The CORE ACE damper will generally be an emulsion damper in most installations where short dampers are required. Generally, anything under 450mm long with an average stroke will be of this type. If it's just a short-stroke we may be able to accommodate a damper with a separation piston.
We prefer the ACE+ damper where a short damper is required to fit the vehicle. As the DDA valve takes up space on the damper shaft. The ACE+ damper includes a remote canister to house the gas reservoir and separating piston. A little more installation time but a better end product and performance. No access is needed to this canister for any type of adjustment.
Finally, the R-ACE damper has a remote canister for the gas reservoir but this also houses High and Low speed compression adjustment for additional range.
The heart of the Semi Active product line is the DDA valve. It is the fastest, most stable bi-directional internal damping valve in the world. The DDA valve can respond to commands from the controller in only six milliseconds, or up to 60 times in the blink of an eye! (comparable valve designs respond in 80-100 milliseconds). Unlike other electronic solenoid valves, the DDA valve can also respond to mid-stroke commands, allowing for even more instantaneous damping performance. By utilizing a traditional shim stack arrangement in their electronic solenoid valve design, CORE semi active dampers are able to repeatedly and consistently produce the “ideal” damping curve for a variety of applications.
The mechanical build also sets the CORE Suspension DDA line apart from similar dampers on the market. CORE Suspension’s proprietary guide seal design features a .01mm guide clearance – the finest in the industry. This incredibly precise guide seal clearance provides CORE DDA products with the lowest stiction in the industry. This precision, combined with the placement and position of the DDA valve, makes the DDA valve impervious to sideload even during the most severe mechanical conditions.
All CORE products are subject to extreme scrutiny during quality-control tests and simulations in accordance with BMW automotive standards before receiving the green light for production. Each DDA valve design is subjected to 17.6 million cycles on a shock dyno and must retain 85% of original damping performance before being approved for production. It is not without reason that TracTive Suspension is the preferred choice of the experienced long-distance motorbike adventure rider or the low-temperature snowmobile crosser. The DDA valve is tested at temperatures as low as -30°C and as high as 140°C before production. Any technology that survives in these harsh conditions, has a field day in car racing.