U.S. Pat. No. 11,920,670
The Trask CheckM8 Vented Transmission Top Cover – the ultimate solution to the common problems faced by Harley-Davidson M8 engines. Free up your engine with this upgrade designed to address excessive oil consum...
Reviews
5.0
22 ratings
5
4
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1
A shiny part on the outside, an upgrade to the OEM on the inside 👍
J
James · July 20, 2026
Bought to vent crackcase pressure
M
Mike · July 16, 2026
Does what it says it is designed for. Very happy customer. Although it could have had 6 bolts included in the package rather than just 4.