SLP has done it again! Providing more horse-power through combustion chamber design, these billet heads for the Patriot 850 engine deliver an impressive 6 horsepower peak with an additional 5 to 7 midrange.
They are designed to maintain compatibility with 91 octane pump fuel for optimal reliability and consistency. At the time of catalog printing they were approved for use with stock engine/pipe configuration as well as an SLP lightweight silencer and an SLP intake kit (SLP Stage 1.5) with no fuel management changes required. Other combinations may require additional fuel management and/or higher octane, please inquire.

Starting Line Products 2019-20 Axys 850 Power Dome Billet Heads

  • All items are shipped via USPS. Expedited shipping may be available upon request - please email us at

    Please allow approximately 15 days for international deliveries.

PO BOX 625 | Buena Vista, CO | 81211

719.395.6727  |

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Created by :  Ryan McConnell