FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 543 Series 1021

If you're looking for measurable power gains without sacrificing the smooth, streetable characteristics of your Harley, the Feuling 543 Series Reaper delivers. This cam outperforms the 525 in peak output while preserving low-end torque and maintaining a quiet, refined valve train—ideal for riders who want real performance without constant valve clatter. It's an easy bolt-in upgrade that responds immediately to throttle input and pairs perfectly with mid-level engine builds.

The Reaper's 1900–6000 RPM power band keeps you in the meat of the curve during real-world riding, while improved fuel economy and cold-start characteristics make daily operation effortless. Whether you're running stock displacement or pushing toward 103 cubic inches, this cam scales with your build without requiring a complete valvetrain overhaul.

• Manufacturer: Feuling Oil Pump Corp.
• Part Number: 1021
• Fitment: Universal S&S 96" and 103" Harley engines; compatible with 88" and 96" applications
• Design: Smooth cam lobe profile
• Installation: Bolt-on camshaft
• Power Range: 1900–6000 RPM
• Torque Character: Maintains low-end output
• Valve Train: Quiet operation
• Starting: Easy cold-start
• Throttle Response: Improved
• Fuel Economy: Enhanced
• Compression Ratio: Responsive to increased ratios
• Required Accessories: Performance valve springs (99–04 models)
• Recommended Accessories: Performance pushrods and lifters
• Complementary Upgrades: Performance exhaust, high-flow air cleaner