Our 12PK LSA FEAD is designed to fit the standard ATI balancer available for LSA engines and can be supplied with two crank pulley options (Ø205 and Ø254), as well as a range of supercharger drive pulleys (Ø90-Ø70) to provide a progressive increase in supercharger RPM - refer to tech guide for more information.
Due to the limited belt lengths available the upgraded 12PK drive system must use the newly designed Harrop tensioner manufactured from billet 6061 aluminium. The Harrop LSA style Tensioner has 10deg more radial travel than the OEM tensioner providing more flexibility with belt lengths and is also fitted with a heavier spring providing up to a 40% greater load at full travel. The new Harrop LSA style Tensioner is ideal for our 10PK and 12PK FEAD systems minimising belt slip but can still be used with the OEM 8PK system.
Harrop LSA Style Tensioner and Pulley
3 Idler Mount
Crank Pulley available in Ø205 and Ø254
Supercharger Drive Pulley available in Ø90-Ø70
Supercharger Belt available in 1727 or 1831 length