Quick view sku: AUC4587 Spring - SU (Blue) SU carburettor BLUE piston chamber spring. 2.5oz pressure. AUC4587 MSRP: Was: Now: $18.50
Quick view sku: AUC4387 Spring - SU (Red) SU carburettor RED piston chamber spring. 4.5oz pressure. AUC4387 MSRP: Was: Now: $18.50
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