| Product Line | Thumpr |
| Advertised Intake Duration | 283 |
| Advertised Exhaust Duration | 303 |
| Intake Lift | 0.563 in |
| Lobe Separation Angle | 109 Degrees |
| Operating Range RPM Upper | 6600 RPM |
| Material | Billet Steel |
| Finish | Natural |
| Note | Hydraulic Roller - Mutha' Thumpr |
| Camshaft Lifter Style | Hydraulic Roller Tappet |
| Intake Duration at 0.050 in | 227 |
| Exhaust Duration at 0.050 in | 241 |
| Exhaust Lift | 0.546 in |
| Operating Range RPM Lower | 2300 RPM |
| Manufacturer Grind Number | 283THR9 |
| Color | Natural |
| Quantity | Each |
| Package Weight | 10.35 lbs (4.69 kg) |
| Package Width | 3 in (7.62 cm) |
| Package Length | 24.65 in (62.61 cm) |
| Package Height | 3 in (7.62 cm) |
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