Stage 1 camshafts optimized for low‑rpm torque and a 5–10% power gain. Designed and dyno‑tested in the United States, CNC‑machined from hardened 8620 billet steel for a precise fit. Drop‑in installation with stock springs (unless otherwise noted). Some ITR versions improve throttle response and mid/high‑range performance. For dual overhead cam (DOHC) engines.
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