Motorcycle Storehouse Breaker Weight Spring Set. Standard for 70-99 Big Twin(Excl. TC); 71-03 XL . With Mechanical Advanced Ignition
Standard replacement for stock OEM applications. Replaces 32605-70. Note: Using stronger than stock springs will give a slower advance curve and can be used to solve detonation issues. Note: 516300 is standard replacement, 516301 is heavy duty, 516598 is extreme duty. Mixing different spring strengths will give additional fine-tuning options. Note: Stronger than stock springs may require carburetor adjustment.
70-99 B.T.(excl. TC); 71-03 XL . With mechanical advanced ignition
Unit of Measure 2P