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Choose from the vehicle applications currently listed in our catalog. Engine sizes refer to the standard engine.
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Breaker weight spring set. Standard
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The details that matter
Details
Description
With standard springs for stock advance curve, best for most OEM applications.
OEM replacement reference 32605-70 (standard strength springs).
Note: Using stronger than stock springs will give a slower advance curve and can be used to solve detonation (pinging) issues in high compression engines or poor fuel.
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.
Specifications
| Unit | 2P |
|---|
Fitment
70-99 Big Twin (Excl. TC); 71-03 XL Sportster (NU). With mechanical advanced ignition
Part numbers
| Supplier SKU | 516300 |
|---|---|
| Manufacturer part |
Specifications
| Brand | MCS |
|---|---|
| Category | Advance units and parts |
Fitment
Part numbers
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