If you own a recent competition-level KTM, GasGas, or Husqvarna MXer, your bike most likely came stock with a WP XACT or AER 48 air fork—a lightweight fork that was designed for the heavy landings and big hits that come with riding motocross and supercross. Where is it not so fantastic? Out on the trails or choppy track conditions, where you’ll want something closer to a coil-like feel with a more supple response to sharp impacts. Kreft Moto’s Plush Tank Adjustable Air Spring Reservoir lets you have the best of both worlds.
Let’s get a little more technical. The stock XACT/AER48 air fork has a hyper-progressive spring curve, which basically means that as the fork compresses, the spring rate increases exponentially. For big jumps and heavy shocks to the machine, it’s exactly what you want. However, if you’re out on the trail or riding extremely choppy track conditions, that translates to harsh response to roots, rocks, and braking bumps, etc.—a ride that never feels quite right. Unlike an air spring, a traditional coil spring has a linear spring rate—as the fork compresses, the spring rate stays consistent, giving you that predictable response to sharp impacts from roots, rocks, and all the rough stuff Mother Nature can throw at you.
Here’s where the Kreft Moto Plush Tank comes in. With a simple switch you can toggle from “Firm” to “Plush.” The Plush setting increases the volume of the main air spring chamber, giving your XACT/AER 48 a truly linear spring curve with a coil-like feel—instantly. You’ll feel improved compliance and improved maneuverability on tight, technical trails right away. Hit a favorite loop or trail and take back-to-back laps on each setting and you will 100 percent feel the difference. Rocky sections that punished your arms on the stock setting genuinely just seem to melt away, and your sense of control skyrockets.
A flip of the switch back to the Firm setting brings you right back to your stock spring curve, ready to attack big jumps and absorb huge hits once again. There’s no need for pricey and heavy spring conversion kits—with the Plush Tank, there’s simply no compromise. You get the best of both worlds, on demand.
The Plush Tank bolts on quickly and easily behind the front number plate, with no internal mods required. Constructed from CNC-machined aluminum and carbon fiber, it’s at least as tough as your bike. And you’ve also got fast and easy air-pressure setting thanks to the built-in quick-access fill hose—a nice bonus!
Once the Plush Tank is in place, you don’t need any tools or anything to make adjustments on the fly—you’re free to toggle between settings at will with the flick of a switch. If you’re looking to get the most out of your ride, this is an impressive—and affordable—way to do it. Learn more or purchase yours at kreftmoto.com/plush-tank.