The S&S Cycle HPT542 Chain Drive Camshaft Kit delivers a significant power upgrade for your M8 engine, providing the aggressive idle sound and performance you crave. Engineered for a broad torque band and high-RPM horsepower, this bolt-in camshaft transforms your riding experience.
Description
The S&S Cycle HPT542 Chain Drive Camshaft Kit is specifically engineered to unlock the full potential of your M8 engine, offering a substantial boost in power and an exhilarating riding feel. This high-performance camshaft is a true bolt-in solution for Gen 2 M8 engines equipped with oval port heads (117 and 121 non-VVT), ensuring straightforward installation. With an impressive 0.542″ lift, the HPT542 cam provides a powerful pull across a wide RPM range, from 2000 to 6200 RPM, translating into outstanding throttle response and a streetable yet aggressive lope at idle. Riders will appreciate the mile-wide torque band and robust high-RPM horsepower, making every twist of the throttle a thrilling experience. Designed, tested, and manufactured in-house at S&S Cycle’s Viola, Wisconsin facility, this camshaft embodies real American expertise and quality, ensuring reliable, real-world performance. It’s also compatible with Gen 1 M8 engines when paired with S&S 0.605″ lift springs, offering excellent results, especially with a mild port job. The HPT542 cam is optimized for compression ratios up to 11.7:1, making it a versatile motorcycle cam kit for serious enthusiasts looking for a significant M8 camshaft upgrade.
Features & Highlights
- Unleash Significant Power: Specifically designed to deliver a substantial boost in both torque and high-RPM horsepower, transforming your M8 engine’s performance.
- Aggressive Sound and Feel: Experience the sought-after aggressive idle lope and outstanding throttle response that signifies a true performance upgrade.
- Optimized for M8 Engines: A direct bolt-in fit for Gen 2 M8 engines with oval port heads (117 & 121 non-VVT), and compatible with Gen 1 M8 engines using S&S 0.605″ lift springs.
- Wide Powerband: Provides a strong, consistent pull from 2000 RPM all the way up to 6200 RPM, offering a versatile and exhilarating power delivery.
- Superior Engineering: Proudly designed, tested, and manufactured in-house in Viola, Wisconsin, ensuring top-tier American quality and camshaft expertise.
- High Compression Compatibility: Performs exceptionally well with compression ratios up to 11.7:1, maximizing engine efficiency and power output.
Technical Specifications
- Brand: S&S Cycle
- Model: HPT542
- Product Type: Chain Drive Camshaft Kit
- Lift: 0.542″
- Intake Duration: 223°
- Exhaust Duration: 259°
- Intake Closes: 30°
- RPM Range: 2000 – 6200 RPM
- Compression Compatibility: Up to 11.7:1
- Fitment: Bolt-in for Gen 2 M8 engines (117 & 121 non-VVT with oval port heads)
- Alternate Fitment: Compatible with Gen 1 M8 engines using S&S 0.605″ lift springs
- EAN: 09251710
Important to Know
- Requires S&S 0.605″ lift springs for Gen 1 M8 engine compatibility.






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