Replace Norton Commando 850 Clutch Plates

Reader Contribution by The Motorcycle Classics Staff
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If you’re actually riding your old Norton Commando 850 — and we hope you are, because they’re one of the great bikes of the ’70s — chances are good that at some point you’ll have to replace the clutch plates. The original setup used five alternating bronze friction plates keyed to the center clutch hub, with four plain steel plates keyed to the outer clutch drum followed by a pressure plate and a single diaphragm-spring plate compressing the plates. It’s a fine setup, but eventually the plates wear. Slippage and overheating take a toll, as well: Once the steel plates start to blue, they’re toast, and both the steel and the bronze plates can warp from overheating.

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