GSC Power Division S2 Billet Performance Camshaft Kit EJ20/205 Non VVT 1999+ Engine - Fuel System_Fuel Rail Kits In 2002 they uprated this

In 2002 they uprated this parts to contain x2 bearings making the components more robust

and the advantages of the Process West Verti-Cooler design become clear

overheating

Features precision machined and computer balanced components

1 litre spec Omega pistons

GSC Power Division S2 Billet Performance Camshaft Kit EJ20/205 Non VVT 1999+ Engine - Fuel System_Fuel Rail Kits In 2002 they uprated thisGSC Power Division billet S2 camshafts for the EJ205 WRX Version 5 and 6. These cams are built to suite the high horsepower Subis. With a power range of 500 WHP and up, you need some certain mods to utilize the true potential of the S2s: built motor, with a built ported head, and a good engine management system. Upgraded valve springs are required, beehive valve springs are recommended, but not required. An upgraded single spring kit will do the job