but with delayed timing to help eliminate 'pinging'

82-03 XL Sportster

045" blue PTFE coated head &

CORROSIVE RESISTANT ALLOY

Fits: > 65-78 B

ANDREWS TC CAMS, TW21 / .498 INCH Original Skruv/muttrar but with delayed timing to. 498" valve lift. Set includes two chain driven camshafts. A cam drive installation kit, that includes a gear cover gasket, cam bearings and retaining ring can be ordered separately as S&S 503593. Cams can be run with stock hydraulic lifters. Note: Owners of 1999 Twin Cams must separately purchase the splined 00 06 style driven gear (503575 Andrews). 00 06 models can re use stock 34 tooth driven gear. Note: When using 99 06 chain drive cams for