Wood PerformanceBW-4V Series Valve Springs

Wood Performance's BW-4V valve springs and titanium retainers are matched to their highest-lift Knight Prowler cams and explicitly named as required equipment on several of their Milwaukee-Eight grinds. Sold in 4 spring-rate configurations (W160-PSW-10L, W188-1200-10L, W200-1200-10L, BW-4V). Captured on a follow-up pass after this batch was first delivered without them - flagged as a companion part in the original delivery's open_questions but not actually captured, which was a real gap: 8 of the 13 M8 cams in this same batch explicitly require this exact named part, so it belongs in the same batch, not a separate one.