Ignition heavy advance weight springs are for slightly modif ied stock low compression or mild stroker application.
Heavy advanced weight springs will help cure minor idle problems and features a silver finish. Sold as a pair.
Fits:
FL 1970-1978
Fx 1971-1978
XL 1970-1978
UOM: SET
Country Of Origin: USA
Accessory Items:
16-0715 – Clean Time Tool
32-7787 – Dyna Ignition Booster For Single Point