dragspecialties.com All part numbers in BLUE are new for 2025. SECTION 7 WINDSHIELDS & FAIRINGS AUDIO, COMMUNICATION & MOUNTS SADDLEBAGS & LUGGAGE SEATS & SISSY BARS FUEL/AIR SYSTEMS EXHAUST TRANSMISSION & DRIVELINE ENGINE GASKETS & SEALS LIGHTING ELECTRICAL HANDLEBARS, CONTROLS & MIRRORS CABLES TANKS & OIL FILTERS BRAKES DASHES & GAUGES FENDERS & LICENSE PLATE FRAMES HARDWARE, COVERS & GENERAL FRAMES & SUSPENSION FOOTRESTS & FLOORBOARDS WHEELS & AXLES 832 See OLDBOOK For Early Model Applications DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 5-7 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. GRIND OPEN CLOSE DURATION @ 0.053” DURATION @ 0.020” VALVE LIFT LIFT TDC STOCK CARBURETOR (A) Intake 02° 38° 216° 257° 0.473” 0.072” Exhaust 36° 04° 220° 260° 0.473” 0.110” STOCK FUEL-INJECTED (B) Intake 02° 34° 216° 257° 0.473” 0.087” Exhaust 36° 04° 220° 260° 0.473” 0.110” ANDREWS “12N” Intake 02° 34° 216° 252° 0.489” 0.091” Exhaust 40° 02° 222° 259° 0.489” 0.095” ANDREWS “21N” Intake 10° 30° 220° 255° 0.498” 0.134” Exhaust 40° 08° 228° 264° 0.498” 0.121” GRIND OPEN CLOSE DURATION @ 0.053” DURATION @ 0.020” VALVE LIFT LIFT TDC ANDREWS “26N” Intake 11° 37° 226° 262° 0.490” 0.138” Exhaust 44° 04° 230° 266° 0.490” 0.120” ANDREWS “37N” Intake 18° 38° 236° 272° 0.510” 0.174” Exhaust 46° 14° 240° 276° 0.510 0.148” ANDREWS “50N” Intake 20° 48° 248° 283° 0.510” 0.184” Exhaust 54° 18° 252° 287° 0.510” 0.168” ANDREWS “55N” Intake 22° 46° 248° 283° 0.550” 0.197” Exhaust 52° 20° 252° 292° 0.550” 0.181” TWIN CAM CONVERSION CHAIN DRIVEN CAMS •Allow 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 later-style hydraulic adjusters for longer life •Cam grinds listed are designed to be used with stock lifters; they require the installation of a 07-17 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 •Made in the U.S.A. NOTE: 99-06 Twin Cam motors (except 06 Dyna) cannot use the 07-17 cams, as the bearing journal on the earlier motors is 0.875” in diameter and the 07-17 cams are 1.000” in diameter. The “N” series of cams feature the 0.875” bearing journal, yet still accept the new-style cam support plate. NOTE: 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. NOTE: Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance. FOR 99-06 TWIN CAM (EXCEPT 06 DYNA GLIDE) “12N” GRIND CAMS •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 “21N” GRIND CAMS •Bolt-in cams with more torque at low and middle rpm range (1700 to 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 “26N” GRIND CAMS •Bolt-in cams for low rpm torque and two-up touring •Add more torque and horsepower at low and middle rpm range (1800 to 5200 rpm) •Can be used with stock valve springs and tappets “37N” GRIND CAMS •Bolt-in cams for 88” or 95” motors •Smooth idle, broad torque band •Run best with low-restriction exhausts (2200 to 5800 rpm) •Can be used with stock valve springs and tappets “50N” GRIND CAMS •Designed for easy installation in 95” motors with stock heads •For lighter bikes with 9.5:1 to 9.8:1 compression ratio (2400 to 6000+ rpm) •Can be used with stock valve springs and tappets, but valve travel must be checked (minimum 0.620”) •Piston-to-valve and valve-to-valve clearance must be checked “55N” GRIND CAMS •Maximum torque and horsepower at higher rpm ranges (2600 to 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 0.620”) •Piston-to-valve and valve-to-valve clearance must be checked PART # DESCRIPTION EMIS* 0925-0146 “55N” grind cams 3 PART # DESCRIPTION EMIS* 0925-0139 “12N” grind cams 3 PART # DESCRIPTION EMIS* 0925-0140 “21N” grind cams 3 PART # DESCRIPTION EMIS* 0925-0141 “26N” grind cams 3 PART # DESCRIPTION EMIS* 0925-0143 “37N” grind cams 3 0925-0139
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