Thumpr Cam 235/257 Hydraulic Roller Cam Set for Harley-Davidson 2007-16 Twin Cam, 2006 Dyna Glide Bolt-In 103c.i.
- Gross Valve Lift: .569 In/.569 Ex
- Lobe Lift: .350 In/.350 Ex
- Duration @ .053": 235 In/257 Ex
- Valve Timing Open/Close: 20.5 In/34.5 Ex Open & 56.5In/20.5 Ex Close
- Lobe Center Line: 97 In/108 Ex
- Lobe Separation: 102.5
- Tappet Lift @ TDC: .123 In/ .116 Ex
- Valve Lift @ TDC: .200 In/.189 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 for 103c.i. engines and can be used as a bolt-in cam but benefits from performance heads and higher compression. Larger throttle body is a plus with Thumpr ™ Cams, 55mm 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. Wide power band, pulls great up to 5400 RPM.