4G63 VR4 EVO 1-3 Camshafts 1-TX272-L272 272 10. 00mm 10. 00mm Valve Lift 272 cam designed to work with OEM valve springs. Rough idle note with exhaust upgrade. Increase in mid high rpm power with upgraded turbo. Upgraded turbo size range 48 58mm compressor inducer. For high mileage engines Kelford Cams recommend valve spring KVS63 which uses the OEM retainer.
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