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The Camshaft Exhaust Stage 1 is part of the latest collection from Hot Cams.. Features: Stage 1 is designed for low end torque. 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.. For dual cam engine.. Mid range gain with top end gain and over rev. OE fuel mapping is acceptable, but could be fined tuned. Uses stock auto-compression mechanism. Exhaust Valve Lash: 0.250 mm.. Specifications: Application: Exhaust. Exhaust Duration: 253�. Exhaust Lift: 9.550 mm. Exhaust Lobe Centerline: 109�. Product Name: Camshaft. Type: Stage 1. Units: Each. To fit: SUZUKI LT-R 450 2X4 2006 Quadracer All Models. SUZUKI LT-R 450 2X4 2007 Quadracer All Models. SUZUKI LT-R 450 2X4 2008 Quadracer All Models. SUZUKI LT-R 450 2X4 2009 Quadracer All Models. Manufacturer part number: 2073-1E. View all Hot Cams. View all Parts and spares..