Thumpr Cam 243/257 Hydraulic Roller Cam Set for Harley-Davidson 2007-16 Twin Cam, 2006 Dyna Glide Bolt-In 110-117c.i.
- Gross Valve Lift: .569 In/.569 Ex
- Lobe Lift: .350 In/.350 Ex
- Duration @ .053": 243 In/257 Ex
- Valve Timing Open/Close: 24 In/39 Ex Open & 57 In/20 Ex Close
- Lobe Center Line: 97.5 In/108.5 Ex
- Lobe Separation: 103
- Tappet Lift @ TDC: .123 In/ .123 Ex
- Valve Lift @ TDC: .200 In/.200 Ex Thumpr ™ Cams make a bold statement at stop lights and around the neighborhood with the radical sound of a hard hitting, thumping, high performance idle. Designed as a bolt-in for 110c.i.-117c.i. engines but really shines with performance heads and higher compression. Can be used as a bolt-in cam for 103c.i. engines but higher compression is needed. Larger throttle body is a plus with Thumpr ™ Cams, 58mm and up show big gains in acceleration and throttle response. Sophisticated “Endurance Ramp” lobe design makes great power but is easy on the tappets and valve train for long life. Very wide power band, pulls great up to 6000 RPM.