RB20-RB25DE/DET Valve Springs
KVS20-NISSAN RB20DE -DET. High performance PACALOY valve spring set to suit OEM retainers and spring base.Also fits Early RB25 heads that did not have variable valve timing. 85lb seat pressure at 36.00mm install height. Coil bind is at 22.00mm. KVS25-R-NISSAN RB25DE-DET (with NVCS). High performance valve spring set.Includes lightweight steel retainers for the intake side and replacement spring bases for the exhaust side to even up the install heights. 70lb seat pressure at 32.60mm installed height. 10.50mm maximum lift.