
FEULING OIL PUMP CORP. Race Series® Oil System Packs For M8
In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
We accept many payment methods

In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
Enhance the performance of your Harley-Davidson M8 engine with the Race Series® Oil System Packs. Designed for serious riders, these packs include a FUELING® High Flow billet camplate made from 7075 aluminum, which is 50% harder and stronger than factory or FUELING® OE+ camplates. This upgrade increases oil flow and volume by optimizing the oil pump reservoirs and critical passages.
With bench-tested FUELING® oil pumps, you can expect a minimum relief valve seating of 30 psi, with full pop-off at 55-60 psi. The combination of larger gears and properly sized passages ensures essential oil system function, eliminating common pressure and scavenge issues.
Experience quieter engine operation, increased oil pressure, and enhanced scavenge volume—42% more scavenge volume and 68% more oil volume directed to the crankshaft and connecting rod bearings. Engine temperatures run 15°-25° cooler while oil temperatures run 15°-30° cooler.
Gain 2 horsepower and 2 ft./lb. of torque at the rear wheel, with added features like full-travel or short-travel hydraulic roller lifters, ensuring your engine can handle heavy spring pressures without compromising performance. All components are made in the USA.
We ship to:
We do not ship to the Canary Islands, Ceuta, or Melilla.
Shipping costs are calculated automatically at checkout based on destination and weight.
Free shipping may be offered for qualifying orders, as specified on our website.
Orders are processed within 1–2 business days after payment confirmation. Orders placed on weekends or public holidays are processed the next business day.
If your order is delayed or arrives damaged, you must notify us within 14 calendar days. We will investigate the issue and offer a resolution in accordance with applicable consumer protection laws.
In accordance with Royal Legislative Decree 1/2007 (Ley de Defensa de los Consumidores y Usuarios), you have the right to withdraw from your purchase within 14 calendar days from the date of receipt, without giving any reason.
To exercise this right, contact us via email or through our website, providing your order number and contact details.
If you want to return an item, please contact us first to give you detailed instructions.