Listed in Triumph’s parts catalogue for these motorcycles. Fitment is Triumph’s data, not a guarantee from us — add your motorcycle above and we check it against your frame number where Triumph splits the part.

Where it sits on the bike

Engine Covers

Air Cooled Scramblers · Crankcase, Engine Covers & Eng. Lubrication Syst · callout 20

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Engine Covers

Air Cooled Scramblers · Crankcase, Engine Covers & Eng. Lubrication Syst · callout 20

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Engine Covers

Speedmaster · Crankcase, Engine Covers, Lubrication System · callout 21

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Engine Covers

Speedmaster · Crankcase, Engine Covers, Lubrication System · callout 21

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Engine Covers

Thruxton · Crankcase, Engine Covers, Lubrication System · callout 20

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Engine Covers - Bonneville

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 20

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Engine Covers

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 18

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Engine Covers

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 18

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Engine Covers

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 18

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Crankcases

Rocket III · Crankcase, Engine Covers & Eng. Lubrication Syst · callout 7 · qty 2

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Crankcases

Rocket III · Crankcase, Engine Covers, Lubrication System · callout 7 · qty 2

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Prices and availability are a dated snapshot, not a reservation — Triumph supply is read from Triumph’s catalogue and our shelf count is read from our own system. Both move. Triumph supply checked Aug 5, 2026 · Brea shelf Aug 18, 2026. Shipping and tax are calculated at checkout.

Genuine Triumph parts from Southern California Motorcycles, 515 W Lambert Rd, Brea, CA 92821 · 714-256-6700