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J and P Cycles
J&P Cycles, Inc. was founded by John and Jill Parham in 1979. It sells motorcycle components, apparel, and gear for the American V-twin motorcycle rider.
Detail
Reaper 543 cam requires performance valve springs, see 723-530 or 433-989 Performance lifters recommended but not required. Will work with factory pushrods on engines with factory stack up, if deck height, cylinders or rocker boxes have been modified from stock then adjustable pushrods are required, see 246-969, 433-980, 433-981. Increased compression, cylinder head work and performance exhaust recommended but not required, increased compression is required for bottom end performance. RPM range 2,200 - 5,950. Grind: 543 Intake: .543 Valve Lift, 15 Open, 43 Close, 238 Duration @ .053, .160 lift @ TDC, .104 Lobe Centerline Exhaust : .553 Valve Lift, 56 Open, 12 Close, 248 Duration @ 053, .140 lift @ TDC, 112 Lobe Centerline