Expressway 4
Route information
Part of AH140 AH2
Maintained by Rangkaian Lekas Berhad (RLB)
Length	91.0 km (56.5 mi)
Major junctions
North end	Sungai Petani (North) Interchange
South end	Bandar Baharu Interchange
Location
Country	Malaysia
Primary destinations	Sungai Petani Padang Serai Kulim Serdang Bandar Baharu
Highway system
Highways in Malaysia Expressways Federal State

South Kedah Expressway (Lekas), or Sungai Petani–Kedah Inner Expressway (SPIKE) South Kedah Expressway, is a new expressway under planning in Kedah, Malaysia. "Lekas" stands for "Lebuhraya Kedah Selatan". The South Kedah Expressway is much similar to the North–South Expressway Central Link E6 (Shah Alam–Nilai North) in the Klang Valley. It will act as a bypass from the state of Penang.

List of interchanges

Km	Exit	Interchange	To	Remarks
	170	Sungai Petani North Interchange	West From/to Interchange FT 1 Sungai Petani FT 1 Sungai Lalang FT 67 Baling K1 Merbok Lembah Bujang From/to expressways North–South Expressway Northern Route AH2 North–South Expressway Northern Route North Bukit Kayu Hitam Alor Star Gurun South Penang Butterworth Bertam	Trumpet interchange
	401	Ambangan Interchange	FT 225 Jalan Lencongan Timur Ambangan	Trumpet interchange
	402	Padang Buloh Interchange	FT 67 Padang Buloh FT 67 Baling	Trumpet interchange
	403	Lubuk Klab Interchange	WEST South Kedah ExpresswayPinang Tunggal Link FT 225 Pinang Tunggal	Trumpet interchange
		Sungai Muda bridge
	404	Padang Serai Interchange	FT 136 Padang Serai	Trumpet interchange
	405	Kulim North Interchange	West South Kedah Expressway Lekas – BKE Link Butterworth–Kulim Expressway/ Butterworth Outer Ring Road AH140Butterworth–Kulim Expressway Butterworth Baling Gerik	Trumpet interchange
	406	Kulim Sentral Interchange	P14 Kulim P14 Butterworth	Trumpet interchange
	407	Kulim South Interchange	FT 136 Kulim	Trumpet interchange
	408	Terap Interchange	FT 136 Terap	Trumpet interchange
	409	Serdang Interchange	Southest South Kedah Expressway AH140 AH2 Lekas – Jelas Link North–South Expressway Northern Route Jelas Expressway Lebuhraya Utara–Selatan Lingkaran Tengah/ Serdang Selama Taiping Kuala Kangsar	Trumpet interchange
	410 153	Bandar Baharu Interchange	East From/to Interchange FT 136 Bandar Baharu FT 136 Parit Buntar FT 136 Serdang From/to expressways North–South Expressway Northern Route AH2 North–South Expressway Northern Route North Penang Butterworth Jawi South Kuala Lumpur Ipoh Alor Pongsu	Trumpet interchange