Speedo Seats & Luggage- racks Frame Chassis Suspension Forktubes Wheels Brake Fenders Gastanks Motorparts Gaskets Intake Transmission & Driveline Exhaust Electrical & Lights Handlebars, Cables & Mirrors Oil tanks Oil & Chemicals Fasteners Windshields Forward controls, Footpegs Miscellaneous MOTOR PARTS - LOWER END 10 610 NEW PRODUCTS ADDED WEEKLY AT / MOTORCYCLESTOREHOUSE.COM ANDREWS, TWIN CAM CHAIN DRIVE CAMS Chain driven camshafts. Comes with splined camshafts for use with splined (00-17 style) driven gear. For 1999 Twin Cams splined 503575 driven gear must be purchased separately. Can be used with stock hydraulic lifters. 21 / .498" LIFT Bolt-in. More torque for allround riding. 88-96 inch and std CR, stock pistons and heavy bikes. Works well with both carb and injection. Stock springs OK. 1700-4800 RPM. 503691 TW21. 99-06 Twin Cam (excl. 2006 Dyna) 503661 21H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 26 / .490" LIFT Bolt-in. 96-103 inch with stock compression ratio. Great for two-up touring, this cam will add torque and HP at lower and middle RPM ranges. Stock springs OK. (1800–5200 RPM). 540120 TW26A. 99-06 Twin Cam (excl. 2006 Dyna) 503662 26H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 31 / .510" LIFT Great cam for motors with 95/96 inches and 9.8 to 10.2 CR. Lower TDC lift for easy installation. Similar to TW37 with timing setup for higher compression. Stock springs OK. (2400–5600 RPM). 540121 TW31S. 99-06 Twin Cam (excl. 2006 Dyna) 503663 31H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 32 / .570" LIFT High lift version of the 31H cam. Much more power through the RPM range with 10:1+ CR. Use high-lift springs. 2800-5600 RPM. 503669 32H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 37 / .510" LIFT Hot street cam for 88 to 96 inch. Twin Cam 88's have shown 80+ horsepower on rear wheel, more available with with 95/96 incher. Smooth idle, broad torque band. Runs best with low restriction exhaust. Stock springs OK. 2200-5600 RPM. 503693 TW37B. 99-06 Twin Cam (excl. 2006 Dyna) 503664 37H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 48 / .548" LIFT For 96-103 inch stock engines. Broad tip cams for Touring models. Max torque at low and mid RPM from 2500-5500. Stock springs OK. 503773 48H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 50 / .510" LIFT 95/96 inch engines. 9.5 to 9.8 CR with stock heads. Torque and horsepower at mid to high RPM. Stock springs OK. 2400-6000 RPM. 540122 TW50 99-06 Twin Cam (excl. 2006 Dyna) 503666 50H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 54 / .555" LIFT For 95 to 103 inch engines. Up to 10:1 CR. Use high-lift springs. 2200-5600 RPM. 503724 TW54. 99-06 Twin Cam (excl. 2006 Dyna) 503744 54H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 55 / .550" LIFT 88-103 inch engines. 9.8 to 10.2 CR. Maximum torque and horsepower at higher RPM ranges. Use high-lift springs. 2600-6200 RPM. 503696 TW55. 99-06 Twin Cam (excl. 2006 Dyna) 503667 55H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 57 / .560" LIFT Bolt-in. With broad tip cams for 96-103 and 110" CVO engines. Max torque between 2200-5600 RPM. Stock springs OK. 503774 57H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 60 / .560" LIFT For well prepped 95-103 inchers with 10.2 to 10.5 CR and head work. 100+ horsepower is within reach. Modified exhaust pipes. Use high-lift springs. 27006500+ RPM. 540123 TW60A. 99-06 Twin Cam (excl. 2006 Dyna) 503668 60H. 06-17 Dyna; 07-17 Softail; 07-16 Touring 540122 99-17 TWIN CAM, DRIVEN GEARS 34T, CAMSHAFT Replacement cam driven gears for 99-17 Twin Cam models. The Andrews 503576 gear is an improved design over the, no longer available, OEM gear for 1999 Twin Cam models only. The OEM design is poor design quality and prone to broken woodruff keys, when this happens both cams (and complete valve train) will stop in the still running engine. The Andrews gear and spacer is made as a one-piece design from a 4 times stronger material than the OEM gear. This one-piece design enables the use of a full length .350" longer woodruff key, which is much stronger. Note: In all applications, but especially in high performance, it is recommended to use the Andrews 503576 gear for 1999 Twin Cam A models. 99-17 Twin Cam Cam driven gear, 34t. 503576 1999 TCA. 34T Andrews, with keyway. Repl. 25563-99 503575 00-06 TCB; 00-03 TCA; 2005 Dyna. Andrews, splined. Repl. 25716-99 921615 06-17 Dyna; 07-17 Softail; 07-16 Touring. Repl. 25728-06 Cam drive gear, 17t. 503587 99-06 Twin Cam (excl. 2006 Dyna) Andrews. Repl. 25609-99 921614 06-17 Dyna; 07-21 Softail; 07-21 Touring. Feuling. Repl. 25673-06 06-17 Dyna; 07-17 Softail; 07-16 Touring Chain driven gear (on cam) +4° or -4° cam timing Used with chain driven camshafts. Enables your to offset the camshaft timing 4 degrees. +4° for more torque or -4° for less dynamic compression. 503422 06-17 Dyna; 07-17 Softail; 07-16 Touring Camshaft installation kit Used with chain drive cams only. S&S Andrews 503593 -- 99-06 TCA/B (excl. 2006 Dyna) 531691 503421 06-17 Dyna; 07-17 Softail; 07-16 Touring 503576 503422 503421 CHAIN-DRIVE 99-06 and 06-17 Twin Cam TWIN CAM ANDREWS CAMSHAFT SPECIFICATION CHART Intake° Exhaust° Duration° Valve Lift Valve Lift TDC Open/Close Open/Close In/Ex In/Ex In/Ex 21 10/30 40/08 220/228 .498" .134"/.121" 26 11/35 41/09 226/230 .490" .138"/.112" 31 10/46 52/08 236/240 .510" .131"/.120" 32 10/46 52/08 236/240 .570" .131"/.120" 37 18/38 46/14 236/240 .510" .174"/.148" 44 21/41 49/17 242/246 .495" .182"/.158" 48 13/29 43/15 222/238 .548" .153"/.163" 50 20/48 54/18 248/252 .510" .184"/.168" 54 16/42 43/15 238/238 .555" .165"/.158" 55 22/46 52/20 248/252 .550" .197"/.181" 57 24/56 46/14 260/260 .570" .184"/.153" 60 24/56 58/22 260/260 .560" .205"/.205" Timing and duration measured at zero lash and .053" tappet lift off base circle. To avoid coil bind, allow min. .030" more free valve travel than the max. valve lift that is mentioned. To achieve adequate valve spring clearance, several higher lift top collars are available which require no machining. 99-17 TWIN CAM
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