
The SPEC Stage 3+ single-plate clutch kit for 1963–1969 Plymouth Belvedere with a 426ci engine is built to handle high torque loads while remaining a single-disc solution. It increases clutch holding capacity for heavy-duty or modified engines and is intended as a drop-in upgrade for classic Mopar applications requiring stronger engagement under load.
Spec 1963-1969 Plymouth Belvedere 426ci Stage 3+ Clutch Kit