Kajang Dispersal Link Expressway, SILK, also known as Kajang SILK Highway Kajang Dispersal Link Expressway (Malay: Sistem Lingkaran-Lebuhraya Kajang), is an expressway built to disperse and regulate the traffic flow in Kajang, Selangor, Malaysia. The 37 km (23 mi) expressway is to allow motorists to bypass the town centre of Kajang. It is also useful as the main ring road of Kajang.

Quick Facts Expressway 18, Route information ...

Expressway 18
Kajang Dispersal Link Expressway
Route information
Maintained by Sistem Lingkaran-Lebuhraya Kajang Sdn Bhd (SILK)
Length	37 km (23 mi)
Existed	2002–present
History	Completed in 2004
Component highways	Kajang Dispersal Link Expressway Main link (Mines–UPM Interchange) Kajang Dispersal Link Expressway Sungai Balak Link (Sungai Balak–Sungai Ramal Interchange)
Major junctions
Beltway around Kajang
From	Mines Interchange on Sungai Besi Expressway
Major intersections	Sungai Besi Expressway Besraya Expressway FT 3211 Jalan Balakong Cheras–Kajang Expressway Cheras–Kajang Expressway Kajang Bypass Kajang–Seremban Highway Kajang–Seremban Highway North–South Expressway Southern Route FT 1 North–South Expressway Southern Route South Klang Valley Expressway South Klang Valley Expressway
To	UPM Interchange on Sungai Besi Expressway
Location
Country	Malaysia
Primary destinations	Balakong, Bandar Sungai Long, Kajang, Semenyih, Bandar Baru Bangi, Putrajaya
Highway system
Highways in Malaysia Expressways Federal State

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The Kilometre Zero is located at Mines Interchange near Seri Kembangan.

Kajang Dispersal Link Expressway used to be called Jalan Kajang–Puchong (Jalan Sungai Chua on Kajang town side) 11 and Jalan Balakong 3211. The huge traffic jams that clogged traffic flow in Kajang town centre were the main reason behind the construction of the highway. Construction began in 2002. The expressway was completed in 2003 and began operation on 15 June 2004.^{[citation needed]}

Kajang Dispersal Link Expressway is fully lit at night and has 11 multi-level interchanges. The expressway uses the Touch 'n Go and Smart TAG electronic payment systems. The expressway has computerized traffic information display and monitoring system and 24-hour highway patrol. The expressway concessionaire offers emergency and vehicle breakdown assistance.^{[citation needed]}

The Kajang Dispersal Link Expressway uses opened toll systems. In October 2022, it was one of the four expressways maintained by PROLINTAS to have its toll rates deducted between 8% and 15%.^[1][2]