Drag Specialties

Features

• Allows you to upgrade your 99-06 Twin Cam (except 06 Dyna Glide) to the newer roller-style cam chains and replaces the spring tension cam chain adjusters with the laterstyle hydraulic adjusters for longer life.
• Cam grinds listed are designed to be used with stock lifters. They require the installation of a 2007 cam plate, oil pump, cam sprockets and chains, and both hydraulic chain adjusters. These parts are not included and must be purchased separately. A list of required components is supplied with each set of cams
• Performance should be similar to earlier bikes with the same cam grinds
• Bolt-in cams with the same output as the stock cams
• Slight power increase when compared to stock
• No retuning of the stock system is necessary
• Can be used with stock valve springs and tappets
• Bolt-in cams with more torque at low and middle rpm range (1700-4800 rpm)
• Similar to EV23 for heavy bikes
• Ideal for heavy bikes with stock compression ratios and stock pistons
• Can be used with stock valve springs and tappets
• Bolt-in cams for low rpm torque and two-up touring
• Add more torque and horsepower at low and middle rpm range (1800-5200 rpm)
• Can be used with stock valve springs and tappets
• Great cams for motors with 95 inches and 9.8 to 10.2 compression ratio
• Lower TDC lift for easy installation
• Similar to TW37 with different timing (2000-5600 rpm power range)
• Can be used with stock springs and tappets
• Bolt-in cams for 88” or 95” motors
• Smooth idle, broad torque band
• Run best with low-restriction exhausts (2200-5800 rpm)
• Can be used with stock valve springs and tappets
• Bolt-in cams for 88+” and 9.5:1 to 10.2:1 compression ratio
• Maximum torque and horsepower at middle and upper rpm range (2300-5800+ rpm)
• Can be used with stock valve springs and tappets
• Designed for easy installation in 95 inch motors with stock heads
• For lighter bikes with 9.5 to 9.8 compression ratio (2400-6000+ rpm)
• Can be used with stock valve springs and tappets, but valve travel must be checked (minimum .620”)
• Piston-to-valve and valve-to-valve clearance must be checked
• Maximum torque and horsepower at higher rpm ranges (2600-6200+ rpm)
• Designed for engines with 9.8:1 to 10.2:1 compression ratio
• Coil bind should be checked; can be used with stock tappets (minimum valve travel of .620”)
• Piston-to-valve and valve-to-valve clearance must be checked

Images

Descriptions and notes

For 99-06 Twin Cam (Except 0-6 Dyna Glide).

99-06 Twin Cam motors (except 06 Dyna Glide) cannot use the 2007 cams, as the bearing journal on the earlier motors is .875” in diameter and the 2007 cams are 1.000” in diameter. The “N” series of cams feature the .875” bearing journal, yet still accept the new style cam support plate. 99-01 model motors must use the Andrews rear cam sprocket Drag PART #0925-0147, 2002-2006 models must use the stock rear cam sprocket, OEM # 25728-06. Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.