HKS SLD Speed Limit Defence Type 1

The HKS SLD is an electronic device designed to eliminate a vehicle’s factory speed limiter. When competing on the drag strip or a circuit track, the factory speed limiter can hinder a vehicle’s performance. The HKS SLD is available in two versions: Type-1 is generally for vehicles equipped with a manual transmission and Type-2 is generally for vehicles with automatic transmissions. Please contact for vehicle compatibility if uncertain.

Manual transmission japanese vehicles (not suited for Z33 RX8 models)

If you are unsure please contact us with your vehicle make, model type, engine code and registration date so we can check for you. Please ensure that you give us as much information as possible so we can assist you.

Mazda RX-7 FD3S Model 13B-REW Engine

Mitsubishi GTO/3000GT Z16A Model 6G72 Engine - Oct 1990 to July 2000

Mitsubishi Evo Series 1 to 8 inclusive

Mitsubishi Galant/Legnum VR4 4G63 Engine E39A Model - Oct 1987 to April 1992

Nissan 200SX/Silvia SR20DE(T) CA18DE(T)

Nissan 300ZX (Z32)

Nissan Skyline GT-R

Nissan Skyline GT-S/T

Nissan Sunny/Pulsar GTi-R

Subaru Impreza (GC8)

Subaru Impreza (GDB)

Toyota Supra JZA80 Model 2JZ-GTE Engine - May 1993 onwards (Manual Transmission)

Toyota Supra JZA70 Model 1JZ-GTE Engine - Aug 1990 to April 1993

Toyota Supra MA70 Model 7M-GTE Engine - Feb 1986 to July 1990

Toyota MR2 SW20 Model 3S-G(T) E Engine - Oct 1989 to Sep 1999