TRASK PERFORMANCE CheckM8™ vented transmission top cover fixes the excessive crankcase breather pressure issue on Harley-Davidson M8 engines.

• Reduce or even eliminate the oil coming from the head breathers on your M8.
• Machined from Billet Aluminum with a Boyesen one-way reed valve to vent the excessive crankcase pressure.
• No annoying hose on your dipstick to worry about when checking your oil.
• Proven on the Trask Performance King of the Baggers Race Bike.
• Free up horsepower on M8 engines by allowing to rev easier.