20W-50 motorcycle oil

The 20W is the cold rating — how readily the oil pumps on a cold start — and the 50 is how thick it still is at operating temperature. Both numbers have to match what the manufacturer specified; a heavier hot number is not an upgrade.

We list 25 bottles in 20W-50 from 11 brands — Bel-Ray, Castrol, Drag Specialties Oil, K & N, Klotz, Liqui Moly, Maxima Racing Oil, Motul, Red Line, Rekluse Racing and S&S Cycle — priced $10.95 to $63.95. They run full synthetic, conventional and semi-synthetic. These ship direct from our distributor, usually 2–4 days.

By make, from our spec records: Harley Davidson 193, HARLEY 111, Triumph 12, Yamaha 8, BMW 7 and Indian 5, and 3 more.