stroke. This new cartridge gives independent control over three phases of compression damping: low, medium, and high.
Riders can externally adjust compression for low (0-150 millimeters per second) shaft speeds and medium (150-700 millimeters per second) speeds using the purple and black adjusters. High-speed (anything over 700mm/s) can be adjusted internally by switching shims in the lower valve and can be done by the consumer.
The unit will employ nitrogen filled, closed cell foam which will work as a compensator, and turns the damper from an emulsion type system into a closed cartridge type by sealing against the stanchion wall.
The Allen key bolt next to the adjusters can be removed to remove any unwanted pressure build-up in the cartridge.
The units will cost €259 and be available in October, along with a series of instructional videos that help riders get the best setup from their on-trail feelings.
Fast also have some new upgrades for their Holy Grail shock. There is a new compression lever that either leaves the shock open, increases high-speed in the middle position for harder hitting riders or in case you take a rare trip to the Rampage and need more support for big stuff, and the third position increases total compression to improve pedaling performance.
Fast have also been developing a new, larger IFP (internal floating piston) reservoir for the Holy Grail shock. This unit pictured is in the prototype stages and will have a more refined finish, but during dyno testing the shocks temperature increases to 78ºc, a full twenty degrees less than their standard reservoir which heated to 98ºc on the same test run. This should keep riders shocks more consistent when arms and legs are struggling towards the end of long tracks.
Fast must have missed out on the memo from the bike industry, though, as both of the above parts are available as upgrades to existing shocks, so you don't need to buy a whole new product to get the latest performance.