Clutch The KTM 250 EXC-F employs the KTM-developed DDS clutch (damped diaphragm steel) with a wear-free steel basket and extremely heat resistant clutch plates and new, nitrated steel liners. This clever design employs a diaphragm spring instead of the usual coil springs, making for considerably easier clutch action.
The difference between active and passive solar water heating systems is that active systems have circulating pumps and controls, while passive systems do not. Although passive systems are usually not as expensive as active systems and can last longer, they are generally less eficient.
Solar Hot Tub Heaters keep the water in your hot tub hot without harming the environment or adding to your electric bill. Anyone who owns a hot tub knows how expensive it can get to use the electricity it takes to keep the water hot. Adding a Solar Hot Tub Heater will cut down on that cost.