This GPM MAKS120R rear damper set is crafted to strengthen the rear suspension of the ARRMA KRATON 4X4 4S BLX while preserving low mass. Components are made from aluminum 6061 T6 to provide a solid foundation for repeated running. The package expands spring coil options for more aggressive damping choices and uses a thickened damper shaft to reduce the chance of bending. An adjustable top spring retainer offers quick tuning of spring preload to balance traction and ride comfort for varied setups.