WP475 (Drop-in M8)

    • Requires Adjustable Pushrods.

    • Performance Lifters Recommended.

    • Compatible with stock valve springs.

    • High Flow Air Cleaner Recommended.

    • A Full Professional Tune is Recommended for optimal performance and to ensure engine safety.

    • Critical Notes:

      • Not for VVT equipped models.

    • Compatible with Harley-Davidson 2017 to current M8 engines.

    • Excludes VVT models.

WP550 (M8)

    • Requires Adjustable Pushrods.

    • Performance Lifters Recommended.

    • Requires high-lift valve springs.

    • High Flow Air Cleaner Recommended.

    • A Full Professional Tune is Recommended for optimal performance and to ensure engine safety.

    • Critical Notes:

      • Not for VVT equipped models.

    • Compatible with Harley-Davidson 2017 to current M8 engines.

    • Excludes VVT models.

WP580 (M8)

    • Requires Adjustable Pushrods.

    • Performance Lifters Recommended.

    • Requires high-lift valve springs.

    • High Flow Air Cleaner Recommended.

    • A Full Professional Tune is Recommended for optimal performance and to ensure engine safety.

    • Critical Notes:

      • Not for VVT equipped models.

    • Compatible with Harley-Davidson 2017 to current M8 engines.

    • Excludes VVT models.

WP586-v2 (M8)

    • Requires Adjustable Pushrods.

    • Performance Lifters Recommended.

    • Requires high-lift valve springs.

    • High Flow Air Cleaner Recommended.

    • A Full Professional Tune is Recommended for optimal performance and to ensure engine safety.

    • Critical Notes:

      • Not for VVT equipped models.

    • Compatible with Harley-Davidson 2017 to current M8 engines.

    • Excludes VVT models.

WP610 (M8)

    • Requires Adjustable Pushrods.

    • Performance Lifters Recommended.

    • Requires high-lift valve springs.

    • High Flow Air Cleaner Recommended.

    • A Full Professional Tune is Recommended for optimal performance and to ensure engine safety.

    • Critical Notes:

      • Not for VVT equipped models.

    • Compatible with Harley-Davidson 2017 to current M8 engines.

    • Excludes VVT models.

WP143-S (M8)

    • Requires Adjustable Pushrods.

    • Performance Lifters Recommended.

    • Requires high-lift valve springs.

    • High Flow Air Cleaner Recommended.

    • A Full Professional Tune is Recommended for optimal performance and to ensure engine safety.

    • Critical Notes:

      • Not for VVT equipped models.

    • Compatible with Harley-Davidson 2017 to current M8 engines.

    • Excludes VVT models.

WP143 (M8)

    • Requires Adjustable Pushrods.

    • Performance Lifters Recommended.

    • Requires high-lift valve springs.

    • High Flow Air Cleaner Recommended.

    • A Full Professional Tune is Recommended for optimal performance and to ensure engine safety.

    • Critical Notes:

      • Not for VVT equipped models.

    • Compatible with Harley-Davidson 2017 to current M8 engines.

    • Excludes VVT models.