Exhaust. Excellent mid-range and top-end power increase when installed at factory pre-set 105 degrees. Centerline (factory setting). Uses stock valve springs. Works best with 95 mm bore (426cc) or larger. Includes auto-decompressor. | Exhaust Lift: 8.76 mm | Exhaust Duration (@ 1 MM): 259

• Stage 1 is designed for low end torque
• For dual cam engine.
• Adds a 5%-10% power gain
• Designed and dyno proven in the USA
• Manufactured by utilizing state of the art valvetrain software
• CNC machined from 8620 billet, case-hardened steel for an exact fit and lobe profile
• Engineered to be drop-in cams, that use stock valve springs (unless otherwise noted).
• Select cams feature Hot Cams Improved Throttle Design (ITR) technology; these cams improve throttle response throughout the entire rpm range while providing excellent power gains through the mid-range and top-end.