HKS Speed Limit Defencer - SLD Type II Deatschwerks The HKB boss kits are

The HKB boss kits are a cost effective

the intercooler acts as a large heat exchanger that dissipates the heat generated by the compression of the intake charge without creating reductions in boost pressure or response

Core end tanks have been designed to flow the compressed air evenly across the whole intercooler core

and provide the maximum output under engine acceleration

HKS Speed Limit Defencer - SLD Type II Deatschwerks The HKB boss kits areMost of JDM vehicles are equipped with speed limiter function. With this function, the vehicle's speed cannot exceed 180km h. On the other hand, the performance of JDM vehicles is improved; even non sports models are capable of driving over 180km h.HKS SLD can eliminate the factory speed limiter to drive over 180km h and bring out full performance of the vehicle.